diff options
Diffstat (limited to 'apps')
-rw-r--r-- | apps/codecs/Makefile | 1 | ||||
-rw-r--r-- | apps/codecs/SOURCES | 1 | ||||
-rw-r--r-- | apps/codecs/nsf.c | 4513 | ||||
-rw-r--r-- | apps/metadata.c | 11 | ||||
-rw-r--r-- | apps/tree.c | 2 |
5 files changed, 4528 insertions, 0 deletions
diff --git a/apps/codecs/Makefile b/apps/codecs/Makefile index 56e56403fd..f491a5be7f 100644 --- a/apps/codecs/Makefile +++ b/apps/codecs/Makefile | |||
@@ -51,6 +51,7 @@ $(BUILDDIR)/%.a : % $(CODECDEPS) | |||
51 | $(OBJDIR)/wav.elf : $(OBJDIR)/wav.o | 51 | $(OBJDIR)/wav.elf : $(OBJDIR)/wav.o |
52 | $(OBJDIR)/sid.elf : $(OBJDIR)/sid.o | 52 | $(OBJDIR)/sid.elf : $(OBJDIR)/sid.o |
53 | $(OBJDIR)/adx.elf : $(OBJDIR)/adx.o | 53 | $(OBJDIR)/adx.elf : $(OBJDIR)/adx.o |
54 | $(OBJDIR)/nsf.elf : $(OBJDIR)/nsf.o | ||
54 | $(OBJDIR)/aiff.elf : $(OBJDIR)/aiff.o | 55 | $(OBJDIR)/aiff.elf : $(OBJDIR)/aiff.o |
55 | $(OBJDIR)/mpa.elf : $(OBJDIR)/mpa.o $(BUILDDIR)/libmad.a | 56 | $(OBJDIR)/mpa.elf : $(OBJDIR)/mpa.o $(BUILDDIR)/libmad.a |
56 | $(OBJDIR)/a52.elf : $(OBJDIR)/a52.o $(BUILDDIR)/liba52.a | 57 | $(OBJDIR)/a52.elf : $(OBJDIR)/a52.o $(BUILDDIR)/liba52.a |
diff --git a/apps/codecs/SOURCES b/apps/codecs/SOURCES index 68bb04f926..51ccd2a2b6 100644 --- a/apps/codecs/SOURCES +++ b/apps/codecs/SOURCES | |||
@@ -15,6 +15,7 @@ shorten.c | |||
15 | aiff.c | 15 | aiff.c |
16 | sid.c | 16 | sid.c |
17 | adx.c | 17 | adx.c |
18 | nsf.c | ||
18 | #if defined(HAVE_RECORDING) && !defined(SIMULATOR) | 19 | #if defined(HAVE_RECORDING) && !defined(SIMULATOR) |
19 | /* encoders */ | 20 | /* encoders */ |
20 | aiff_enc.c | 21 | aiff_enc.c |
diff --git a/apps/codecs/nsf.c b/apps/codecs/nsf.c new file mode 100644 index 0000000000..8ea7047177 --- /dev/null +++ b/apps/codecs/nsf.c | |||
@@ -0,0 +1,4513 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * | ||
9 | * Copyright (C) 2006 Adam Gashlin (hcs) | ||
10 | * Copyright (C) 2004 Disch | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | |||
20 | /* | ||
21 | * This is a perversion of Disch's excellent NotSoFatso. | ||
22 | */ | ||
23 | |||
24 | #include "codeclib.h" | ||
25 | #include "inttypes.h" | ||
26 | #include "system.h" | ||
27 | |||
28 | CODEC_HEADER | ||
29 | |||
30 | /* arm doesn't benefit from IRAM? */ | ||
31 | #ifdef CPU_ARM | ||
32 | #undef ICODE_ATTR | ||
33 | #define ICODE_ATTR | ||
34 | #undef IDATA_ATTR | ||
35 | #define IDATA_ATTR | ||
36 | #else | ||
37 | #define ICODE_INSTEAD_OF_INLINE | ||
38 | #endif | ||
39 | |||
40 | /* Maximum number of bytes to process in one iteration */ | ||
41 | #define WAV_CHUNK_SIZE (1024*2) | ||
42 | |||
43 | static int16_t samples[WAV_CHUNK_SIZE] IBSS_ATTR; | ||
44 | |||
45 | #define ZEROMEMORY(addr,size) memset(addr,0,size) | ||
46 | |||
47 | /* simple profiling with USEC_TIMER | ||
48 | |||
49 | #define NSF_PROFILE | ||
50 | |||
51 | */ | ||
52 | |||
53 | #ifdef NSF_PROFILE | ||
54 | |||
55 | #define CREATE_TIMER(name) uint32_t nsf_timer_##name##_start,\ | ||
56 | nsf_timer_##name##_total | ||
57 | #define ENTER_TIMER(name) nsf_timer_##name##_start=USEC_TIMER | ||
58 | #define EXIT_TIMER(name) nsf_timer_##name##_total+=\ | ||
59 | (USEC_TIMER-nsf_timer_##name##_start) | ||
60 | #define READ_TIMER(name) (nsf_timer_##name##_total) | ||
61 | #define RESET_TIMER(name) nsf_timer_##name##_total=0 | ||
62 | |||
63 | #define PRINT_TIMER_PCT(bname,tname,nstr) ci->fdprintf( | ||
64 | logfd,"%10ld ",READ_TIMER(bname));\ | ||
65 | ci->fdprintf(logfd,"(%3d%%) " nstr "\t",\ | ||
66 | ((uint64_t)READ_TIMER(bname))*100/READ_TIMER(tname)) | ||
67 | |||
68 | CREATE_TIMER(total); | ||
69 | CREATE_TIMER(cpu); | ||
70 | CREATE_TIMER(apu); | ||
71 | CREATE_TIMER(squares); | ||
72 | CREATE_TIMER(tnd); | ||
73 | CREATE_TIMER(tnd_enter); | ||
74 | CREATE_TIMER(tnd_tri); | ||
75 | CREATE_TIMER(tnd_noise); | ||
76 | CREATE_TIMER(tnd_dmc); | ||
77 | CREATE_TIMER(fds); | ||
78 | CREATE_TIMER(frame); | ||
79 | CREATE_TIMER(mix); | ||
80 | |||
81 | void reset_profile_timers(void) { | ||
82 | RESET_TIMER(total); | ||
83 | RESET_TIMER(cpu); | ||
84 | RESET_TIMER(apu); | ||
85 | RESET_TIMER(squares); | ||
86 | RESET_TIMER(tnd); | ||
87 | RESET_TIMER(tnd_enter); | ||
88 | RESET_TIMER(tnd_tri); | ||
89 | RESET_TIMER(tnd_noise); | ||
90 | RESET_TIMER(tnd_dmc); | ||
91 | RESET_TIMER(fds); | ||
92 | RESET_TIMER(frame); | ||
93 | RESET_TIMER(mix); | ||
94 | } | ||
95 | |||
96 | int logfd=-1; | ||
97 | |||
98 | void print_timers(char * path, int track) { | ||
99 | logfd = ci->open("/nsflog.txt",O_WRONLY|O_CREAT|O_APPEND); | ||
100 | ci->fdprintf(logfd,"%s[%d]:\t",path,track); | ||
101 | ci->fdprintf(logfd,"%10ld total\t",READ_TIMER(total)); | ||
102 | PRINT_TIMER_PCT(cpu,total,"CPU"); | ||
103 | PRINT_TIMER_PCT(apu,total,"APU"); | ||
104 | ci->fdprintf(logfd,"\n\t"); | ||
105 | PRINT_TIMER_PCT(squares,apu,"squares"); | ||
106 | PRINT_TIMER_PCT(frame,apu,"frame"); | ||
107 | PRINT_TIMER_PCT(mix,apu,"mix"); | ||
108 | PRINT_TIMER_PCT(fds,apu,"FDS"); | ||
109 | PRINT_TIMER_PCT(tnd,apu,"tnd"); | ||
110 | ci->fdprintf(logfd,"\n\t\t"); | ||
111 | PRINT_TIMER_PCT(tnd_enter,tnd,"enter"); | ||
112 | PRINT_TIMER_PCT(tnd_tri,tnd,"triangle"); | ||
113 | PRINT_TIMER_PCT(tnd_noise,tnd,"noise"); | ||
114 | PRINT_TIMER_PCT(tnd_dmc,tnd,"DMC"); | ||
115 | ci->fdprintf(logfd,"\n"); | ||
116 | |||
117 | ci->close(logfd); | ||
118 | logfd=-1; | ||
119 | } | ||
120 | |||
121 | #else | ||
122 | |||
123 | #define CREATE_TIMER(name) | ||
124 | #define ENTER_TIMER(name) | ||
125 | #define EXIT_TIMER(name) | ||
126 | #define READ_TIMER(name) | ||
127 | #define RESET_TIMER(name) | ||
128 | #define print_timers(path,track) | ||
129 | #define reset_profile_timers() | ||
130 | |||
131 | #endif | ||
132 | |||
133 | /* proper handling of multibyte values */ | ||
134 | #ifdef ROCKBOX_LITTLE_ENDIAN | ||
135 | union TWIN | ||
136 | { | ||
137 | uint16_t W; | ||
138 | struct{ uint8_t l; uint8_t h; } B; | ||
139 | }; | ||
140 | |||
141 | union QUAD | ||
142 | { | ||
143 | uint32_t D; | ||
144 | struct{ uint8_t l; uint8_t h; uint16_t w; } B; | ||
145 | }; | ||
146 | #else | ||
147 | |||
148 | union TWIN | ||
149 | { | ||
150 | uint16_t W; | ||
151 | struct{ uint8_t h; uint8_t l; } B; | ||
152 | }; | ||
153 | |||
154 | union QUAD | ||
155 | { | ||
156 | uint32_t D; | ||
157 | struct{uint16_t w; uint8_t h; uint8_t l; } B; | ||
158 | }; | ||
159 | |||
160 | #endif | ||
161 | |||
162 | #define NTSC_FREQUENCY 1789772.727273f | ||
163 | #define PAL_FREQUENCY 1652097.692308f | ||
164 | #define NTSC_NMIRATE 60.098814f | ||
165 | #define PAL_NMIRATE 50.006982f | ||
166 | |||
167 | #define NES_FREQUENCY 21477270 | ||
168 | #define NTSC_FRAME_COUNTER_FREQ (NTSC_FREQUENCY / (NES_FREQUENCY / 89490.0f)) | ||
169 | #define PAL_FRAME_COUNTER_FREQ (PAL_FREQUENCY / (NES_FREQUENCY / 89490.0f)) | ||
170 | |||
171 | /****************** tables */ | ||
172 | static const int32_t ModulationTable[8] ICONST_ATTR = {0,1,2,4,0,-4,-2,-1}; | ||
173 | const uint16_t DMC_FREQ_TABLE[2][0x10] = { | ||
174 | /* NTSC */ | ||
175 | {0x1AC,0x17C,0x154,0x140,0x11E,0x0FE,0x0E2,0x0D6,0x0BE,0x0A0,0x08E,0x080, | ||
176 | 0x06A,0x054,0x048,0x036}, | ||
177 | /* PAL */ | ||
178 | {0x18C,0x160,0x13A,0x128,0x108,0x0EA,0x0D0,0x0C6,0x0B0,0x094,0x082,0x076, | ||
179 | 0x062,0x04E,0x042,0x032} | ||
180 | }; | ||
181 | |||
182 | const uint8_t DUTY_CYCLE_TABLE[4] = {2,4,8,12}; | ||
183 | |||
184 | const uint8_t LENGTH_COUNTER_TABLE[0x20] = { | ||
185 | 0x0A,0xFE,0x14,0x02,0x28,0x04,0x50,0x06,0xA0,0x08,0x3C,0x0A,0x0E,0x0C,0x1A, | ||
186 | 0x0E,0x0C,0x10,0x18,0x12,0x30,0x14,0x60,0x16,0xC0,0x18,0x48,0x1A,0x10,0x1C, | ||
187 | 0x20,0x1E | ||
188 | }; | ||
189 | |||
190 | const uint16_t NOISE_FREQ_TABLE[0x10] = { | ||
191 | 0x004,0x008,0x010,0x020,0x040,0x060,0x080,0x0A0,0x0CA,0x0FE,0x17C,0x1FC, | ||
192 | 0x2FA,0x3F8,0x7F2,0xFE4 | ||
193 | }; | ||
194 | |||
195 | /****************** NSF loading ******************/ | ||
196 | |||
197 | /* file format structs (both are little endian) */ | ||
198 | |||
199 | struct NESM_HEADER | ||
200 | { | ||
201 | uint32_t nHeader; | ||
202 | uint8_t nHeaderExtra; | ||
203 | uint8_t nVersion; | ||
204 | uint8_t nTrackCount; | ||
205 | uint8_t nInitialTrack; | ||
206 | uint16_t nLoadAddress; | ||
207 | uint16_t nInitAddress; | ||
208 | uint16_t nPlayAddress; | ||
209 | uint8_t szGameTitle[32]; | ||
210 | uint8_t szArtist[32]; | ||
211 | uint8_t szCopyright[32]; | ||
212 | uint16_t nSpeedNTSC; | ||
213 | uint8_t nBankSwitch[8]; | ||
214 | uint16_t nSpeedPAL; | ||
215 | uint8_t nNTSC_PAL; | ||
216 | uint8_t nExtraChip; | ||
217 | uint8_t nExpansion[4]; | ||
218 | }; | ||
219 | |||
220 | struct NSFE_INFOCHUNK | ||
221 | { | ||
222 | uint16_t nLoadAddress; | ||
223 | uint16_t nInitAddress; | ||
224 | uint16_t nPlayAddress; | ||
225 | uint8_t nIsPal; | ||
226 | uint8_t nExt; | ||
227 | uint8_t nTrackCount; | ||
228 | uint8_t nStartingTrack; | ||
229 | }; | ||
230 | |||
231 | int32_t LoadFile(uint8_t *,size_t); | ||
232 | |||
233 | int32_t LoadFile_NESM(uint8_t *,size_t); | ||
234 | int32_t LoadFile_NSFE(uint8_t *,size_t); | ||
235 | |||
236 | /* NSF file info */ | ||
237 | |||
238 | /* basic NSF info */ | ||
239 | int32_t bIsExtended=0; /* 0 = NSF, 1 = NSFE */ | ||
240 | uint8_t nIsPal=0; /* 0 = NTSC, 1 = PAL, | ||
241 | 2,3 = mixed NTSC/PAL (interpretted as NTSC) */ | ||
242 | int32_t nfileLoadAddress=0; /* The address to which the NSF code is | ||
243 | loaded */ | ||
244 | int32_t nfileInitAddress=0; /* The address of the Init routine | ||
245 | (called at track change) */ | ||
246 | int32_t nfilePlayAddress=0; /* The address of the Play routine | ||
247 | (called several times a second) */ | ||
248 | uint8_t nChipExtensions=0; /* Bitwise representation of the external chips | ||
249 | used by this NSF. */ | ||
250 | |||
251 | /* old NESM speed stuff (blarg) */ | ||
252 | int32_t nNTSC_PlaySpeed=0; | ||
253 | int32_t nPAL_PlaySpeed=0; | ||
254 | |||
255 | /* track info */ | ||
256 | /* The number of tracks in the NSF (1 = 1 track, 5 = 5 tracks, etc) */ | ||
257 | int32_t nTrackCount=0; | ||
258 | /* The initial track (ZERO BASED: 0 = 1st track, 4 = 5th track, etc) */ | ||
259 | int32_t nInitialTrack=0; | ||
260 | |||
261 | /* nsf data */ | ||
262 | uint8_t* pDataBuffer=0; /* the buffer containing NSF code. */ | ||
263 | int32_t nDataBufferSize=0; /* the size of the above buffer. */ | ||
264 | |||
265 | /* playlist */ | ||
266 | uint8_t nPlaylist[256]; /* Each entry is the zero based index of the | ||
267 | song to play */ | ||
268 | int32_t nPlaylistSize=0; /* the number of tracks in the playlist */ | ||
269 | |||
270 | /* track time / fade */ | ||
271 | int32_t nTrackTime[256]; /* track times -1 if no track times specified */ | ||
272 | int32_t nTrackFade[256]; /* track fade times -1 if none are specified */ | ||
273 | |||
274 | /* string info */ | ||
275 | uint8_t szGameTitle[0x101]; | ||
276 | uint8_t szArtist[0x101]; | ||
277 | uint8_t szCopyright[0x101]; | ||
278 | uint8_t szRipper[0x101]; | ||
279 | |||
280 | /* bankswitching info */ | ||
281 | uint8_t nBankswitch[8]={0}; /* The initial bankswitching registers needed | ||
282 | * for some NSFs. If the NSF does not use | ||
283 | * bankswitching, these values will all be zero | ||
284 | */ | ||
285 | |||
286 | int32_t LoadFile(uint8_t * inbuffer, size_t size) | ||
287 | { | ||
288 | if(!inbuffer) return -1; | ||
289 | |||
290 | int32_t ret = -1; | ||
291 | |||
292 | if(!memcmp(inbuffer,"NESM",4)) ret = LoadFile_NESM(inbuffer,size); | ||
293 | if(!memcmp(inbuffer,"NSFE",4)) ret = LoadFile_NSFE(inbuffer,size); | ||
294 | |||
295 | /* | ||
296 | * Snake's revenge puts '00' for the initial track, | ||
297 | * which (after subtracting 1) makes it 256 or -1 (bad!) | ||
298 | * This prevents that crap | ||
299 | */ | ||
300 | if(nInitialTrack >= nTrackCount) | ||
301 | nInitialTrack = 0; | ||
302 | if(nInitialTrack < 0) | ||
303 | nInitialTrack = 0; | ||
304 | |||
305 | /* if there's no tracks... this is a crap NSF */ | ||
306 | if(nTrackCount < 1) | ||
307 | { | ||
308 | return -1; | ||
309 | } | ||
310 | |||
311 | return ret; | ||
312 | } | ||
313 | |||
314 | int32_t LoadFile_NESM(uint8_t* inbuffer, size_t size) | ||
315 | { | ||
316 | uint8_t ignoreversion=1; | ||
317 | uint8_t needdata=1; | ||
318 | |||
319 | /* read the info */ | ||
320 | struct NESM_HEADER hdr; | ||
321 | |||
322 | memcpy(&hdr,inbuffer,sizeof(hdr)); | ||
323 | |||
324 | /* confirm the header */ | ||
325 | if(memcmp("NESM",&(hdr.nHeader),4)) return -1; | ||
326 | if(hdr.nHeaderExtra != 0x1A) return -1; | ||
327 | /* stupid NSFs claim to be above version 1 >_> */ | ||
328 | if((!ignoreversion) && (hdr.nVersion != 1)) return -1; | ||
329 | |||
330 | /* | ||
331 | * NESM is generally easier to work with (but limited!) | ||
332 | * just move the data over from NESM_HEADER over to our member data | ||
333 | */ | ||
334 | |||
335 | bIsExtended = 0; | ||
336 | nIsPal = hdr.nNTSC_PAL & 0x03; | ||
337 | nPAL_PlaySpeed = letoh16(hdr.nSpeedPAL); | ||
338 | nNTSC_PlaySpeed = letoh16(hdr.nSpeedNTSC); | ||
339 | nfileLoadAddress = letoh16(hdr.nLoadAddress); | ||
340 | nfileInitAddress = letoh16(hdr.nInitAddress); | ||
341 | nfilePlayAddress = letoh16(hdr.nPlayAddress); | ||
342 | nChipExtensions = hdr.nExtraChip; | ||
343 | |||
344 | |||
345 | nTrackCount = hdr.nTrackCount; | ||
346 | nInitialTrack = hdr.nInitialTrack - 1; | ||
347 | |||
348 | memcpy(nBankswitch,hdr.nBankSwitch,8); | ||
349 | |||
350 | memcpy(szGameTitle,hdr.szGameTitle,32); | ||
351 | memcpy(szArtist ,hdr.szArtist ,32); | ||
352 | memcpy(szCopyright,hdr.szCopyright,32); | ||
353 | |||
354 | /* read the NSF data */ | ||
355 | if(needdata) | ||
356 | { | ||
357 | pDataBuffer=inbuffer+0x80; | ||
358 | nDataBufferSize=size-0x80; | ||
359 | } | ||
360 | |||
361 | /* if we got this far... it was a successful read */ | ||
362 | return 0; | ||
363 | } | ||
364 | |||
365 | int32_t LoadFile_NSFE(uint8_t* inbuffer, size_t size) | ||
366 | { | ||
367 | /* the vars we'll be using */ | ||
368 | uint32_t nChunkType; | ||
369 | int32_t nChunkSize; | ||
370 | int32_t nChunkUsed; | ||
371 | int32_t i; | ||
372 | uint8_t * nDataPos = 0; | ||
373 | uint8_t bInfoFound = 0; | ||
374 | uint8_t bEndFound = 0; | ||
375 | uint8_t bBankFound = 0; | ||
376 | nPlaylistSize=-1; | ||
377 | |||
378 | struct NSFE_INFOCHUNK info; | ||
379 | ZEROMEMORY(&info,sizeof(struct NSFE_INFOCHUNK)); | ||
380 | ZEROMEMORY(nBankswitch,8); | ||
381 | info.nTrackCount = 1; /* default values */ | ||
382 | |||
383 | if (size < 8) return -1; /* must have at least NSFE,NEND */ | ||
384 | |||
385 | /* confirm the header! */ | ||
386 | memcpy(&nChunkType,inbuffer,4); | ||
387 | inbuffer+=4; | ||
388 | if(memcmp(&nChunkType,"NSFE",4)) return -1; | ||
389 | |||
390 | for (i=0;i<256;i++) { | ||
391 | nTrackTime[i]=-1; | ||
392 | nTrackFade[i]=-1; | ||
393 | } | ||
394 | |||
395 | /* begin reading chunks */ | ||
396 | while(!bEndFound) | ||
397 | { | ||
398 | memcpy(&nChunkSize,inbuffer,4); | ||
399 | nChunkSize=letoh32(nChunkSize); | ||
400 | inbuffer+=4; | ||
401 | memcpy(&nChunkType,inbuffer,4); | ||
402 | inbuffer+=4; | ||
403 | |||
404 | if(!memcmp(&nChunkType,"INFO",4)) { | ||
405 | /* only one info chunk permitted */ | ||
406 | if(bInfoFound) return -1; | ||
407 | if(nChunkSize < 8) return -1; /* minimum size */ | ||
408 | |||
409 | bInfoFound = 1; | ||
410 | nChunkUsed = MIN((int32_t)sizeof(struct NSFE_INFOCHUNK), | ||
411 | nChunkSize); | ||
412 | |||
413 | memcpy(&info,inbuffer,nChunkUsed); | ||
414 | inbuffer+=nChunkSize; | ||
415 | |||
416 | bIsExtended = 1; | ||
417 | nIsPal = info.nIsPal & 3; | ||
418 | nfileLoadAddress = letoh16(info.nLoadAddress); | ||
419 | nfileInitAddress = letoh16(info.nInitAddress); | ||
420 | nfilePlayAddress = letoh16(info.nPlayAddress); | ||
421 | nChipExtensions = info.nExt; | ||
422 | nTrackCount = info.nTrackCount; | ||
423 | nInitialTrack = info.nStartingTrack; | ||
424 | |||
425 | nPAL_PlaySpeed = (uint16_t)(1000000 / PAL_NMIRATE); | ||
426 | nNTSC_PlaySpeed = (uint16_t)(1000000 / NTSC_NMIRATE); | ||
427 | } else if (!memcmp(&nChunkType,"DATA",4)) { | ||
428 | if(!bInfoFound) return -1; | ||
429 | if(nDataPos) return -1; | ||
430 | if(nChunkSize < 1) return -1; | ||
431 | |||
432 | nDataBufferSize = nChunkSize; | ||
433 | nDataPos = inbuffer; | ||
434 | |||
435 | inbuffer+=nChunkSize; | ||
436 | } else if (!memcmp(&nChunkType,"NEND",4)) { | ||
437 | bEndFound = 1; | ||
438 | } else if (!memcmp(&nChunkType,"time",4)) { | ||
439 | if(!bInfoFound) return -1; | ||
440 | for (nChunkUsed=0; nChunkUsed < MIN(nChunkSize / 4,nTrackCount); | ||
441 | nChunkUsed++,inbuffer+=4) { | ||
442 | nTrackTime[nChunkUsed]= | ||
443 | ((uint32_t)inbuffer[0])| | ||
444 | ((uint32_t)inbuffer[1]<<8)| | ||
445 | ((uint32_t)inbuffer[2]<<16)| | ||
446 | ((uint32_t)inbuffer[3]<<24); | ||
447 | } | ||
448 | |||
449 | inbuffer+=nChunkSize-(nChunkUsed*4); | ||
450 | |||
451 | /* negative signals to use default time */ | ||
452 | for(; nChunkUsed < nTrackCount; nChunkUsed++) | ||
453 | nTrackTime[nChunkUsed] = -1; | ||
454 | } else if (!memcmp(&nChunkType,"fade",4)) { | ||
455 | if(!bInfoFound) return -1; | ||
456 | for (nChunkUsed=0; nChunkUsed < MIN(nChunkSize / 4,nTrackCount); | ||
457 | nChunkUsed++,inbuffer+=4) { | ||
458 | nTrackFade[nChunkUsed]= | ||
459 | ((uint32_t)inbuffer[0])| | ||
460 | ((uint32_t)inbuffer[1]<<8)| | ||
461 | ((uint32_t)inbuffer[2]<<16)| | ||
462 | ((uint32_t)inbuffer[3]<<24); | ||
463 | } | ||
464 | |||
465 | inbuffer+=nChunkSize-(nChunkUsed*4); | ||
466 | |||
467 | /* negative signals to use default time */ | ||
468 | for(; nChunkUsed < nTrackCount; nChunkUsed++) | ||
469 | nTrackFade[nChunkUsed] = -1; | ||
470 | } else if (!memcmp(&nChunkType,"BANK",4)) { | ||
471 | if(bBankFound) return -1; | ||
472 | |||
473 | bBankFound = 1; | ||
474 | nChunkUsed = MIN(8,nChunkSize); | ||
475 | memcpy(nBankswitch,inbuffer,nChunkUsed); | ||
476 | |||
477 | inbuffer+=nChunkSize; | ||
478 | } else if (!memcmp(&nChunkType,"plst",4)) { | ||
479 | |||
480 | nPlaylistSize = nChunkSize; | ||
481 | if(nPlaylistSize >= 1) { | ||
482 | |||
483 | memcpy(nPlaylist,inbuffer,nChunkSize); | ||
484 | inbuffer+=nChunkSize; | ||
485 | } | ||
486 | } else if (!memcmp(&nChunkType,"auth",4)) { | ||
487 | uint8_t* ptr; | ||
488 | |||
489 | ptr = inbuffer; | ||
490 | |||
491 | uint8_t* ar[4] = {szGameTitle,szArtist,szCopyright,szRipper}; | ||
492 | int32_t i; | ||
493 | for(i = 0; (ptr-inbuffer)<nChunkSize && i < 4; i++) | ||
494 | { | ||
495 | nChunkUsed = strlen(ptr) + 1; | ||
496 | memcpy(ar[i],ptr,nChunkUsed); | ||
497 | ptr += nChunkUsed; | ||
498 | } | ||
499 | inbuffer+=nChunkSize; | ||
500 | } else if (!memcmp(&nChunkType,"tlbl",4)) { | ||
501 | /* we unfortunately can't use these anyway */ | ||
502 | inbuffer+=nChunkSize; | ||
503 | } else { /* unknown chunk */ | ||
504 | nChunkType = letoh32(nChunkType)>>24; /* check the first byte */ | ||
505 | /* chunk is vital... don't continue */ | ||
506 | if((nChunkType >= 'A') && (nChunkType <= 'Z')) | ||
507 | return -1; | ||
508 | /* otherwise, just skip it */ | ||
509 | inbuffer+=nChunkSize; | ||
510 | } /* end if series */ | ||
511 | } /* end while */ | ||
512 | |||
513 | /* | ||
514 | * if we exited the while loop without a 'return', we must have hit an NEND | ||
515 | * chunk if this is the case, the file was layed out as it was expected. | ||
516 | * now.. make sure we found both an info chunk, AND a data chunk... since | ||
517 | * these are minimum requirements for a valid NSFE file | ||
518 | */ | ||
519 | |||
520 | if(!bInfoFound) return -1; | ||
521 | if(!nDataPos) return -1; | ||
522 | |||
523 | /* if both those chunks existed, this file is valid. | ||
524 | Load the data if it's needed */ | ||
525 | |||
526 | pDataBuffer=nDataPos; | ||
527 | |||
528 | /* return success! */ | ||
529 | return 0; | ||
530 | } | ||
531 | |||
532 | |||
533 | /****************** Audio Device Structures ******************/ | ||
534 | |||
535 | struct FDSWave | ||
536 | { | ||
537 | /* Envelope Unit */ | ||
538 | uint8_t bEnvelopeEnable; | ||
539 | uint8_t nEnvelopeSpeed; | ||
540 | |||
541 | /* Volume Envelope */ | ||
542 | uint8_t nVolEnv_Mode; | ||
543 | uint8_t nVolEnv_Decay; | ||
544 | uint8_t nVolEnv_Gain; | ||
545 | int32_t nVolEnv_Timer; | ||
546 | int32_t nVolEnv_Count; | ||
547 | uint8_t nVolume; | ||
548 | uint8_t bVolEnv_On; | ||
549 | |||
550 | /* Sweep Envenlope */ | ||
551 | uint8_t nSweep_Mode; | ||
552 | uint8_t nSweep_Decay; | ||
553 | int32_t nSweep_Timer; | ||
554 | int32_t nSweep_Count; | ||
555 | uint8_t nSweep_Gain; | ||
556 | uint8_t bSweepEnv_On; | ||
557 | |||
558 | /* Effector / LFO / Modulation Unit */ | ||
559 | int32_t nSweepBias; | ||
560 | uint8_t bLFO_Enabled; | ||
561 | union TWIN nLFO_Freq; | ||
562 | /*float fLFO_Timer;*/ | ||
563 | /*float fLFO_Count;*/ | ||
564 | int32_t nLFO_Timer; /* -17.14*/ | ||
565 | int32_t nLFO_Count; /* -17.14*/ | ||
566 | uint8_t nLFO_Addr; | ||
567 | uint8_t nLFO_Table[0x40]; | ||
568 | uint8_t bLFO_On; | ||
569 | |||
570 | /* Main Output */ | ||
571 | uint8_t nMainVolume; | ||
572 | uint8_t bEnabled; | ||
573 | union TWIN nFreq; | ||
574 | /*float fFreqCount;*/ | ||
575 | int32_t nFreqCount; /* -17.14 */ | ||
576 | uint8_t nMainAddr; | ||
577 | uint8_t nWaveTable[0x40]; | ||
578 | uint8_t bWaveWrite; | ||
579 | uint8_t bMain_On; | ||
580 | |||
581 | /* Output and Downsampling */ | ||
582 | int32_t nMixL; | ||
583 | |||
584 | /* Pop Reducer */ | ||
585 | uint8_t bPopReducer; | ||
586 | uint8_t nPopOutput; | ||
587 | int32_t nPopCount; | ||
588 | |||
589 | }; | ||
590 | int16_t FDS_nOutputTable_L[4][0x21][0x40]; | ||
591 | |||
592 | struct FME07Wave | ||
593 | { | ||
594 | /* Frequency Control */ | ||
595 | union TWIN nFreqTimer; | ||
596 | int32_t nFreqCount; | ||
597 | |||
598 | /* Channel Disabling */ | ||
599 | uint8_t bChannelEnabled; | ||
600 | |||
601 | /* Volume */ | ||
602 | uint8_t nVolume; | ||
603 | |||
604 | /* Duty Cycle */ | ||
605 | uint8_t nDutyCount; | ||
606 | |||
607 | /* Output and Downsampling */ | ||
608 | int32_t nMixL; | ||
609 | }; | ||
610 | |||
611 | int16_t FME07_nOutputTable_L[3][0x10] IDATA_ATTR; | ||
612 | |||
613 | struct N106Wave | ||
614 | { | ||
615 | /* All Channel Stuff */ | ||
616 | |||
617 | uint8_t nActiveChannels; | ||
618 | uint8_t bAutoIncrement; | ||
619 | uint8_t nCurrentAddress; | ||
620 | uint8_t nRAM[0x100]; /* internal memory for registers/wave data */ | ||
621 | float fFrequencyLookupTable[8]; /* lookup tbl for freq conversions */ | ||
622 | |||
623 | /* | ||
624 | * Individual channel stuff | ||
625 | */ | ||
626 | /* Wavelength / Frequency */ | ||
627 | union QUAD nFreqReg[8]; | ||
628 | float fFreqTimer[8]; | ||
629 | float fFreqCount[8]; | ||
630 | |||
631 | /* Wave data length / remaining */ | ||
632 | uint8_t nWaveSize[8]; | ||
633 | uint8_t nWaveRemaining[8]; | ||
634 | |||
635 | /* Wave data position */ | ||
636 | uint8_t nWavePosStart[8]; | ||
637 | uint8_t nWavePos[8]; | ||
638 | uint8_t nOutput[8]; | ||
639 | |||
640 | /* Volume */ | ||
641 | uint8_t nVolume[8]; | ||
642 | |||
643 | /* Pop Reducer */ | ||
644 | uint8_t nPreVolume[8]; | ||
645 | uint8_t nPopCheck[8]; | ||
646 | |||
647 | /* Mixing */ | ||
648 | int32_t nMixL[8]; | ||
649 | }; | ||
650 | |||
651 | int16_t N106_nOutputTable_L[8][0x10][0x10]; | ||
652 | |||
653 | struct VRC6PulseWave | ||
654 | { | ||
655 | |||
656 | /* Frequency Control */ | ||
657 | union TWIN nFreqTimer; | ||
658 | int32_t nFreqCount; | ||
659 | |||
660 | /* Flags */ | ||
661 | uint8_t bChannelEnabled; | ||
662 | uint8_t bDigitized; | ||
663 | |||
664 | /* Volume */ | ||
665 | uint8_t nVolume; | ||
666 | |||
667 | /* Duty Cycle */ | ||
668 | uint8_t nDutyCycle; | ||
669 | uint8_t nDutyCount; | ||
670 | |||
671 | /* Output and Downsampling */ | ||
672 | int32_t nMixL; | ||
673 | |||
674 | }; | ||
675 | |||
676 | int16_t VRC6Pulse_nOutputTable_L[2][0x10] IDATA_ATTR; | ||
677 | |||
678 | struct VRC6SawWave | ||
679 | { | ||
680 | |||
681 | /* Frequency Control */ | ||
682 | union TWIN nFreqTimer; | ||
683 | int32_t nFreqCount; | ||
684 | |||
685 | /* Flags */ | ||
686 | uint8_t bChannelEnabled; | ||
687 | |||
688 | /* Phase Accumulator */ | ||
689 | uint8_t nAccumRate; | ||
690 | uint8_t nAccum; | ||
691 | uint8_t nAccumStep; | ||
692 | |||
693 | /* Output and Downsampling */ | ||
694 | int32_t nMixL; | ||
695 | |||
696 | }; | ||
697 | |||
698 | int16_t VRC6Saw_nOutputTable_L[0x20] IDATA_ATTR; | ||
699 | |||
700 | struct Wave_Squares | ||
701 | { | ||
702 | |||
703 | /* Programmable Timer */ | ||
704 | union TWIN nFreqTimer[2]; | ||
705 | int32_t nFreqCount[2]; | ||
706 | |||
707 | /* Length Counter */ | ||
708 | uint8_t nLengthCount[2]; | ||
709 | uint8_t bLengthEnabled[2]; | ||
710 | uint8_t bChannelEnabled[2]; | ||
711 | |||
712 | /* Volume / Decay */ | ||
713 | uint8_t nVolume[2]; | ||
714 | uint8_t nDecayVolume[2]; | ||
715 | uint8_t bDecayEnable[2]; | ||
716 | uint8_t bDecayLoop[2]; | ||
717 | uint8_t nDecayTimer[2]; | ||
718 | uint8_t nDecayCount[2]; | ||
719 | |||
720 | /* Sweep Unit */ | ||
721 | uint8_t bSweepEnable[2]; | ||
722 | uint8_t bSweepMode[2]; | ||
723 | uint8_t bSweepForceSilence[2]; | ||
724 | uint8_t nSweepTimer[2]; | ||
725 | uint8_t nSweepCount[2]; | ||
726 | uint8_t nSweepShift[2]; | ||
727 | |||
728 | /* Duty Cycle */ | ||
729 | uint8_t nDutyCount[2]; | ||
730 | uint8_t nDutyCycle[2]; | ||
731 | |||
732 | /* Output and Downsampling */ | ||
733 | int32_t nMixL; | ||
734 | }; | ||
735 | |||
736 | int16_t Squares_nOutputTable_L[0x100] IDATA_ATTR; | ||
737 | |||
738 | struct Wave_TND | ||
739 | { | ||
740 | |||
741 | /* | ||
742 | * Triangle | ||
743 | */ | ||
744 | |||
745 | /* Programmable Timer */ | ||
746 | union TWIN nTriFreqTimer; | ||
747 | int32_t nTriFreqCount; | ||
748 | |||
749 | /* Length Counter */ | ||
750 | uint8_t nTriLengthCount; | ||
751 | uint8_t bTriLengthEnabled; | ||
752 | uint8_t bTriChannelEnabled; | ||
753 | |||
754 | /* Linear Counter */ | ||
755 | uint8_t nTriLinearCount; | ||
756 | uint8_t nTriLinearLoad; | ||
757 | uint8_t bTriLinearHalt; | ||
758 | uint8_t bTriLinearControl; | ||
759 | |||
760 | /* Tri-Step Generator / Output */ | ||
761 | uint8_t nTriStep; | ||
762 | uint8_t nTriOutput; | ||
763 | |||
764 | /* | ||
765 | * Noise | ||
766 | */ | ||
767 | |||
768 | /* Programmable Timer */ | ||
769 | uint16_t nNoiseFreqTimer; | ||
770 | int32_t nNoiseFreqCount; | ||
771 | |||
772 | /* Length Counter */ | ||
773 | uint8_t nNoiseLengthCount; | ||
774 | uint8_t bNoiseLengthEnabled; | ||
775 | uint8_t bNoiseChannelEnabled; | ||
776 | |||
777 | /* Volume / Decay */ | ||
778 | uint8_t nNoiseVolume; | ||
779 | uint8_t nNoiseDecayVolume; | ||
780 | uint8_t bNoiseDecayEnable; | ||
781 | uint8_t bNoiseDecayLoop; | ||
782 | uint8_t nNoiseDecayTimer; | ||
783 | uint8_t nNoiseDecayCount; | ||
784 | |||
785 | /* Random Number Generator */ | ||
786 | uint16_t nNoiseRandomShift; | ||
787 | uint8_t bNoiseRandomMode; /* 1 = 32k, 6 = 93-bit */ | ||
788 | uint8_t bNoiseRandomOut; | ||
789 | |||
790 | /* | ||
791 | * DMC | ||
792 | */ | ||
793 | |||
794 | /* Play Mode */ | ||
795 | uint8_t bDMCLoop; | ||
796 | uint8_t bDMCIRQEnabled; | ||
797 | uint8_t bDMCIRQPending; | ||
798 | |||
799 | /* Address / DMA */ | ||
800 | uint8_t nDMCDMABank_Load; | ||
801 | uint16_t nDMCDMAAddr_Load; | ||
802 | uint8_t nDMCDMABank; | ||
803 | uint16_t nDMCDMAAddr; | ||
804 | uint8_t* pDMCDMAPtr[8]; | ||
805 | |||
806 | /* Length / Input */ | ||
807 | uint16_t nDMCLength; | ||
808 | uint16_t nDMCBytesRemaining; | ||
809 | uint8_t nDMCDelta; | ||
810 | uint8_t nDMCDeltaBit; | ||
811 | uint8_t bDMCDeltaSilent; | ||
812 | uint8_t nDMCSampleBuffer; | ||
813 | uint8_t bDMCSampleBufferEmpty; | ||
814 | |||
815 | /* Frequency */ | ||
816 | uint16_t nDMCFreqTimer; | ||
817 | int32_t nDMCFreqCount; | ||
818 | |||
819 | /* Output */ | ||
820 | uint8_t bDMCActive; | ||
821 | uint8_t nDMCOutput; | ||
822 | |||
823 | int32_t nMixL; | ||
824 | }; | ||
825 | |||
826 | /* channels */ | ||
827 | struct Wave_Squares mWave_Squares IDATA_ATTR; /* Square channels 1 and 2 */ | ||
828 | struct Wave_TND mWave_TND IDATA_ATTR; /* Triangle/Noise/DMC channels */ | ||
829 | struct VRC6PulseWave mWave_VRC6Pulse[2] IDATA_ATTR; | ||
830 | struct VRC6SawWave mWave_VRC6Saw IDATA_ATTR; | ||
831 | struct N106Wave mWave_N106; | ||
832 | struct FDSWave mWave_FDS IDATA_ATTR; | ||
833 | struct FME07Wave mWave_FME07[3] IDATA_ATTR; /* FME-07's 3 pulse channels */ | ||
834 | |||
835 | |||
836 | /****************** MMC5 ******************/ | ||
837 | /* will include MMC5 sound channels some day, | ||
838 | currently only multiply is supported */ | ||
839 | |||
840 | /****************** N106 (Disch loves this chip) ******************/ | ||
841 | |||
842 | #ifdef ICODE_INSTEAD_OF_INLINE | ||
843 | void Wave_N106_DoTicks(const int32_t ticks) ICODE_ATTR; | ||
844 | void Wave_N106_DoTicks(const int32_t ticks) | ||
845 | #else | ||
846 | inline void Wave_N106_DoTicks(const int32_t ticks); | ||
847 | inline void Wave_N106_DoTicks(const int32_t ticks) | ||
848 | #endif | ||
849 | { | ||
850 | register int32_t i; | ||
851 | |||
852 | for(i = (7 - mWave_N106.nActiveChannels); i < 8; i++) | ||
853 | { | ||
854 | if(!mWave_N106.nFreqReg[i].D) | ||
855 | { | ||
856 | /* written frequency of zero will cause divide by zero error | ||
857 | makes me wonder if the formula was supposed to be Reg+1 */ | ||
858 | mWave_N106.nVolume[i] = mWave_N106.nPreVolume[i]; | ||
859 | continue; | ||
860 | } | ||
861 | |||
862 | { | ||
863 | mWave_N106.nMixL[i] = | ||
864 | N106_nOutputTable_L[i][mWave_N106.nVolume[i]] | ||
865 | [mWave_N106.nOutput[i]]; | ||
866 | |||
867 | if(mWave_N106.fFreqTimer[i] < 0) | ||
868 | mWave_N106.fFreqTimer[i] = | ||
869 | (mWave_N106.fFrequencyLookupTable[mWave_N106.nActiveChannels] / | ||
870 | mWave_N106.nFreqReg[i].D); | ||
871 | if(mWave_N106.fFreqCount[i] > mWave_N106.fFreqTimer[i]) | ||
872 | mWave_N106.fFreqCount[i] = mWave_N106.fFreqTimer[i]; | ||
873 | |||
874 | mWave_N106.fFreqCount[i] -= ticks; | ||
875 | while(mWave_N106.fFreqCount[i] <= 0) | ||
876 | { | ||
877 | mWave_N106.fFreqCount[i] += mWave_N106.fFreqTimer[i]; | ||
878 | if(mWave_N106.nWaveRemaining[i]) | ||
879 | { | ||
880 | mWave_N106.nWaveRemaining[i]--; | ||
881 | mWave_N106.nWavePos[i]++; | ||
882 | } | ||
883 | if(!mWave_N106.nWaveRemaining[i]) | ||
884 | { | ||
885 | mWave_N106.nWaveRemaining[i] = mWave_N106.nWaveSize[i]; | ||
886 | mWave_N106.nWavePos[i] = mWave_N106.nWavePosStart[i]; | ||
887 | if(mWave_N106.nVolume[i] != mWave_N106.nPreVolume[i]) | ||
888 | { | ||
889 | if(++mWave_N106.nPopCheck[i] >= 2) | ||
890 | { | ||
891 | mWave_N106.nPopCheck[i] = 0; | ||
892 | mWave_N106.nVolume[i] = mWave_N106.nPreVolume[i]; | ||
893 | } | ||
894 | } | ||
895 | } | ||
896 | |||
897 | mWave_N106.nOutput[i] = | ||
898 | mWave_N106.nRAM[mWave_N106.nWavePos[i]]; | ||
899 | |||
900 | if(!mWave_N106.nOutput[i]) | ||
901 | { | ||
902 | mWave_N106.nPopCheck[i] = 0; | ||
903 | mWave_N106.nVolume[i] = mWave_N106.nPreVolume[i]; | ||
904 | } | ||
905 | |||
906 | } | ||
907 | } | ||
908 | } | ||
909 | } | ||
910 | |||
911 | /****************** Square waves ******************/ | ||
912 | |||
913 | /* decay */ | ||
914 | #ifdef ICODE_INSTEAD_OF_INLINE | ||
915 | void Wave_Squares_ClockMajor(void) ICODE_ATTR; | ||
916 | void Wave_Squares_ClockMajor() | ||
917 | #else | ||
918 | inline void Wave_Squares_ClockMajor(void); | ||
919 | inline void Wave_Squares_ClockMajor() | ||
920 | #endif | ||
921 | { | ||
922 | if(mWave_Squares.nDecayCount[0]) | ||
923 | mWave_Squares.nDecayCount[0]--; | ||
924 | else | ||
925 | { | ||
926 | mWave_Squares.nDecayCount[0] = mWave_Squares.nDecayTimer[0]; | ||
927 | if(mWave_Squares.nDecayVolume[0]) | ||
928 | mWave_Squares.nDecayVolume[0]--; | ||
929 | else | ||
930 | { | ||
931 | if(mWave_Squares.bDecayLoop[0]) | ||
932 | mWave_Squares.nDecayVolume[0] = 0x0F; | ||
933 | } | ||
934 | |||
935 | if(mWave_Squares.bDecayEnable[0]) | ||
936 | mWave_Squares.nVolume[0] = mWave_Squares.nDecayVolume[0]; | ||
937 | } | ||
938 | |||
939 | if(mWave_Squares.nDecayCount[1]) | ||
940 | mWave_Squares.nDecayCount[1]--; | ||
941 | else | ||
942 | { | ||
943 | mWave_Squares.nDecayCount[1] = mWave_Squares.nDecayTimer[1]; | ||
944 | if(mWave_Squares.nDecayVolume[1]) | ||
945 | mWave_Squares.nDecayVolume[1]--; | ||
946 | else | ||
947 | { | ||
948 | if(mWave_Squares.bDecayLoop[1]) | ||
949 | mWave_Squares.nDecayVolume[1] = 0x0F; | ||
950 | } | ||
951 | |||
952 | if(mWave_Squares.bDecayEnable[1]) | ||
953 | mWave_Squares.nVolume[1] = mWave_Squares.nDecayVolume[1]; | ||
954 | } | ||
955 | |||
956 | } | ||
957 | |||
958 | |||
959 | #ifdef ICODE_INSTEAD_OF_INLINE | ||
960 | void Wave_Squares_CheckSweepForcedSilence(const int32_t i) ICODE_ATTR; | ||
961 | void Wave_Squares_CheckSweepForcedSilence(const int32_t i) | ||
962 | #else | ||
963 | inline void Wave_Squares_CheckSweepForcedSilence(const int32_t i); | ||
964 | inline void Wave_Squares_CheckSweepForcedSilence(const int32_t i) | ||
965 | #endif | ||
966 | { | ||
967 | if(mWave_Squares.nFreqTimer[i].W < 8) { | ||
968 | mWave_Squares.bSweepForceSilence[i] = 1; return; | ||
969 | } | ||
970 | if(!mWave_Squares.bSweepMode[i] && | ||
971 | (( mWave_Squares.nFreqTimer[i].W + | ||
972 | (mWave_Squares.nFreqTimer[i].W >> mWave_Squares.nSweepShift[i])) | ||
973 | >= 0x0800)) { mWave_Squares.bSweepForceSilence[i] = 1; return; } | ||
974 | |||
975 | mWave_Squares.bSweepForceSilence[i] = 0; | ||
976 | } | ||
977 | |||
978 | /* sweep / length */ | ||
979 | #ifdef ICODE_INSTEAD_OF_INLINE | ||
980 | void Wave_Squares_ClockMinor(void) ICODE_ATTR; | ||
981 | void Wave_Squares_ClockMinor() | ||
982 | #else | ||
983 | inline void Wave_Squares_ClockMinor(void); | ||
984 | inline void Wave_Squares_ClockMinor() | ||
985 | #endif | ||
986 | { | ||
987 | /* unrolled a little loop | ||
988 | static int i = 0; | ||
989 | for(i = 0; i < 2; i++) | ||
990 | { | ||
991 | */ | ||
992 | if(mWave_Squares.bLengthEnabled[0] && mWave_Squares.nLengthCount[0]) | ||
993 | mWave_Squares.nLengthCount[0]--; | ||
994 | |||
995 | if(!mWave_Squares.bSweepEnable[0] || !mWave_Squares.nLengthCount[0] || | ||
996 | mWave_Squares.bSweepForceSilence[0] || !mWave_Squares.nSweepShift[0]) | ||
997 | goto other_square; | ||
998 | |||
999 | if(mWave_Squares.nSweepCount[0]) | ||
1000 | mWave_Squares.nSweepCount[0]--; | ||
1001 | else | ||
1002 | { | ||
1003 | mWave_Squares.nSweepCount[0] = mWave_Squares.nSweepTimer[0]; | ||
1004 | if(mWave_Squares.bSweepMode[0]) mWave_Squares.nFreqTimer[0].W -= | ||
1005 | (mWave_Squares.nFreqTimer[0].W >> mWave_Squares.nSweepShift[0])+1; | ||
1006 | else mWave_Squares.nFreqTimer[0].W += | ||
1007 | (mWave_Squares.nFreqTimer[0].W >> mWave_Squares.nSweepShift[0]); | ||
1008 | |||
1009 | Wave_Squares_CheckSweepForcedSilence(0); | ||
1010 | } | ||
1011 | |||
1012 | /* */ | ||
1013 | other_square: | ||
1014 | if(mWave_Squares.bLengthEnabled[1] && mWave_Squares.nLengthCount[1]) | ||
1015 | mWave_Squares.nLengthCount[1]--; | ||
1016 | |||
1017 | if(!mWave_Squares.bSweepEnable[1] || !mWave_Squares.nLengthCount[1] || | ||
1018 | mWave_Squares.bSweepForceSilence[1] || !mWave_Squares.nSweepShift[1]) | ||
1019 | return; | ||
1020 | |||
1021 | if(mWave_Squares.nSweepCount[1]) | ||
1022 | mWave_Squares.nSweepCount[1]--; | ||
1023 | else | ||
1024 | { | ||
1025 | mWave_Squares.nSweepCount[1] = mWave_Squares.nSweepTimer[1]; | ||
1026 | if(mWave_Squares.bSweepMode[1]) mWave_Squares.nFreqTimer[1].W -= | ||
1027 | (mWave_Squares.nFreqTimer[1].W >> mWave_Squares.nSweepShift[1]); | ||
1028 | else mWave_Squares.nFreqTimer[1].W += | ||
1029 | (mWave_Squares.nFreqTimer[1].W >> mWave_Squares.nSweepShift[1]); | ||
1030 | |||
1031 | Wave_Squares_CheckSweepForcedSilence(1); | ||
1032 | } | ||
1033 | } | ||
1034 | |||
1035 | /****************** Triangle/noise/DMC ******************/ | ||
1036 | |||
1037 | /* decay (noise), linear (tri) */ | ||
1038 | |||
1039 | #ifdef ICODE_INSTEAD_OF_INLINE | ||
1040 | void Wave_TND_ClockMajor(void) ICODE_ATTR; | ||
1041 | void Wave_TND_ClockMajor() | ||
1042 | #else | ||
1043 | inline void Wave_TND_ClockMajor(void); | ||
1044 | inline void Wave_TND_ClockMajor() | ||
1045 | #endif | ||
1046 | { | ||
1047 | /* noise's decay */ | ||
1048 | if(mWave_TND.nNoiseDecayCount) | ||
1049 | mWave_TND.nNoiseDecayCount--; | ||
1050 | else | ||
1051 | { | ||
1052 | mWave_TND.nNoiseDecayCount = mWave_TND.nNoiseDecayTimer; | ||
1053 | if(mWave_TND.nNoiseDecayVolume) | ||
1054 | mWave_TND.nNoiseDecayVolume--; | ||
1055 | else | ||
1056 | { | ||
1057 | if(mWave_TND.bNoiseDecayLoop) | ||
1058 | mWave_TND.nNoiseDecayVolume = 0x0F; | ||
1059 | } | ||
1060 | |||
1061 | if(mWave_TND.bNoiseDecayEnable) | ||
1062 | mWave_TND.nNoiseVolume = mWave_TND.nNoiseDecayVolume; | ||
1063 | } | ||
1064 | |||
1065 | /* triangle's linear */ | ||
1066 | if(mWave_TND.bTriLinearHalt) | ||
1067 | mWave_TND.nTriLinearCount = mWave_TND.nTriLinearLoad; | ||
1068 | else if(mWave_TND.nTriLinearCount) | ||
1069 | mWave_TND.nTriLinearCount--; | ||
1070 | |||
1071 | if(!mWave_TND.bTriLinearControl) | ||
1072 | mWave_TND.bTriLinearHalt = 0; | ||
1073 | } | ||
1074 | |||
1075 | /* length */ | ||
1076 | |||
1077 | #ifdef ICODE_INSTEAD_OF_INLINE | ||
1078 | void Wave_TND_ClockMinor(void) ICODE_ATTR; | ||
1079 | void Wave_TND_ClockMinor() | ||
1080 | #else | ||
1081 | inline void Wave_TND_ClockMinor(void); | ||
1082 | inline void Wave_TND_ClockMinor() | ||
1083 | #endif | ||
1084 | { | ||
1085 | if(mWave_TND.bNoiseLengthEnabled && mWave_TND.nNoiseLengthCount) | ||
1086 | mWave_TND.nNoiseLengthCount--; | ||
1087 | |||
1088 | if(mWave_TND.bTriLengthEnabled && mWave_TND.nTriLengthCount) | ||
1089 | mWave_TND.nTriLengthCount--; | ||
1090 | } | ||
1091 | |||
1092 | /*#undef this*/ | ||
1093 | |||
1094 | /****************** NSF Core ******************/ | ||
1095 | |||
1096 | /* start globals */ | ||
1097 | /* | ||
1098 | * Initialization flags (TODO: make extinct) | ||
1099 | */ | ||
1100 | uint8_t bMemoryOK; /* did memory get allocated ok? */ | ||
1101 | uint8_t bFileLoaded; /* is a file loaded? */ | ||
1102 | uint8_t bTrackSelected; /* did they select a track? */ | ||
1103 | uint8_t bIsGeneratingSamples; /* currently generating samples... */ | ||
1104 | |||
1105 | /* | ||
1106 | * Memory | ||
1107 | */ | ||
1108 | /* RAM: 0x0000 - 0x07FF */ | ||
1109 | uint8_t pRAM[0x800] IDATA_ATTR; | ||
1110 | /* SRAM: 0x6000 - 0x7FFF (non-FDS only) */ | ||
1111 | uint8_t pSRAM[0x2000]; | ||
1112 | /* ExRAM: 0x5C00 - 0x5FF5 (MMC5 only) | ||
1113 | * Also holds NSF player code (at 0x5000 - 0x500F) */ | ||
1114 | uint8_t pExRAM[0x1000]; | ||
1115 | /* Full ROM buffer */ | ||
1116 | uint8_t* pROM_Full IDATA_ATTR; | ||
1117 | |||
1118 | uint16_t main_nOutputTable_L[0x8000]; | ||
1119 | |||
1120 | uint8_t* pROM[10] IDATA_ATTR;/* ROM banks (point to areas in pROM_Full) */ | ||
1121 | /* 0x8000 - 0xFFFF */ | ||
1122 | /* also includes 0x6000 - 0x7FFF (FDS only) */ | ||
1123 | uint8_t* pStack; /* the stack (points to areas in pRAM) */ | ||
1124 | /* 0x0100 - 0x01FF */ | ||
1125 | |||
1126 | int32_t nROMSize; /* size of this ROM file in bytes */ | ||
1127 | int32_t nROMBankCount; /* max number of 4k banks */ | ||
1128 | int32_t nROMMaxSize; /* size of allocated pROM_Full buffer */ | ||
1129 | |||
1130 | /* | ||
1131 | * Memory Proc Pointers | ||
1132 | */ | ||
1133 | |||
1134 | typedef uint8_t ( *ReadProc)(uint16_t); | ||
1135 | typedef void ( *WriteProc)(uint16_t,uint8_t); | ||
1136 | ReadProc ReadMemory[0x10] IDATA_ATTR; | ||
1137 | WriteProc WriteMemory[0x10] IDATA_ATTR; | ||
1138 | |||
1139 | /* | ||
1140 | * 6502 Registers / Mode | ||
1141 | */ | ||
1142 | |||
1143 | uint8_t regA IDATA_ATTR; /* Accumulator */ | ||
1144 | uint8_t regX IDATA_ATTR; /* X-Index */ | ||
1145 | uint8_t regY IDATA_ATTR; /* Y-Index */ | ||
1146 | uint8_t regP IDATA_ATTR; /* Processor Status */ | ||
1147 | uint8_t regSP IDATA_ATTR; /* Stack Pointer */ | ||
1148 | uint16_t regPC IDATA_ATTR; /* Program Counter */ | ||
1149 | |||
1150 | uint8_t bPALMode IDATA_ATTR;/* 1 if in PAL emulation mode, 0 if in NTSC */ | ||
1151 | uint8_t bCPUJammed IDATA_ATTR; /* 0 = not jammed. 1 = really jammed. | ||
1152 | * 2 = 'fake' jammed */ | ||
1153 | /* fake jam caused by the NSF code to signal | ||
1154 | * the end of the play/init routine */ | ||
1155 | |||
1156 | /* Multiplication Register, for MMC5 chip only (5205+5206) */ | ||
1157 | uint8_t nMultIn_Low; | ||
1158 | uint8_t nMultIn_High; | ||
1159 | |||
1160 | /* | ||
1161 | * NSF Preparation Information | ||
1162 | */ | ||
1163 | |||
1164 | uint8_t nBankswitchInitValues[10]; /* banks to swap to on tune init */ | ||
1165 | uint16_t nPlayAddress; /* Play routine address */ | ||
1166 | uint16_t nInitAddress; /* Init routine address */ | ||
1167 | |||
1168 | uint8_t nExternalSound; /* external sound chips */ | ||
1169 | uint8_t nCurTrack; | ||
1170 | |||
1171 | float fNSFPlaybackSpeed; | ||
1172 | |||
1173 | /* | ||
1174 | * pAPU | ||
1175 | */ | ||
1176 | |||
1177 | uint8_t nFrameCounter; /* Frame Sequence Counter */ | ||
1178 | uint8_t nFrameCounterMax; /* Frame Sequence Counter Size | ||
1179 | (3 or 4 depending on $4017.7) */ | ||
1180 | uint8_t bFrameIRQEnabled; /* TRUE if frame IRQs are enabled */ | ||
1181 | uint8_t bFrameIRQPending; /* TRUE if the frame sequencer is holding down | ||
1182 | an IRQ */ | ||
1183 | |||
1184 | uint8_t nFME07_Address; | ||
1185 | |||
1186 | /* | ||
1187 | * Timing and Counters | ||
1188 | */ | ||
1189 | /* fixed point -15.16 */ | ||
1190 | |||
1191 | int32_t nTicksUntilNextFrame; | ||
1192 | int32_t nTicksPerPlay; | ||
1193 | int32_t nTicksUntilNextPlay; | ||
1194 | int32_t nTicksPerSample; | ||
1195 | int32_t nTicksUntilNextSample; | ||
1196 | |||
1197 | uint32_t nCPUCycle IDATA_ATTR; | ||
1198 | uint32_t nAPUCycle IDATA_ATTR; | ||
1199 | |||
1200 | |||
1201 | uint32_t nTotalPlays; /* number of times the play subroutine has been called | ||
1202 | (for tracking output time) */ | ||
1203 | /* | ||
1204 | * Silence Tracker | ||
1205 | */ | ||
1206 | int32_t nSilentSamples; | ||
1207 | int32_t nSilentSampleMax; | ||
1208 | int32_t nSilenceTrackMS; | ||
1209 | uint8_t bNoSilenceIfTime; | ||
1210 | uint8_t bTimeNotDefault; | ||
1211 | |||
1212 | /* | ||
1213 | * Sound output options | ||
1214 | */ | ||
1215 | const int32_t nSampleRate=44100; | ||
1216 | |||
1217 | /* | ||
1218 | * Volume/fading/filter tracking | ||
1219 | */ | ||
1220 | |||
1221 | uint32_t nStartFade; /* play call to start fading out */ | ||
1222 | uint32_t nEndFade; /* play call to stop fading out (song is over) */ | ||
1223 | uint8_t bFade; /* are we fading? */ | ||
1224 | float fFadeVolume; | ||
1225 | float fFadeChange; | ||
1226 | |||
1227 | /* | ||
1228 | * Designated Output Buffer | ||
1229 | */ | ||
1230 | uint8_t* pOutput IDATA_ATTR; | ||
1231 | |||
1232 | const uint8_t bDMCPopReducer=1; | ||
1233 | uint8_t nDMCPop_Prev IDATA_ATTR = 0; | ||
1234 | uint8_t bDMCPop_Skip IDATA_ATTR = 0; | ||
1235 | uint8_t bDMCPop_SamePlay IDATA_ATTR = 0; | ||
1236 | |||
1237 | const uint8_t nForce4017Write=0; | ||
1238 | const uint8_t bN106PopReducer=0; | ||
1239 | const uint8_t bIgnore4011Writes=0; | ||
1240 | |||
1241 | const uint8_t bIgnoreBRK=0; | ||
1242 | const uint8_t bIgnoreIllegalOps=0; | ||
1243 | const uint8_t bNoWaitForReturn=0; | ||
1244 | const uint8_t bPALPreference=0; | ||
1245 | const uint8_t bCleanAXY=0; | ||
1246 | const uint8_t bResetDuty=0; | ||
1247 | |||
1248 | /* | ||
1249 | * Sound Filter | ||
1250 | */ | ||
1251 | |||
1252 | int64_t nFilterAccL IDATA_ATTR; | ||
1253 | int64_t nHighPass IDATA_ATTR; | ||
1254 | |||
1255 | int32_t nHighPassBase IDATA_ATTR; | ||
1256 | |||
1257 | uint8_t bHighPassEnabled IDATA_ATTR; | ||
1258 | |||
1259 | /* end globals */ | ||
1260 | |||
1261 | #define CLOCK_MAJOR() { Wave_Squares_ClockMajor(); Wave_TND_ClockMajor(); } | ||
1262 | #define CLOCK_MINOR() { Wave_Squares_ClockMinor(); Wave_TND_ClockMinor(); } | ||
1263 | |||
1264 | #define EXTSOUND_VRC6 0x01 | ||
1265 | #define EXTSOUND_VRC7 0x02 | ||
1266 | #define EXTSOUND_FDS 0x04 | ||
1267 | #define EXTSOUND_MMC5 0x08 | ||
1268 | #define EXTSOUND_N106 0x10 | ||
1269 | #define EXTSOUND_FME07 0x20 | ||
1270 | |||
1271 | #define SILENCE_THRESHOLD 3 | ||
1272 | |||
1273 | /* | ||
1274 | * prototypes | ||
1275 | */ | ||
1276 | |||
1277 | uint32_t Emulate6502(uint32_t runto) ICODE_ATTR; | ||
1278 | void EmulateAPU(uint8_t bBurnCPUCycles) ICODE_ATTR; | ||
1279 | |||
1280 | int NSFCore_Initialize(void); /* 1 = initialized ok, | ||
1281 | 0 = couldn't initialize (memory allocation error) */ | ||
1282 | |||
1283 | /* | ||
1284 | * Song Loading | ||
1285 | */ | ||
1286 | int LoadNSF(int32_t); /* grab data from an existing file | ||
1287 | 1 = loaded ok, 0 = error loading */ | ||
1288 | |||
1289 | /* | ||
1290 | * Track Control | ||
1291 | */ | ||
1292 | void SetTrack(uint8_t track); /* Change tracks */ | ||
1293 | |||
1294 | /* | ||
1295 | * Getting Samples | ||
1296 | */ | ||
1297 | /* fill a buffer with samples */ | ||
1298 | int32_t GetSamples(uint8_t* buffer, int32_t buffersize); | ||
1299 | |||
1300 | /* | ||
1301 | * Playback options | ||
1302 | */ | ||
1303 | /* Set desired playback options (0 = bad options couldn't be set) */ | ||
1304 | int SetPlaybackOptions(int32_t samplerate); | ||
1305 | /* Speed throttling (0 = uses NSF specified speed) */ | ||
1306 | void SetPlaybackSpeed(float playspersec); | ||
1307 | |||
1308 | float GetPlaybackSpeed(void); | ||
1309 | float GetMasterVolume(void); | ||
1310 | |||
1311 | /* | ||
1312 | * Seeking | ||
1313 | */ | ||
1314 | /* gets the number of 'play' routine calls executed */ | ||
1315 | float GetPlayCalls(void); | ||
1316 | |||
1317 | /* gets the output time (based on the given play rate, | ||
1318 | if basedplayspersec is zero, current playback speed is used */ | ||
1319 | uint32_t GetWrittenTime(float basedplayspersec); | ||
1320 | /* sets the number of 'plays' routines executed (for precise seeking) */ | ||
1321 | void SetPlayCalls(float plays); | ||
1322 | /* sets the written time (approx. seeking) */ | ||
1323 | void SetWrittenTime(uint32_t ms,float basedplays); | ||
1324 | |||
1325 | /* | ||
1326 | * Fading | ||
1327 | */ | ||
1328 | |||
1329 | void StopFade(void); /* stops all fading (plays indefinitely) */ | ||
1330 | uint8_t SongCompleted(void); /* song has faded out (samples have stopped | ||
1331 | being generated) */ | ||
1332 | /* parameters are play calls */ | ||
1333 | void SetFade(int32_t fadestart,int32_t fadestop,uint8_t bNotDefault); | ||
1334 | void SetFadeTime(uint32_t fadestart,uint32_t fadestop,float basedplays, | ||
1335 | uint8_t bNotDefault); /* parameters are in milliseconds */ | ||
1336 | |||
1337 | /* | ||
1338 | * Internal Functions | ||
1339 | */ | ||
1340 | void RebuildOutputTables(void); | ||
1341 | void RecalculateFade(void); /* called when fade status is changed. */ | ||
1342 | void RecalcFilter(void); | ||
1343 | void RecalcSilenceTracker(void); | ||
1344 | |||
1345 | void WriteMemory_VRC6(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1346 | void WriteMemory_MMC5(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1347 | void WriteMemory_N106(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1348 | void WriteMemory_FME07(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1349 | |||
1350 | /* | ||
1351 | * Memory Read/Write routines | ||
1352 | */ | ||
1353 | |||
1354 | uint8_t ReadMemory_RAM(uint16_t a) ICODE_ATTR; | ||
1355 | uint8_t ReadMemory_ExRAM(uint16_t a) ICODE_ATTR; | ||
1356 | uint8_t ReadMemory_SRAM(uint16_t a) ICODE_ATTR; | ||
1357 | uint8_t ReadMemory_pAPU(uint16_t a) ICODE_ATTR; | ||
1358 | uint8_t ReadMemory_ROM(uint16_t a) ICODE_ATTR; | ||
1359 | uint8_t ReadMemory_Default(uint16_t a) ICODE_ATTR; | ||
1360 | |||
1361 | uint8_t ReadMemory_N106(uint16_t a) ICODE_ATTR; | ||
1362 | |||
1363 | void WriteMemory_RAM(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1364 | void WriteMemory_ExRAM(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1365 | void WriteMemory_SRAM(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1366 | void WriteMemory_pAPU(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1367 | void WriteMemory_FDSRAM(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1368 | void WriteMemory_Default(uint16_t a,uint8_t v) ICODE_ATTR; | ||
1369 | |||
1370 | uint8_t ReadMemory_RAM(uint16_t a) { return pRAM[a & 0x07FF]; } | ||
1371 | uint8_t ReadMemory_ExRAM(uint16_t a) { return pExRAM[a & 0x0FFF]; } | ||
1372 | uint8_t ReadMemory_SRAM(uint16_t a) { return pSRAM[a & 0x1FFF]; } | ||
1373 | uint8_t ReadMemory_ROM(uint16_t a) | ||
1374 | { return pROM[(a >> 12) - 6][a & 0x0FFF]; } | ||
1375 | uint8_t ReadMemory_Default(uint16_t a) { return (a >> 8); } | ||
1376 | |||
1377 | void WriteMemory_RAM(uint16_t a,uint8_t v) | ||
1378 | { pRAM[a & 0x07FF] = v; } | ||
1379 | void WriteMemory_ExRAM(uint16_t a,uint8_t v); | ||
1380 | void WriteMemory_SRAM(uint16_t a,uint8_t v) | ||
1381 | { pSRAM[a & 0x1FFF] = v; } | ||
1382 | void WriteMemory_FDSRAM(uint16_t a,uint8_t v) | ||
1383 | { pROM[(a >> 12) - 6][a & 0x0FFF] = v; } | ||
1384 | void WriteMemory_Default(uint16_t a,uint8_t v) { (void)a; (void)v; } | ||
1385 | |||
1386 | |||
1387 | /* Read Memory Procs */ | ||
1388 | |||
1389 | uint8_t ReadMemory_pAPU(uint16_t a) | ||
1390 | { | ||
1391 | EmulateAPU(1); | ||
1392 | |||
1393 | if(a == 0x4015) | ||
1394 | { | ||
1395 | uint8_t ret = 0; | ||
1396 | if(mWave_Squares.nLengthCount[0]) ret |= 0x01; | ||
1397 | if(mWave_Squares.nLengthCount[1]) ret |= 0x02; | ||
1398 | if(mWave_TND.nTriLengthCount) ret |= 0x04; | ||
1399 | if(mWave_TND.nNoiseLengthCount) ret |= 0x08; | ||
1400 | if(mWave_TND.nDMCBytesRemaining) ret |= 0x10; | ||
1401 | |||
1402 | if(bFrameIRQPending) ret |= 0x40; | ||
1403 | if(mWave_TND.bDMCIRQPending) ret |= 0x80; | ||
1404 | |||
1405 | bFrameIRQPending = 0; | ||
1406 | return ret; | ||
1407 | } | ||
1408 | |||
1409 | if(!(nExternalSound & EXTSOUND_FDS)) return 0x40; | ||
1410 | if(bPALMode) return 0x40; | ||
1411 | |||
1412 | if((a >= 0x4040) && (a <= 0x407F)) | ||
1413 | return mWave_FDS.nWaveTable[a & 0x3F] | 0x40; | ||
1414 | if(a == 0x4090) | ||
1415 | return (mWave_FDS.nVolEnv_Gain & 0x3F) | 0x40; | ||
1416 | if(a == 0x4092) | ||
1417 | return (mWave_FDS.nSweep_Gain & 0x3F) | 0x40; | ||
1418 | |||
1419 | return 0x40; | ||
1420 | } | ||
1421 | |||
1422 | uint8_t ReadMemory_N106(uint16_t a) | ||
1423 | { | ||
1424 | if(a != 0x4800) | ||
1425 | return ReadMemory_pAPU(a); | ||
1426 | |||
1427 | uint8_t ret = mWave_N106.nRAM[(mWave_N106.nCurrentAddress << 1)] | | ||
1428 | (mWave_N106.nRAM[(mWave_N106.nCurrentAddress << 1) + 1] << 4); | ||
1429 | if(mWave_N106.bAutoIncrement) | ||
1430 | mWave_N106.nCurrentAddress = (mWave_N106.nCurrentAddress + 1) & 0x7F; | ||
1431 | |||
1432 | return ret; | ||
1433 | } | ||
1434 | |||
1435 | |||
1436 | /* Write Memory Procs */ | ||
1437 | |||
1438 | void WriteMemory_ExRAM(uint16_t a,uint8_t v) | ||
1439 | { | ||
1440 | if(a < 0x5FF6) /* Invalid */ | ||
1441 | return; | ||
1442 | |||
1443 | a -= 0x5FF6; | ||
1444 | |||
1445 | /* Swap out banks */ | ||
1446 | |||
1447 | EmulateAPU(1); | ||
1448 | /* stop it from swapping to a bank that doesn't exist */ | ||
1449 | if(v >= nROMBankCount) | ||
1450 | v = 0; | ||
1451 | |||
1452 | pROM[a] = pROM_Full + (v << 12); | ||
1453 | |||
1454 | /* Update the DMC's DMA pointer, as well */ | ||
1455 | if(a >= 2) | ||
1456 | mWave_TND.pDMCDMAPtr[a - 2] = pROM[a]; | ||
1457 | } | ||
1458 | |||
1459 | void WriteMemory_pAPU(uint16_t a,uint8_t v) | ||
1460 | { | ||
1461 | EmulateAPU(1); | ||
1462 | switch(a) | ||
1463 | { | ||
1464 | /* Square 1 */ | ||
1465 | case 0x4000: | ||
1466 | mWave_Squares.nDutyCycle[0] = DUTY_CYCLE_TABLE[v >> 6]; | ||
1467 | mWave_Squares.bLengthEnabled[0] = | ||
1468 | !(mWave_Squares.bDecayLoop[0] = (v & 0x20)); | ||
1469 | mWave_Squares.bDecayEnable[0] = !(v & 0x10); | ||
1470 | mWave_Squares.nDecayTimer[0] = (v & 0x0F); | ||
1471 | |||
1472 | if(!mWave_Squares.bDecayEnable[0]) | ||
1473 | mWave_Squares.nVolume[0] = mWave_Squares.nDecayTimer[0]; | ||
1474 | break; | ||
1475 | |||
1476 | case 0x4001: | ||
1477 | mWave_Squares.bSweepEnable[0] = (v & 0x80); | ||
1478 | mWave_Squares.nSweepTimer[0] = (v & 0x70) >> 4; | ||
1479 | mWave_Squares.bSweepMode[0] = v & 0x08; | ||
1480 | mWave_Squares.nSweepShift[0] = v & 0x07; | ||
1481 | Wave_Squares_CheckSweepForcedSilence(0); | ||
1482 | break; | ||
1483 | |||
1484 | case 0x4002: | ||
1485 | mWave_Squares.nFreqTimer[0].B.l = v; | ||
1486 | Wave_Squares_CheckSweepForcedSilence(0); | ||
1487 | break; | ||
1488 | |||
1489 | case 0x4003: | ||
1490 | mWave_Squares.nFreqTimer[0].B.h = v & 0x07; | ||
1491 | Wave_Squares_CheckSweepForcedSilence(0); | ||
1492 | |||
1493 | mWave_Squares.nDecayVolume[0] = 0x0F; | ||
1494 | |||
1495 | if(mWave_Squares.bChannelEnabled[0]) | ||
1496 | mWave_Squares.nLengthCount[0] = LENGTH_COUNTER_TABLE[v >> 3]; | ||
1497 | |||
1498 | if(bResetDuty) | ||
1499 | mWave_Squares.nDutyCount[0] = 0; | ||
1500 | break; | ||
1501 | |||
1502 | |||
1503 | /* Square 2 */ | ||
1504 | case 0x4004: | ||
1505 | mWave_Squares.nDutyCycle[1] = DUTY_CYCLE_TABLE[v >> 6]; | ||
1506 | mWave_Squares.bLengthEnabled[1] = | ||
1507 | !(mWave_Squares.bDecayLoop[1] = (v & 0x20)); | ||
1508 | mWave_Squares.bDecayEnable[1] = !(v & 0x10); | ||
1509 | mWave_Squares.nDecayTimer[1] = (v & 0x0F); | ||
1510 | |||
1511 | if(!mWave_Squares.bDecayEnable[1]) | ||
1512 | mWave_Squares.nVolume[1] = mWave_Squares.nDecayTimer[1]; | ||
1513 | break; | ||
1514 | |||
1515 | case 0x4005: | ||
1516 | mWave_Squares.bSweepEnable[1] = (v & 0x80); | ||
1517 | mWave_Squares.nSweepTimer[1] = (v & 0x70) >> 4; | ||
1518 | mWave_Squares.bSweepMode[1] = v & 0x08; | ||
1519 | mWave_Squares.nSweepShift[1] = v & 0x07; | ||
1520 | Wave_Squares_CheckSweepForcedSilence(1); | ||
1521 | break; | ||
1522 | |||
1523 | case 0x4006: | ||
1524 | mWave_Squares.nFreqTimer[1].B.l = v; | ||
1525 | Wave_Squares_CheckSweepForcedSilence(1); | ||
1526 | break; | ||
1527 | |||
1528 | case 0x4007: | ||
1529 | mWave_Squares.nFreqTimer[1].B.h = v & 0x07; | ||
1530 | Wave_Squares_CheckSweepForcedSilence(1); | ||
1531 | |||
1532 | mWave_Squares.nDecayVolume[1] = 0x0F; | ||
1533 | |||
1534 | if(mWave_Squares.bChannelEnabled[1]) | ||
1535 | mWave_Squares.nLengthCount[1] = LENGTH_COUNTER_TABLE[v >> 3]; | ||
1536 | |||
1537 | if(bResetDuty) | ||
1538 | mWave_Squares.nDutyCount[1] = 0; | ||
1539 | break; | ||
1540 | |||
1541 | |||
1542 | /* Triangle */ | ||
1543 | case 0x4008: | ||
1544 | mWave_TND.nTriLinearLoad = v & 0x7F; | ||
1545 | mWave_TND.bTriLinearControl = v & 0x80; | ||
1546 | mWave_TND.bTriLengthEnabled = !(v & 0x80); | ||
1547 | break; | ||
1548 | |||
1549 | case 0x400A: | ||
1550 | mWave_TND.nTriFreqTimer.B.l = v; | ||
1551 | break; | ||
1552 | |||
1553 | case 0x400B: | ||
1554 | mWave_TND.nTriFreqTimer.B.h = v & 0x07; | ||
1555 | mWave_TND.bTriLinearHalt = 1; | ||
1556 | |||
1557 | if(mWave_TND.bTriChannelEnabled) | ||
1558 | mWave_TND.nTriLengthCount = LENGTH_COUNTER_TABLE[v >> 3]; | ||
1559 | break; | ||
1560 | |||
1561 | /* Noise */ | ||
1562 | case 0x400C: | ||
1563 | mWave_TND.bNoiseLengthEnabled = | ||
1564 | !(mWave_TND.bNoiseDecayLoop = (v & 0x20)); | ||
1565 | mWave_TND.bNoiseDecayEnable = !(v & 0x10); | ||
1566 | mWave_TND.nNoiseDecayTimer = (v & 0x0F); | ||
1567 | |||
1568 | if(mWave_TND.bNoiseDecayEnable) | ||
1569 | mWave_TND.nNoiseVolume = mWave_TND.nNoiseDecayVolume; | ||
1570 | else | ||
1571 | mWave_TND.nNoiseVolume = mWave_TND.nNoiseDecayTimer; | ||
1572 | break; | ||
1573 | |||
1574 | case 0x400E: | ||
1575 | mWave_TND.nNoiseFreqTimer = NOISE_FREQ_TABLE[v & 0x0F]; | ||
1576 | mWave_TND.bNoiseRandomMode = (v & 0x80) ? 6 : 1; | ||
1577 | break; | ||
1578 | |||
1579 | case 0x400F: | ||
1580 | if(mWave_TND.bNoiseChannelEnabled) | ||
1581 | mWave_TND.nNoiseLengthCount = LENGTH_COUNTER_TABLE[v >> 3]; | ||
1582 | |||
1583 | mWave_TND.nNoiseDecayVolume = 0x0F; | ||
1584 | if(mWave_TND.bNoiseDecayEnable) | ||
1585 | mWave_TND.nNoiseVolume = 0x0F; | ||
1586 | break; | ||
1587 | |||
1588 | /* DMC */ | ||
1589 | case 0x4010: | ||
1590 | mWave_TND.bDMCLoop = v & 0x40; | ||
1591 | mWave_TND.bDMCIRQEnabled = v & 0x80; | ||
1592 | /* IRQ can't be pending if disabled */ | ||
1593 | if(!mWave_TND.bDMCIRQEnabled) | ||
1594 | mWave_TND.bDMCIRQPending = 0; | ||
1595 | |||
1596 | mWave_TND.nDMCFreqTimer = DMC_FREQ_TABLE[bPALMode][v & 0x0F]; | ||
1597 | break; | ||
1598 | |||
1599 | case 0x4011: | ||
1600 | if(bIgnore4011Writes) | ||
1601 | break; | ||
1602 | v &= 0x7F; | ||
1603 | if(bDMCPopReducer) | ||
1604 | { | ||
1605 | if(bDMCPop_SamePlay) | ||
1606 | mWave_TND.nDMCOutput = v; | ||
1607 | else | ||
1608 | { | ||
1609 | if(bDMCPop_Skip) | ||
1610 | { | ||
1611 | bDMCPop_Skip = 0; | ||
1612 | break; | ||
1613 | } | ||
1614 | if(nDMCPop_Prev == v) break; | ||
1615 | if(mWave_TND.nDMCOutput == v) break; | ||
1616 | mWave_TND.nDMCOutput = nDMCPop_Prev; | ||
1617 | nDMCPop_Prev = v; | ||
1618 | bDMCPop_SamePlay = 1; | ||
1619 | } | ||
1620 | } | ||
1621 | else | ||
1622 | mWave_TND.nDMCOutput = v; | ||
1623 | break; | ||
1624 | |||
1625 | case 0x4012: | ||
1626 | mWave_TND.nDMCDMABank_Load = (v >> 6) | 0x04; | ||
1627 | mWave_TND.nDMCDMAAddr_Load = (v << 6) & 0x0FFF; | ||
1628 | break; | ||
1629 | |||
1630 | case 0x4013: | ||
1631 | mWave_TND.nDMCLength = (v << 4) + 1; | ||
1632 | break; | ||
1633 | |||
1634 | /* All / General Purpose */ | ||
1635 | case 0x4015: | ||
1636 | mWave_TND.bDMCIRQPending = 0; | ||
1637 | |||
1638 | if(v & 0x01){ mWave_Squares.bChannelEnabled[0] = 1; } | ||
1639 | else { mWave_Squares.bChannelEnabled[0] = | ||
1640 | mWave_Squares.nLengthCount[0] = 0; } | ||
1641 | if(v & 0x02){ mWave_Squares.bChannelEnabled[1] = 1; } | ||
1642 | else { mWave_Squares.bChannelEnabled[1] = | ||
1643 | mWave_Squares.nLengthCount[1] = 0; } | ||
1644 | if(v & 0x04){ mWave_TND.bTriChannelEnabled = 1; } | ||
1645 | else { mWave_TND.bTriChannelEnabled = | ||
1646 | mWave_TND.nTriLengthCount = 0; } | ||
1647 | if(v & 0x08){ mWave_TND.bNoiseChannelEnabled = 1; } | ||
1648 | else { mWave_TND.bNoiseChannelEnabled = | ||
1649 | mWave_TND.nNoiseLengthCount = 0; } | ||
1650 | |||
1651 | if(v & 0x10) | ||
1652 | { | ||
1653 | if(!mWave_TND.nDMCBytesRemaining) | ||
1654 | { | ||
1655 | bDMCPop_Skip = 1; | ||
1656 | mWave_TND.nDMCDMAAddr = mWave_TND.nDMCDMAAddr_Load; | ||
1657 | mWave_TND.nDMCDMABank = mWave_TND.nDMCDMABank_Load; | ||
1658 | mWave_TND.nDMCBytesRemaining = mWave_TND.nDMCLength; | ||
1659 | mWave_TND.bDMCActive = 1; | ||
1660 | } | ||
1661 | } | ||
1662 | else | ||
1663 | mWave_TND.nDMCBytesRemaining = 0; | ||
1664 | break; | ||
1665 | |||
1666 | case 0x4017: | ||
1667 | bFrameIRQEnabled = !(v & 0x40); | ||
1668 | bFrameIRQPending = 0; | ||
1669 | nFrameCounter = 0; | ||
1670 | nFrameCounterMax = (v & 0x80) ? 4 : 3; | ||
1671 | nTicksUntilNextFrame = | ||
1672 | (bPALMode ? PAL_FRAME_COUNTER_FREQ : NTSC_FRAME_COUNTER_FREQ) | ||
1673 | * 0x10000; | ||
1674 | |||
1675 | CLOCK_MAJOR(); | ||
1676 | if(v & 0x80) CLOCK_MINOR(); | ||
1677 | break; | ||
1678 | } | ||
1679 | |||
1680 | if(!(nExternalSound & EXTSOUND_FDS)) return; | ||
1681 | if(bPALMode) return; | ||
1682 | |||
1683 | /* FDS Sound registers */ | ||
1684 | |||
1685 | if(a < 0x4040) return; | ||
1686 | |||
1687 | /* wave table */ | ||
1688 | if(a <= 0x407F) | ||
1689 | { | ||
1690 | if(mWave_FDS.bWaveWrite) | ||
1691 | mWave_FDS.nWaveTable[a - 0x4040] = v; | ||
1692 | } | ||
1693 | else | ||
1694 | { | ||
1695 | switch(a) | ||
1696 | { | ||
1697 | case 0x4080: | ||
1698 | mWave_FDS.nVolEnv_Mode = (v >> 6); | ||
1699 | if(v & 0x80) | ||
1700 | { | ||
1701 | mWave_FDS.nVolEnv_Gain = v & 0x3F; | ||
1702 | if(!mWave_FDS.nMainAddr) | ||
1703 | { | ||
1704 | if(mWave_FDS.nVolEnv_Gain < 0x20) | ||
1705 | mWave_FDS.nVolume = mWave_FDS.nVolEnv_Gain; | ||
1706 | else mWave_FDS.nVolume = 0x20; | ||
1707 | } | ||
1708 | } | ||
1709 | mWave_FDS.nVolEnv_Decay = v & 0x3F; | ||
1710 | mWave_FDS.nVolEnv_Timer = | ||
1711 | ((mWave_FDS.nVolEnv_Decay + 1) * mWave_FDS.nEnvelopeSpeed * 8); | ||
1712 | |||
1713 | mWave_FDS.bVolEnv_On = mWave_FDS.bEnvelopeEnable && | ||
1714 | mWave_FDS.nEnvelopeSpeed && !(v & 0x80); | ||
1715 | break; | ||
1716 | |||
1717 | case 0x4082: | ||
1718 | mWave_FDS.nFreq.B.l = v; | ||
1719 | mWave_FDS.bMain_On = mWave_FDS.nFreq.W && mWave_FDS.bEnabled && | ||
1720 | !mWave_FDS.bWaveWrite; | ||
1721 | break; | ||
1722 | |||
1723 | case 0x4083: | ||
1724 | mWave_FDS.bEnabled = !(v & 0x80); | ||
1725 | mWave_FDS.bEnvelopeEnable = !(v & 0x40); | ||
1726 | if(v & 0x80) | ||
1727 | { | ||
1728 | if(mWave_FDS.nVolEnv_Gain < 0x20) | ||
1729 | mWave_FDS.nVolume = mWave_FDS.nVolEnv_Gain; | ||
1730 | else mWave_FDS.nVolume = 0x20; | ||
1731 | } | ||
1732 | mWave_FDS.nFreq.B.h = v & 0x0F; | ||
1733 | mWave_FDS.bMain_On = mWave_FDS.nFreq.W && mWave_FDS.bEnabled && | ||
1734 | !mWave_FDS.bWaveWrite; | ||
1735 | |||
1736 | mWave_FDS.bVolEnv_On = mWave_FDS.bEnvelopeEnable && | ||
1737 | mWave_FDS.nEnvelopeSpeed && !(mWave_FDS.nVolEnv_Mode & 2); | ||
1738 | mWave_FDS.bSweepEnv_On = mWave_FDS.bEnvelopeEnable && | ||
1739 | mWave_FDS.nEnvelopeSpeed && !(mWave_FDS.nSweep_Mode & 2); | ||
1740 | break; | ||
1741 | |||
1742 | |||
1743 | case 0x4084: | ||
1744 | mWave_FDS.nSweep_Mode = v >> 6; | ||
1745 | if(v & 0x80) | ||
1746 | mWave_FDS.nSweep_Gain = v & 0x3F; | ||
1747 | mWave_FDS.nSweep_Decay = v & 0x3F; | ||
1748 | mWave_FDS.nSweep_Timer = | ||
1749 | ((mWave_FDS.nSweep_Decay + 1) * mWave_FDS.nEnvelopeSpeed * 8); | ||
1750 | mWave_FDS.bSweepEnv_On = | ||
1751 | mWave_FDS.bEnvelopeEnable && mWave_FDS.nEnvelopeSpeed && | ||
1752 | !(v & 0x80); | ||
1753 | break; | ||
1754 | |||
1755 | |||
1756 | case 0x4085: | ||
1757 | if(v & 0x40) mWave_FDS.nSweepBias = (v & 0x3F) - 0x40; | ||
1758 | else mWave_FDS.nSweepBias = v & 0x3F; | ||
1759 | mWave_FDS.nLFO_Addr = 0; | ||
1760 | break; | ||
1761 | |||
1762 | |||
1763 | case 0x4086: | ||
1764 | mWave_FDS.nLFO_Freq.B.l = v; | ||
1765 | mWave_FDS.bLFO_On = | ||
1766 | mWave_FDS.bLFO_Enabled && mWave_FDS.nLFO_Freq.W; | ||
1767 | if(mWave_FDS.nLFO_Freq.W) | ||
1768 | mWave_FDS.nLFO_Timer = (0x10000<<14) / mWave_FDS.nLFO_Freq.W; | ||
1769 | break; | ||
1770 | |||
1771 | case 0x4087: | ||
1772 | mWave_FDS.bLFO_Enabled = !(v & 0x80); | ||
1773 | mWave_FDS.nLFO_Freq.B.h = v & 0x0F; | ||
1774 | mWave_FDS.bLFO_On = | ||
1775 | mWave_FDS.bLFO_Enabled && mWave_FDS.nLFO_Freq.W; | ||
1776 | if(mWave_FDS.nLFO_Freq.W) | ||
1777 | mWave_FDS.nLFO_Timer = (0x10000<<14) / mWave_FDS.nLFO_Freq.W; | ||
1778 | break; | ||
1779 | |||
1780 | case 0x4088: | ||
1781 | if(mWave_FDS.bLFO_Enabled) break; | ||
1782 | register int32_t i; | ||
1783 | for(i = 0; i < 62; i++) | ||
1784 | mWave_FDS.nLFO_Table[i] = mWave_FDS.nLFO_Table[i + 2]; | ||
1785 | mWave_FDS.nLFO_Table[62] = mWave_FDS.nLFO_Table[63] = v & 7; | ||
1786 | break; | ||
1787 | |||
1788 | case 0x4089: | ||
1789 | mWave_FDS.nMainVolume = v & 3; | ||
1790 | mWave_FDS.bWaveWrite = v & 0x80; | ||
1791 | mWave_FDS.bMain_On = mWave_FDS.nFreq.W && mWave_FDS.bEnabled && | ||
1792 | !mWave_FDS.bWaveWrite; | ||
1793 | break; | ||
1794 | |||
1795 | case 0x408A: | ||
1796 | mWave_FDS.nEnvelopeSpeed = v; | ||
1797 | mWave_FDS.bVolEnv_On = | ||
1798 | mWave_FDS.bEnvelopeEnable && | ||
1799 | mWave_FDS.nEnvelopeSpeed && !(mWave_FDS.nVolEnv_Mode & 2); | ||
1800 | mWave_FDS.bSweepEnv_On = | ||
1801 | mWave_FDS.bEnvelopeEnable && | ||
1802 | mWave_FDS.nEnvelopeSpeed && !(mWave_FDS.nSweep_Mode & 2); | ||
1803 | break; | ||
1804 | } | ||
1805 | } | ||
1806 | } | ||
1807 | |||
1808 | void WriteMemory_VRC6(uint16_t a,uint8_t v) | ||
1809 | { | ||
1810 | EmulateAPU(1); | ||
1811 | |||
1812 | if((a < 0xA000) && (nExternalSound & EXTSOUND_VRC7)) return; | ||
1813 | else if(nExternalSound & EXTSOUND_FDS) | ||
1814 | WriteMemory_FDSRAM(a,v); | ||
1815 | |||
1816 | switch(a) | ||
1817 | { | ||
1818 | /* Pulse 1 */ | ||
1819 | case 0x9000: | ||
1820 | mWave_VRC6Pulse[0].nVolume = v & 0x0F; | ||
1821 | mWave_VRC6Pulse[0].nDutyCycle = (v >> 4) & 0x07; | ||
1822 | mWave_VRC6Pulse[0].bDigitized = v & 0x80; | ||
1823 | if(mWave_VRC6Pulse[0].bDigitized) | ||
1824 | mWave_VRC6Pulse[0].nDutyCount = 0; | ||
1825 | break; | ||
1826 | |||
1827 | case 0x9001: | ||
1828 | mWave_VRC6Pulse[0].nFreqTimer.B.l = v; | ||
1829 | break; | ||
1830 | |||
1831 | case 0x9002: | ||
1832 | mWave_VRC6Pulse[0].nFreqTimer.B.h = v & 0x0F; | ||
1833 | mWave_VRC6Pulse[0].bChannelEnabled = v & 0x80; | ||
1834 | break; | ||
1835 | |||
1836 | |||
1837 | /* Pulse 2 */ | ||
1838 | case 0xA000: | ||
1839 | mWave_VRC6Pulse[1].nVolume = v & 0x0F; | ||
1840 | mWave_VRC6Pulse[1].nDutyCycle = (v >> 4) & 0x07; | ||
1841 | mWave_VRC6Pulse[1].bDigitized = v & 0x80; | ||
1842 | if(mWave_VRC6Pulse[1].bDigitized) | ||
1843 | mWave_VRC6Pulse[1].nDutyCount = 0; | ||
1844 | break; | ||
1845 | |||
1846 | case 0xA001: | ||
1847 | mWave_VRC6Pulse[1].nFreqTimer.B.l = v; | ||
1848 | break; | ||
1849 | |||
1850 | case 0xA002: | ||
1851 | mWave_VRC6Pulse[1].nFreqTimer.B.h = v & 0x0F; | ||
1852 | mWave_VRC6Pulse[1].bChannelEnabled = v & 0x80; | ||
1853 | break; | ||
1854 | |||
1855 | /* Sawtooth */ | ||
1856 | case 0xB000: | ||
1857 | mWave_VRC6Saw.nAccumRate = (v & 0x3F); | ||
1858 | break; | ||
1859 | |||
1860 | case 0xB001: | ||
1861 | mWave_VRC6Saw.nFreqTimer.B.l = v; | ||
1862 | break; | ||
1863 | |||
1864 | case 0xB002: | ||
1865 | mWave_VRC6Saw.nFreqTimer.B.h = v & 0x0F; | ||
1866 | mWave_VRC6Saw.bChannelEnabled = v & 0x80; | ||
1867 | break; | ||
1868 | } | ||
1869 | } | ||
1870 | |||
1871 | void WriteMemory_MMC5(uint16_t a,uint8_t v) | ||
1872 | { | ||
1873 | if((a <= 0x5015) && !bPALMode) | ||
1874 | { | ||
1875 | /* no audio emulation */ | ||
1876 | return; | ||
1877 | } | ||
1878 | |||
1879 | if(a == 0x5205) | ||
1880 | { | ||
1881 | nMultIn_Low = v; | ||
1882 | goto multiply; | ||
1883 | } | ||
1884 | if(a == 0x5206) | ||
1885 | { | ||
1886 | nMultIn_High = v; | ||
1887 | multiply: | ||
1888 | a = nMultIn_Low * nMultIn_High; | ||
1889 | pExRAM[0x205] = a & 0xFF; | ||
1890 | pExRAM[0x206] = a >> 8; | ||
1891 | return; | ||
1892 | } | ||
1893 | |||
1894 | if(a < 0x5C00) return; | ||
1895 | |||
1896 | pExRAM[a & 0x0FFF] = v; | ||
1897 | if(a >= 0x5FF6) | ||
1898 | WriteMemory_ExRAM(a,v); | ||
1899 | } | ||
1900 | |||
1901 | void WriteMemory_N106(uint16_t a,uint8_t v) | ||
1902 | { | ||
1903 | if(a < 0x4800) | ||
1904 | { | ||
1905 | WriteMemory_pAPU(a,v); | ||
1906 | return; | ||
1907 | } | ||
1908 | |||
1909 | if(a == 0xF800) | ||
1910 | { | ||
1911 | mWave_N106.nCurrentAddress = v & 0x7F; | ||
1912 | mWave_N106.bAutoIncrement = (v & 0x80); | ||
1913 | return; | ||
1914 | } | ||
1915 | |||
1916 | if(a == 0x4800) | ||
1917 | { | ||
1918 | EmulateAPU(1); | ||
1919 | mWave_N106.nRAM[mWave_N106.nCurrentAddress << 1] = v & 0x0F; | ||
1920 | mWave_N106.nRAM[(mWave_N106.nCurrentAddress << 1) + 1] = v >> 4; | ||
1921 | a = mWave_N106.nCurrentAddress; | ||
1922 | if(mWave_N106.bAutoIncrement) | ||
1923 | mWave_N106.nCurrentAddress = | ||
1924 | (mWave_N106.nCurrentAddress + 1) & 0x7F; | ||
1925 | |||
1926 | #define N106REGWRITE(ch,r0,r1,r2,r3,r4) \ | ||
1927 | case r0: if(mWave_N106.nFreqReg[ch].B.l == v) break; \ | ||
1928 | mWave_N106.nFreqReg[ch].B.l = v; \ | ||
1929 | mWave_N106.fFreqTimer[ch] = -1.0f; \ | ||
1930 | break; \ | ||
1931 | case r1: if(mWave_N106.nFreqReg[ch].B.h == v) break; \ | ||
1932 | mWave_N106.nFreqReg[ch].B.h = v; \ | ||
1933 | mWave_N106.fFreqTimer[ch] = -1.0f; \ | ||
1934 | break; \ | ||
1935 | case r2: if(mWave_N106.nFreqReg[ch].B.w != (v & 3)){ \ | ||
1936 | mWave_N106.nFreqReg[ch].B.w = v & 0x03; \ | ||
1937 | mWave_N106.fFreqTimer[ch] = -1.0f;} \ | ||
1938 | mWave_N106.nWaveSize[ch] = 0x20 - (v & 0x1C); \ | ||
1939 | break; \ | ||
1940 | case r3: mWave_N106.nWavePosStart[ch] = v; \ | ||
1941 | break; \ | ||
1942 | case r4: mWave_N106.nPreVolume[ch] = v & 0x0F; \ | ||
1943 | if(!bN106PopReducer) \ | ||
1944 | mWave_N106.nVolume[ch] = v & 0x0F | ||
1945 | |||
1946 | switch(a) | ||
1947 | { | ||
1948 | N106REGWRITE(0,0x40,0x42,0x44,0x46,0x47); break; | ||
1949 | N106REGWRITE(1,0x48,0x4A,0x4C,0x4E,0x4F); break; | ||
1950 | N106REGWRITE(2,0x50,0x52,0x54,0x56,0x57); break; | ||
1951 | N106REGWRITE(3,0x58,0x5A,0x5C,0x5E,0x5F); break; | ||
1952 | N106REGWRITE(4,0x60,0x62,0x64,0x66,0x67); break; | ||
1953 | N106REGWRITE(5,0x68,0x6A,0x6C,0x6E,0x6F); break; | ||
1954 | N106REGWRITE(6,0x70,0x72,0x74,0x76,0x77); break; | ||
1955 | N106REGWRITE(7,0x78,0x7A,0x7C,0x7E,0x7F); | ||
1956 | v = (v >> 4) & 7; | ||
1957 | if(mWave_N106.nActiveChannels == v) break; | ||
1958 | mWave_N106.nActiveChannels = v; | ||
1959 | mWave_N106.fFreqTimer[0] = -1.0f; | ||
1960 | mWave_N106.fFreqTimer[1] = -1.0f; | ||
1961 | mWave_N106.fFreqTimer[2] = -1.0f; | ||
1962 | mWave_N106.fFreqTimer[3] = -1.0f; | ||
1963 | mWave_N106.fFreqTimer[4] = -1.0f; | ||
1964 | mWave_N106.fFreqTimer[5] = -1.0f; | ||
1965 | mWave_N106.fFreqTimer[6] = -1.0f; | ||
1966 | mWave_N106.fFreqTimer[7] = -1.0f; | ||
1967 | break; | ||
1968 | } | ||
1969 | #undef N106REGWRITE | ||
1970 | } | ||
1971 | } | ||
1972 | |||
1973 | void WriteMemory_FME07(uint16_t a,uint8_t v) | ||
1974 | { | ||
1975 | if((a < 0xD000) && (nExternalSound & EXTSOUND_FDS)) | ||
1976 | WriteMemory_FDSRAM(a,v); | ||
1977 | |||
1978 | if(a == 0xC000) | ||
1979 | nFME07_Address = v; | ||
1980 | if(a == 0xE000) | ||
1981 | { | ||
1982 | switch(nFME07_Address) | ||
1983 | { | ||
1984 | case 0x00: mWave_FME07[0].nFreqTimer.B.l = v; break; | ||
1985 | case 0x01: mWave_FME07[0].nFreqTimer.B.h = v & 0x0F; break; | ||
1986 | case 0x02: mWave_FME07[1].nFreqTimer.B.l = v; break; | ||
1987 | case 0x03: mWave_FME07[1].nFreqTimer.B.h = v & 0x0F; break; | ||
1988 | case 0x04: mWave_FME07[2].nFreqTimer.B.l = v; break; | ||
1989 | case 0x05: mWave_FME07[2].nFreqTimer.B.h = v & 0x0F; break; | ||
1990 | case 0x07: | ||
1991 | mWave_FME07[0].bChannelEnabled = !(v & 0x01); | ||
1992 | mWave_FME07[1].bChannelEnabled = !(v & 0x02); | ||
1993 | mWave_FME07[2].bChannelEnabled = !(v & 0x03); | ||
1994 | break; | ||
1995 | case 0x08: mWave_FME07[0].nVolume = v & 0x0F; break; | ||
1996 | case 0x09: mWave_FME07[1].nVolume = v & 0x0F; break; | ||
1997 | case 0x0A: mWave_FME07[2].nVolume = v & 0x0F; break; | ||
1998 | } | ||
1999 | } | ||
2000 | } | ||
2001 | |||
2002 | /* | ||
2003 | * Emulate APU | ||
2004 | */ | ||
2005 | |||
2006 | int32_t fulltick; | ||
2007 | void EmulateAPU(uint8_t bBurnCPUCycles) | ||
2008 | { | ||
2009 | int32_t tick; | ||
2010 | int64_t diff; | ||
2011 | |||
2012 | int32_t tnd_out; | ||
2013 | uint8_t square_out; | ||
2014 | |||
2015 | ENTER_TIMER(apu); | ||
2016 | |||
2017 | fulltick += (signed)(nCPUCycle - nAPUCycle); | ||
2018 | |||
2019 | int32_t burned; | ||
2020 | int32_t mixL; | ||
2021 | |||
2022 | if(bFade && nSilentSampleMax && (nSilentSamples >= nSilentSampleMax)) | ||
2023 | fulltick = 0; | ||
2024 | |||
2025 | while(fulltick>0) | ||
2026 | { | ||
2027 | tick = (nTicksUntilNextSample+0xffff)>>16; | ||
2028 | |||
2029 | fulltick -= tick; | ||
2030 | |||
2031 | /* | ||
2032 | * Sample Generation | ||
2033 | */ | ||
2034 | |||
2035 | ENTER_TIMER(squares); | ||
2036 | /* Square generation */ | ||
2037 | |||
2038 | mWave_Squares.nFreqCount[0] -= tick; | ||
2039 | mWave_Squares.nFreqCount[1] -= tick; | ||
2040 | |||
2041 | if((mWave_Squares.nDutyCount[0] < mWave_Squares.nDutyCycle[0]) && | ||
2042 | mWave_Squares.nLengthCount[0] && | ||
2043 | !mWave_Squares.bSweepForceSilence[0]) | ||
2044 | square_out = (mWave_Squares.nVolume[0] << 4); | ||
2045 | else | ||
2046 | square_out = 0; | ||
2047 | |||
2048 | if((mWave_Squares.nDutyCount[1] < mWave_Squares.nDutyCycle[1]) && | ||
2049 | mWave_Squares.nLengthCount[1] && | ||
2050 | !mWave_Squares.bSweepForceSilence[1]) | ||
2051 | square_out |= mWave_Squares.nVolume[1]; | ||
2052 | |||
2053 | mWave_Squares.nMixL = Squares_nOutputTable_L[square_out]; | ||
2054 | |||
2055 | if(mWave_Squares.nFreqCount[0]<=0) | ||
2056 | { | ||
2057 | int cycles = | ||
2058 | (-mWave_Squares.nFreqCount[0])/ | ||
2059 | (mWave_Squares.nFreqTimer[0].W + 1) + 1; | ||
2060 | mWave_Squares.nFreqCount[0] = | ||
2061 | (mWave_Squares.nFreqTimer[0].W + 1)- | ||
2062 | (-mWave_Squares.nFreqCount[0])% | ||
2063 | (mWave_Squares.nFreqTimer[0].W + 1); | ||
2064 | mWave_Squares.nDutyCount[0] = | ||
2065 | (mWave_Squares.nDutyCount[0]+cycles)%0x10; | ||
2066 | } | ||
2067 | if(mWave_Squares.nFreqCount[1]<=0) | ||
2068 | { | ||
2069 | int cycles = | ||
2070 | (-mWave_Squares.nFreqCount[1])/ | ||
2071 | (mWave_Squares.nFreqTimer[1].W + 1) + 1; | ||
2072 | mWave_Squares.nFreqCount[1] = | ||
2073 | (mWave_Squares.nFreqTimer[1].W + 1)- | ||
2074 | (-mWave_Squares.nFreqCount[1])% | ||
2075 | (mWave_Squares.nFreqTimer[1].W + 1); | ||
2076 | mWave_Squares.nDutyCount[1] = (mWave_Squares.nDutyCount[1]+cycles)% | ||
2077 | 0x10; | ||
2078 | } | ||
2079 | /* end of Square generation */ | ||
2080 | EXIT_TIMER(squares); | ||
2081 | ENTER_TIMER(tnd); | ||
2082 | |||
2083 | ENTER_TIMER(tnd_enter); | ||
2084 | |||
2085 | burned=0; | ||
2086 | |||
2087 | /* TND generation */ | ||
2088 | |||
2089 | if(mWave_TND.nNoiseFreqTimer) mWave_TND.nNoiseFreqCount -= tick; | ||
2090 | |||
2091 | if(mWave_TND.nTriFreqTimer.W > 8) | ||
2092 | mWave_TND.nTriFreqCount -= tick; | ||
2093 | |||
2094 | tnd_out = mWave_TND.nTriOutput << 11; | ||
2095 | |||
2096 | if(mWave_TND.bNoiseRandomOut && mWave_TND.nNoiseLengthCount) | ||
2097 | tnd_out |= mWave_TND.nNoiseVolume << 7; | ||
2098 | |||
2099 | tnd_out |= mWave_TND.nDMCOutput; | ||
2100 | |||
2101 | mWave_TND.nMixL = main_nOutputTable_L[tnd_out]; | ||
2102 | |||
2103 | EXIT_TIMER(tnd_enter); | ||
2104 | |||
2105 | ENTER_TIMER(tnd_tri); | ||
2106 | |||
2107 | /* Tri */ | ||
2108 | |||
2109 | if(mWave_TND.nTriFreqCount<=0) | ||
2110 | { | ||
2111 | if(mWave_TND.nTriLengthCount && mWave_TND.nTriLinearCount) | ||
2112 | { | ||
2113 | do mWave_TND.nTriStep++; | ||
2114 | while ((mWave_TND.nTriFreqCount += | ||
2115 | mWave_TND.nTriFreqTimer.W + 1) <= 0); | ||
2116 | mWave_TND.nTriStep &= 0x1F; | ||
2117 | |||
2118 | if(mWave_TND.nTriStep & 0x10) | ||
2119 | mWave_TND.nTriOutput = mWave_TND.nTriStep ^ 0x1F; | ||
2120 | else mWave_TND.nTriOutput = mWave_TND.nTriStep; | ||
2121 | } else mWave_TND.nTriFreqCount=mWave_TND.nTriFreqTimer.W+1; | ||
2122 | } | ||
2123 | |||
2124 | EXIT_TIMER(tnd_tri); | ||
2125 | |||
2126 | ENTER_TIMER(tnd_noise); | ||
2127 | |||
2128 | /* Noise */ | ||
2129 | |||
2130 | if(mWave_TND.nNoiseFreqTimer && | ||
2131 | mWave_TND.nNoiseVolume && mWave_TND.nNoiseFreqCount<=0) | ||
2132 | { | ||
2133 | mWave_TND.nNoiseFreqCount = mWave_TND.nNoiseFreqTimer; | ||
2134 | mWave_TND.nNoiseRandomShift <<= 1; | ||
2135 | mWave_TND.bNoiseRandomOut = (((mWave_TND.nNoiseRandomShift << | ||
2136 | mWave_TND.bNoiseRandomMode) ^ | ||
2137 | mWave_TND.nNoiseRandomShift) & 0x8000 ) ? 1 : 0; | ||
2138 | if(mWave_TND.bNoiseRandomOut) | ||
2139 | mWave_TND.nNoiseRandomShift |= 0x01; | ||
2140 | } | ||
2141 | |||
2142 | EXIT_TIMER(tnd_noise); | ||
2143 | |||
2144 | ENTER_TIMER(tnd_dmc); | ||
2145 | |||
2146 | /* DMC */ | ||
2147 | if(mWave_TND.bDMCActive) | ||
2148 | { | ||
2149 | mWave_TND.nDMCFreqCount -= tick; | ||
2150 | while (mWave_TND.nDMCFreqCount <= 0) { | ||
2151 | if (!mWave_TND.bDMCActive) { | ||
2152 | mWave_TND.nDMCFreqCount = mWave_TND.nDMCFreqTimer; | ||
2153 | break; | ||
2154 | } | ||
2155 | |||
2156 | mWave_TND.nDMCFreqCount += mWave_TND.nDMCFreqTimer; | ||
2157 | |||
2158 | if(mWave_TND.bDMCSampleBufferEmpty && | ||
2159 | mWave_TND.nDMCBytesRemaining) | ||
2160 | { | ||
2161 | burned += 4; /* 4 cycle burn! */ | ||
2162 | mWave_TND.nDMCSampleBuffer = | ||
2163 | mWave_TND.pDMCDMAPtr[mWave_TND.nDMCDMABank] | ||
2164 | [mWave_TND.nDMCDMAAddr]; | ||
2165 | mWave_TND.nDMCDMAAddr++; | ||
2166 | if(mWave_TND.nDMCDMAAddr & 0x1000) | ||
2167 | { | ||
2168 | mWave_TND.nDMCDMAAddr &= 0x0FFF; | ||
2169 | mWave_TND.nDMCDMABank = | ||
2170 | (mWave_TND.nDMCDMABank + 1) & 0x07; | ||
2171 | } | ||
2172 | |||
2173 | mWave_TND.bDMCSampleBufferEmpty = 0; | ||
2174 | mWave_TND.nDMCBytesRemaining--; | ||
2175 | if(!mWave_TND.nDMCBytesRemaining) | ||
2176 | { | ||
2177 | if(mWave_TND.bDMCLoop) | ||
2178 | { | ||
2179 | mWave_TND.nDMCDMABank = mWave_TND.nDMCDMABank_Load; | ||
2180 | mWave_TND.nDMCDMAAddr = mWave_TND.nDMCDMAAddr_Load; | ||
2181 | mWave_TND.nDMCBytesRemaining =mWave_TND.nDMCLength; | ||
2182 | } | ||
2183 | else if(mWave_TND.bDMCIRQEnabled) | ||
2184 | mWave_TND.bDMCIRQPending = 1; | ||
2185 | } | ||
2186 | } | ||
2187 | |||
2188 | if(!mWave_TND.nDMCDeltaBit) | ||
2189 | { | ||
2190 | mWave_TND.nDMCDeltaBit = 8; | ||
2191 | mWave_TND.bDMCDeltaSilent =mWave_TND.bDMCSampleBufferEmpty; | ||
2192 | mWave_TND.nDMCDelta = mWave_TND.nDMCSampleBuffer; | ||
2193 | mWave_TND.bDMCSampleBufferEmpty = 1; | ||
2194 | } | ||
2195 | |||
2196 | if(mWave_TND.nDMCDeltaBit) { | ||
2197 | mWave_TND.nDMCDeltaBit--; | ||
2198 | if(!mWave_TND.bDMCDeltaSilent) | ||
2199 | { | ||
2200 | if(mWave_TND.nDMCDelta & 0x01) | ||
2201 | { | ||
2202 | if(mWave_TND.nDMCOutput < 0x7E) | ||
2203 | mWave_TND.nDMCOutput += 2; | ||
2204 | } | ||
2205 | else if(mWave_TND.nDMCOutput > 1) | ||
2206 | mWave_TND.nDMCOutput -= 2; | ||
2207 | } | ||
2208 | mWave_TND.nDMCDelta >>= 1; | ||
2209 | } | ||
2210 | |||
2211 | if(!mWave_TND.nDMCBytesRemaining && | ||
2212 | mWave_TND.bDMCSampleBufferEmpty && | ||
2213 | mWave_TND.bDMCDeltaSilent) | ||
2214 | mWave_TND.bDMCActive = mWave_TND.nDMCDeltaBit = 0; | ||
2215 | } | ||
2216 | } | ||
2217 | |||
2218 | EXIT_TIMER(tnd_dmc); | ||
2219 | |||
2220 | /* end of TND generation */ | ||
2221 | EXIT_TIMER(tnd); | ||
2222 | |||
2223 | if(nExternalSound && !bPALMode) | ||
2224 | { | ||
2225 | if(nExternalSound & EXTSOUND_VRC6) | ||
2226 | { | ||
2227 | |||
2228 | if(mWave_VRC6Pulse[0].bChannelEnabled) { | ||
2229 | |||
2230 | mWave_VRC6Pulse[0].nFreqCount -= tick; | ||
2231 | |||
2232 | if(mWave_VRC6Pulse[0].nDutyCount <= | ||
2233 | mWave_VRC6Pulse[0].nDutyCycle) | ||
2234 | { | ||
2235 | mWave_VRC6Pulse[0].nMixL = | ||
2236 | VRC6Pulse_nOutputTable_L[0] | ||
2237 | [mWave_VRC6Pulse[0].nVolume]; | ||
2238 | } else mWave_VRC6Pulse[0].nMixL = 0; | ||
2239 | |||
2240 | while(mWave_VRC6Pulse[0].nFreqCount <= 0) { | ||
2241 | mWave_VRC6Pulse[0].nFreqCount += | ||
2242 | mWave_VRC6Pulse[0].nFreqTimer.W + 1; | ||
2243 | |||
2244 | if(!mWave_VRC6Pulse[0].bDigitized) | ||
2245 | mWave_VRC6Pulse[0].nDutyCount = | ||
2246 | (mWave_VRC6Pulse[0].nDutyCount + 1) & 0x0F; | ||
2247 | } | ||
2248 | } | ||
2249 | |||
2250 | if(mWave_VRC6Pulse[1].bChannelEnabled) { | ||
2251 | |||
2252 | mWave_VRC6Pulse[1].nFreqCount -= tick; | ||
2253 | |||
2254 | if(mWave_VRC6Pulse[1].nDutyCount <= | ||
2255 | mWave_VRC6Pulse[1].nDutyCycle) | ||
2256 | { | ||
2257 | mWave_VRC6Pulse[1].nMixL = | ||
2258 | VRC6Pulse_nOutputTable_L[1] | ||
2259 | [mWave_VRC6Pulse[1].nVolume]; | ||
2260 | } else mWave_VRC6Pulse[1].nMixL = 0; | ||
2261 | |||
2262 | while(mWave_VRC6Pulse[1].nFreqCount <= 0) { | ||
2263 | mWave_VRC6Pulse[1].nFreqCount += | ||
2264 | mWave_VRC6Pulse[1].nFreqTimer.W + 1; | ||
2265 | |||
2266 | if(!mWave_VRC6Pulse[1].bDigitized) | ||
2267 | mWave_VRC6Pulse[1].nDutyCount = | ||
2268 | (mWave_VRC6Pulse[1].nDutyCount + 1) & 0x0F; | ||
2269 | } | ||
2270 | } | ||
2271 | |||
2272 | mWave_VRC6Saw.nFreqCount -= tick; | ||
2273 | |||
2274 | mWave_VRC6Saw.nMixL = | ||
2275 | VRC6Saw_nOutputTable_L[mWave_VRC6Saw.nAccum >> 3]; | ||
2276 | |||
2277 | while(mWave_VRC6Saw.nFreqCount <= 0) { | ||
2278 | |||
2279 | mWave_VRC6Saw.nFreqCount += mWave_VRC6Saw.nFreqTimer.W + 1; | ||
2280 | |||
2281 | mWave_VRC6Saw.nAccumStep++; | ||
2282 | if(mWave_VRC6Saw.nAccumStep == 14) | ||
2283 | { | ||
2284 | mWave_VRC6Saw.nAccumStep = 0; | ||
2285 | mWave_VRC6Saw.nAccum = 0; | ||
2286 | } | ||
2287 | else if(!(mWave_VRC6Saw.nAccumStep & 1)) | ||
2288 | mWave_VRC6Saw.nAccum += mWave_VRC6Saw.nAccumRate; | ||
2289 | } | ||
2290 | |||
2291 | } /* end VRC6 */ | ||
2292 | if(nExternalSound & EXTSOUND_N106) | ||
2293 | Wave_N106_DoTicks(tick); | ||
2294 | if(nExternalSound & EXTSOUND_FME07) | ||
2295 | { | ||
2296 | if (mWave_FME07[0].bChannelEnabled && | ||
2297 | mWave_FME07[0].nFreqTimer.W) { | ||
2298 | mWave_FME07[0].nFreqCount -= tick; | ||
2299 | |||
2300 | if(mWave_FME07[0].nDutyCount < 16) | ||
2301 | { | ||
2302 | mWave_FME07[0].nMixL = | ||
2303 | FME07_nOutputTable_L[0][mWave_FME07[0].nVolume]; | ||
2304 | } else mWave_FME07[0].nMixL = 0; | ||
2305 | while(mWave_FME07[0].nFreqCount <= 0) { | ||
2306 | mWave_FME07[0].nFreqCount += | ||
2307 | mWave_FME07[0].nFreqTimer.W; | ||
2308 | |||
2309 | mWave_FME07[0].nDutyCount= | ||
2310 | (mWave_FME07[0].nDutyCount+1)&0x1f; | ||
2311 | } | ||
2312 | } | ||
2313 | |||
2314 | if (mWave_FME07[1].bChannelEnabled && | ||
2315 | mWave_FME07[1].nFreqTimer.W) { | ||
2316 | mWave_FME07[1].nFreqCount -= tick; | ||
2317 | |||
2318 | if(mWave_FME07[1].nDutyCount < 16) | ||
2319 | { | ||
2320 | mWave_FME07[1].nMixL = | ||
2321 | FME07_nOutputTable_L[1][mWave_FME07[1].nVolume]; | ||
2322 | } else mWave_FME07[1].nMixL = 0; | ||
2323 | while(mWave_FME07[1].nFreqCount <= 0) { | ||
2324 | mWave_FME07[1].nFreqCount += | ||
2325 | mWave_FME07[1].nFreqTimer.W; | ||
2326 | |||
2327 | mWave_FME07[1].nDutyCount= | ||
2328 | (mWave_FME07[1].nDutyCount+1)&0x1f; | ||
2329 | } | ||
2330 | } | ||
2331 | |||
2332 | if (mWave_FME07[2].bChannelEnabled && | ||
2333 | mWave_FME07[2].nFreqTimer.W) { | ||
2334 | mWave_FME07[2].nFreqCount -= tick; | ||
2335 | |||
2336 | if(mWave_FME07[2].nDutyCount < 16) | ||
2337 | { | ||
2338 | mWave_FME07[2].nMixL = | ||
2339 | FME07_nOutputTable_L[2][mWave_FME07[2].nVolume]; | ||
2340 | } else mWave_FME07[2].nMixL = 0; | ||
2341 | while(mWave_FME07[2].nFreqCount <= 0) { | ||
2342 | mWave_FME07[2].nFreqCount += | ||
2343 | mWave_FME07[2].nFreqTimer.W; | ||
2344 | |||
2345 | mWave_FME07[2].nDutyCount= | ||
2346 | (mWave_FME07[2].nDutyCount+1)&0x1f; | ||
2347 | } | ||
2348 | } | ||
2349 | |||
2350 | } /* end FME07 */ | ||
2351 | ENTER_TIMER(fds); | ||
2352 | if(nExternalSound & EXTSOUND_FDS) { | ||
2353 | |||
2354 | /* Volume Envelope Unit */ | ||
2355 | if(mWave_FDS.bVolEnv_On) | ||
2356 | { | ||
2357 | mWave_FDS.nVolEnv_Count -= tick; | ||
2358 | while(mWave_FDS.nVolEnv_Count <= 0) | ||
2359 | { | ||
2360 | mWave_FDS.nVolEnv_Count += mWave_FDS.nVolEnv_Timer; | ||
2361 | if(mWave_FDS.nVolEnv_Mode) { | ||
2362 | if(mWave_FDS.nVolEnv_Gain < 0x20) | ||
2363 | mWave_FDS.nVolEnv_Gain++; | ||
2364 | } | ||
2365 | else { | ||
2366 | if(mWave_FDS.nVolEnv_Gain) | ||
2367 | mWave_FDS.nVolEnv_Gain--; | ||
2368 | } | ||
2369 | } | ||
2370 | } | ||
2371 | |||
2372 | /* Sweep Envelope Unit */ | ||
2373 | if(mWave_FDS.bSweepEnv_On) | ||
2374 | { | ||
2375 | mWave_FDS.nSweep_Count -= tick; | ||
2376 | while(mWave_FDS.nSweep_Count <= 0) | ||
2377 | { | ||
2378 | mWave_FDS.nSweep_Count += mWave_FDS.nSweep_Timer; | ||
2379 | if(mWave_FDS.nSweep_Mode) { | ||
2380 | if(mWave_FDS.nSweep_Gain < 0x20) | ||
2381 | mWave_FDS.nSweep_Gain++; | ||
2382 | } else { | ||
2383 | if(mWave_FDS.nSweep_Gain) mWave_FDS.nSweep_Gain--; | ||
2384 | } | ||
2385 | } | ||
2386 | } | ||
2387 | |||
2388 | /* Effector / LFO */ | ||
2389 | int32_t subfreq = 0; | ||
2390 | if(mWave_FDS.bLFO_On) | ||
2391 | { | ||
2392 | mWave_FDS.nLFO_Count -= tick<<14; | ||
2393 | while(mWave_FDS.nLFO_Count <= 0) | ||
2394 | { | ||
2395 | mWave_FDS.nLFO_Count += mWave_FDS.nLFO_Timer; | ||
2396 | if(mWave_FDS.nLFO_Table[mWave_FDS.nLFO_Addr] == 4) | ||
2397 | mWave_FDS.nSweepBias = 0; | ||
2398 | else | ||
2399 | mWave_FDS.nSweepBias += | ||
2400 | ModulationTable[ | ||
2401 | mWave_FDS.nLFO_Table[mWave_FDS.nLFO_Addr] | ||
2402 | ]; | ||
2403 | mWave_FDS.nLFO_Addr = (mWave_FDS.nLFO_Addr + 1) & 0x3F; | ||
2404 | } | ||
2405 | |||
2406 | while(mWave_FDS.nSweepBias > 63) | ||
2407 | mWave_FDS.nSweepBias -= 128; | ||
2408 | while(mWave_FDS.nSweepBias < -64) | ||
2409 | mWave_FDS.nSweepBias += 128; | ||
2410 | |||
2411 | register int32_t temp = | ||
2412 | mWave_FDS.nSweepBias * mWave_FDS.nSweep_Gain; | ||
2413 | if(temp & 0x0F) | ||
2414 | { | ||
2415 | temp /= 16; | ||
2416 | if(mWave_FDS.nSweepBias < 0) temp--; | ||
2417 | else temp += 2; | ||
2418 | } | ||
2419 | else | ||
2420 | temp /= 16; | ||
2421 | |||
2422 | if(temp > 193) temp -= 258; | ||
2423 | if(temp < -64) temp += 256; | ||
2424 | |||
2425 | subfreq = mWave_FDS.nFreq.W * temp / 64; | ||
2426 | } | ||
2427 | |||
2428 | /* Main Unit */ | ||
2429 | if(mWave_FDS.bMain_On) | ||
2430 | { | ||
2431 | mWave_FDS.nMixL = | ||
2432 | FDS_nOutputTable_L[mWave_FDS.nMainVolume] | ||
2433 | [mWave_FDS.nVolume] | ||
2434 | [mWave_FDS.nWaveTable[mWave_FDS.nMainAddr] ]; | ||
2435 | |||
2436 | if((subfreq + mWave_FDS.nFreq.W) > 0) | ||
2437 | { | ||
2438 | int32_t freq = (0x10000<<14) / (subfreq + mWave_FDS.nFreq.W); | ||
2439 | |||
2440 | mWave_FDS.nFreqCount -= tick<<14; | ||
2441 | while(mWave_FDS.nFreqCount <= 0) | ||
2442 | { | ||
2443 | mWave_FDS.nFreqCount += freq; | ||
2444 | |||
2445 | mWave_FDS.nMainAddr = | ||
2446 | (mWave_FDS.nMainAddr + 1) & 0x3F; | ||
2447 | mWave_FDS.nPopOutput = | ||
2448 | mWave_FDS.nWaveTable[mWave_FDS.nMainAddr]; | ||
2449 | if(!mWave_FDS.nMainAddr) | ||
2450 | { | ||
2451 | if(mWave_FDS.nVolEnv_Gain < 0x20) | ||
2452 | mWave_FDS.nVolume = mWave_FDS.nVolEnv_Gain; | ||
2453 | else mWave_FDS.nVolume = 0x20; | ||
2454 | } | ||
2455 | } | ||
2456 | } | ||
2457 | else | ||
2458 | mWave_FDS.nFreqCount = mWave_FDS.nLFO_Count; | ||
2459 | } | ||
2460 | else if(mWave_FDS.bPopReducer && mWave_FDS.nPopOutput) | ||
2461 | { | ||
2462 | mWave_FDS.nMixL = FDS_nOutputTable_L[mWave_FDS.nMainVolume] | ||
2463 | [mWave_FDS.nVolume] | ||
2464 | [mWave_FDS.nPopOutput]; | ||
2465 | |||
2466 | mWave_FDS.nPopCount -= tick; | ||
2467 | while(mWave_FDS.nPopCount <= 0) | ||
2468 | { | ||
2469 | mWave_FDS.nPopCount += 500; | ||
2470 | mWave_FDS.nPopOutput--; | ||
2471 | if(!mWave_FDS.nPopOutput) | ||
2472 | mWave_FDS.nMainAddr = 0; | ||
2473 | } | ||
2474 | } /* end FDS */ | ||
2475 | } | ||
2476 | EXIT_TIMER(fds); | ||
2477 | } /* end while fulltick */ | ||
2478 | |||
2479 | if(bBurnCPUCycles) | ||
2480 | { | ||
2481 | nCPUCycle += burned; | ||
2482 | fulltick += burned; | ||
2483 | } | ||
2484 | |||
2485 | /* Frame Sequencer */ | ||
2486 | |||
2487 | ENTER_TIMER(frame); | ||
2488 | nTicksUntilNextFrame -= tick<<16; | ||
2489 | while(nTicksUntilNextFrame <= 0) | ||
2490 | { | ||
2491 | nTicksUntilNextFrame += | ||
2492 | (bPALMode ? PAL_FRAME_COUNTER_FREQ : NTSC_FRAME_COUNTER_FREQ) * | ||
2493 | 0x10000; | ||
2494 | nFrameCounter++; | ||
2495 | if(nFrameCounter > nFrameCounterMax) | ||
2496 | nFrameCounter = 0; | ||
2497 | |||
2498 | if(nFrameCounterMax == 4) | ||
2499 | { | ||
2500 | if(nFrameCounter < 4) | ||
2501 | { | ||
2502 | CLOCK_MAJOR(); | ||
2503 | if(!(nFrameCounter & 1)) | ||
2504 | CLOCK_MINOR(); | ||
2505 | } | ||
2506 | } | ||
2507 | else | ||
2508 | { | ||
2509 | CLOCK_MAJOR(); | ||
2510 | if(nFrameCounter & 1) | ||
2511 | CLOCK_MINOR(); | ||
2512 | |||
2513 | if((nFrameCounter == 3) && bFrameIRQEnabled) | ||
2514 | bFrameIRQPending = 1; | ||
2515 | } | ||
2516 | } | ||
2517 | EXIT_TIMER(frame); | ||
2518 | |||
2519 | ENTER_TIMER(mix); | ||
2520 | nTicksUntilNextSample -= tick<<16; | ||
2521 | if(nTicksUntilNextSample <= 0) | ||
2522 | { | ||
2523 | nTicksUntilNextSample += nTicksPerSample; | ||
2524 | |||
2525 | mixL = mWave_Squares.nMixL; | ||
2526 | mixL += mWave_TND.nMixL; | ||
2527 | |||
2528 | if(nExternalSound && !bPALMode) | ||
2529 | { | ||
2530 | if(nExternalSound & EXTSOUND_VRC6) | ||
2531 | { | ||
2532 | mixL += (mWave_VRC6Pulse[0].nMixL); | ||
2533 | mixL += (mWave_VRC6Pulse[1].nMixL); | ||
2534 | mixL += (mWave_VRC6Saw.nMixL); | ||
2535 | } | ||
2536 | if(nExternalSound & EXTSOUND_N106) { | ||
2537 | mixL += (mWave_N106.nMixL[0]); | ||
2538 | mixL += (mWave_N106.nMixL[1]); | ||
2539 | mixL += (mWave_N106.nMixL[2]); | ||
2540 | mixL += (mWave_N106.nMixL[3]); | ||
2541 | mixL += (mWave_N106.nMixL[4]); | ||
2542 | mixL += (mWave_N106.nMixL[5]); | ||
2543 | mixL += (mWave_N106.nMixL[6]); | ||
2544 | mixL += (mWave_N106.nMixL[7]); | ||
2545 | } | ||
2546 | if(nExternalSound & EXTSOUND_FME07) | ||
2547 | { | ||
2548 | mixL += (mWave_FME07[0].nMixL); | ||
2549 | mixL += (mWave_FME07[1].nMixL); | ||
2550 | mixL += (mWave_FME07[2].nMixL); | ||
2551 | } | ||
2552 | if(nExternalSound & EXTSOUND_FDS) | ||
2553 | mixL += mWave_FDS.nMixL; | ||
2554 | } | ||
2555 | |||
2556 | /* Filter */ | ||
2557 | diff = ((int64_t)mixL << 25) - nFilterAccL; | ||
2558 | nFilterAccL += (diff * nHighPass) >> 16; | ||
2559 | mixL = (int32_t)(diff >> 23); | ||
2560 | /* End Filter */ | ||
2561 | |||
2562 | if(bFade && (fFadeVolume < 1)) | ||
2563 | mixL = (int32_t)(mixL * fFadeVolume); | ||
2564 | |||
2565 | if(mixL < -32768) mixL = -32768; | ||
2566 | if(mixL > 32767) mixL = 32767; | ||
2567 | |||
2568 | *((uint16_t*)pOutput) = (uint16_t)mixL; | ||
2569 | pOutput += 2; | ||
2570 | } | ||
2571 | |||
2572 | } | ||
2573 | EXIT_TIMER(mix); | ||
2574 | |||
2575 | nAPUCycle = nCPUCycle; | ||
2576 | |||
2577 | EXIT_TIMER(apu); | ||
2578 | } | ||
2579 | |||
2580 | |||
2581 | /* | ||
2582 | * Initialize | ||
2583 | * | ||
2584 | * Initializes Memory | ||
2585 | */ | ||
2586 | |||
2587 | int NSFCore_Initialize() | ||
2588 | { | ||
2589 | int32_t i; | ||
2590 | /* clear globals */ | ||
2591 | /* why, yes, this was easier when they were in a struct */ | ||
2592 | |||
2593 | /* Initialization flags */ | ||
2594 | bMemoryOK=0; | ||
2595 | bFileLoaded=0; | ||
2596 | bTrackSelected=0; | ||
2597 | bIsGeneratingSamples=0; | ||
2598 | |||
2599 | /* | ||
2600 | * Memory | ||
2601 | */ | ||
2602 | |||
2603 | ZEROMEMORY(pRAM,0x800); | ||
2604 | ZEROMEMORY(pSRAM,0x2000); | ||
2605 | ZEROMEMORY(pExRAM,0x1000); | ||
2606 | pROM_Full=0; | ||
2607 | |||
2608 | ZEROMEMORY(pROM,10); | ||
2609 | pStack=0; | ||
2610 | |||
2611 | nROMSize=0; | ||
2612 | nROMBankCount=0; | ||
2613 | nROMMaxSize=0; | ||
2614 | |||
2615 | /* | ||
2616 | * Memory Proc Pointers | ||
2617 | */ | ||
2618 | |||
2619 | ZEROMEMORY(ReadMemory,sizeof(ReadProc)*0x10); | ||
2620 | ZEROMEMORY(WriteMemory,sizeof(WriteProc)*0x10); | ||
2621 | |||
2622 | /* | ||
2623 | * 6502 Registers / Mode | ||
2624 | */ | ||
2625 | |||
2626 | regA=0; | ||
2627 | regX=0; | ||
2628 | regY=0; | ||
2629 | regP=0; | ||
2630 | regSP=0; | ||
2631 | regPC=0; | ||
2632 | |||
2633 | bPALMode=0; | ||
2634 | bCPUJammed=0; | ||
2635 | |||
2636 | nMultIn_Low=0; | ||
2637 | nMultIn_High=0; | ||
2638 | |||
2639 | /* | ||
2640 | * NSF Preparation Information | ||
2641 | */ | ||
2642 | |||
2643 | ZEROMEMORY(nBankswitchInitValues,10); | ||
2644 | nPlayAddress=0; | ||
2645 | nInitAddress=0; | ||
2646 | |||
2647 | nExternalSound=0; | ||
2648 | nCurTrack=0; | ||
2649 | |||
2650 | fNSFPlaybackSpeed=0; | ||
2651 | |||
2652 | /* | ||
2653 | * pAPU | ||
2654 | */ | ||
2655 | |||
2656 | nFrameCounter=0; | ||
2657 | nFrameCounterMax=0; | ||
2658 | bFrameIRQEnabled=0; | ||
2659 | bFrameIRQPending=0; | ||
2660 | |||
2661 | /* | ||
2662 | * Timing and Counters | ||
2663 | */ | ||
2664 | nTicksUntilNextFrame=0; | ||
2665 | |||
2666 | nTicksPerPlay=0; | ||
2667 | nTicksUntilNextPlay=0; | ||
2668 | |||
2669 | nTicksPerSample=0; | ||
2670 | nTicksUntilNextSample=0; | ||
2671 | |||
2672 | nCPUCycle=0; | ||
2673 | nAPUCycle=0; | ||
2674 | nTotalPlays=0; | ||
2675 | |||
2676 | /* | ||
2677 | * Silence Tracker | ||
2678 | */ | ||
2679 | nSilentSamples=0; | ||
2680 | nSilentSampleMax=0; | ||
2681 | nSilenceTrackMS=0; | ||
2682 | bNoSilenceIfTime=0; | ||
2683 | bTimeNotDefault=0; | ||
2684 | |||
2685 | /* | ||
2686 | * Volume/fading/filter tracking | ||
2687 | */ | ||
2688 | |||
2689 | nStartFade=0; | ||
2690 | nEndFade=0; | ||
2691 | bFade=0; | ||
2692 | fFadeVolume=0; | ||
2693 | fFadeChange=0; | ||
2694 | |||
2695 | pOutput=0; | ||
2696 | |||
2697 | nDMCPop_Prev=0; | ||
2698 | bDMCPop_Skip=0; | ||
2699 | bDMCPop_SamePlay=0; | ||
2700 | |||
2701 | /* | ||
2702 | * Sound Filter | ||
2703 | */ | ||
2704 | |||
2705 | nFilterAccL=0; | ||
2706 | nHighPass=0; | ||
2707 | |||
2708 | nHighPassBase=0; | ||
2709 | |||
2710 | bHighPassEnabled=0; | ||
2711 | |||
2712 | /* channels */ | ||
2713 | |||
2714 | ZEROMEMORY(&mWave_Squares,sizeof(struct Wave_Squares)); | ||
2715 | ZEROMEMORY(&mWave_TND,sizeof(struct Wave_TND)); | ||
2716 | ZEROMEMORY(mWave_VRC6Pulse,sizeof(struct VRC6PulseWave)*2); | ||
2717 | ZEROMEMORY(&mWave_VRC6Saw,sizeof(struct VRC6SawWave)); | ||
2718 | ZEROMEMORY(&mWave_N106,sizeof(struct N106Wave)); | ||
2719 | ZEROMEMORY(mWave_FME07,sizeof(struct FME07Wave)*3); | ||
2720 | ZEROMEMORY(&mWave_FDS,sizeof(struct FDSWave)); | ||
2721 | |||
2722 | /* end clear globals */ | ||
2723 | |||
2724 | // Default filter bases | ||
2725 | nHighPassBase = 150; | ||
2726 | |||
2727 | bHighPassEnabled = 1; | ||
2728 | |||
2729 | mWave_TND.nNoiseRandomShift = 1; | ||
2730 | for(i = 0; i < 8; i++) | ||
2731 | mWave_TND.pDMCDMAPtr[i] = pROM[i + 2]; | ||
2732 | |||
2733 | |||
2734 | SetPlaybackOptions(nSampleRate); | ||
2735 | |||
2736 | for(i = 0; i < 8; i++) | ||
2737 | mWave_N106.fFrequencyLookupTable[i] = | ||
2738 | (((i + 1) * 45 * 0x40000) / (float)NES_FREQUENCY) * | ||
2739 | (float)NTSC_FREQUENCY; | ||
2740 | |||
2741 | if(bMemoryOK) return 1; | ||
2742 | |||
2743 | ZEROMEMORY(pRAM,0x800); | ||
2744 | ZEROMEMORY(pSRAM,0x2000); | ||
2745 | ZEROMEMORY(pExRAM,0x1000); | ||
2746 | pStack = pRAM + 0x100; | ||
2747 | bMemoryOK = 1; | ||
2748 | return 1; | ||
2749 | } | ||
2750 | |||
2751 | /* | ||
2752 | * LoadNSF | ||
2753 | */ | ||
2754 | |||
2755 | int LoadNSF(int32_t datasize) | ||
2756 | { | ||
2757 | if(!bMemoryOK) return 0; | ||
2758 | |||
2759 | if(!pDataBuffer) return 0; | ||
2760 | |||
2761 | int32_t i; | ||
2762 | |||
2763 | bFileLoaded = 0; | ||
2764 | bTrackSelected = 0; | ||
2765 | nExternalSound = nChipExtensions; | ||
2766 | if(nIsPal & 2) | ||
2767 | bPALMode = bPALPreference; | ||
2768 | else | ||
2769 | bPALMode = nIsPal & 1; | ||
2770 | |||
2771 | SetPlaybackOptions(nSampleRate); | ||
2772 | |||
2773 | int32_t neededsize = datasize + (nfileLoadAddress & 0x0FFF); | ||
2774 | if(neededsize & 0x0FFF) neededsize += 0x1000 - (neededsize & 0x0FFF); | ||
2775 | if(neededsize < 0x1000) neededsize = 0x1000; | ||
2776 | |||
2777 | uint8_t specialload = 0; | ||
2778 | |||
2779 | for(i = 0; (i < 8) && (!nBankswitch[i]); i++); | ||
2780 | if(i < 8) /* uses bankswitching */ | ||
2781 | { | ||
2782 | memcpy(&nBankswitchInitValues[2],nBankswitch,8); | ||
2783 | nBankswitchInitValues[0] = nBankswitch[6]; | ||
2784 | nBankswitchInitValues[1] = nBankswitch[7]; | ||
2785 | if(nExternalSound & EXTSOUND_FDS) | ||
2786 | { | ||
2787 | if(!(nBankswitchInitValues[0] || nBankswitchInitValues[1])) | ||
2788 | { | ||
2789 | /* | ||
2790 | * FDS sound with '00' specified for both $6000 and $7000 banks. | ||
2791 | * point this to an area of fresh RAM (sort of hackish solution | ||
2792 | * for those FDS tunes that don't quite follow the nsf specs. | ||
2793 | */ | ||
2794 | nBankswitchInitValues[0] = (uint8_t)(neededsize >> 12); | ||
2795 | nBankswitchInitValues[1] = (uint8_t)(neededsize >> 12) + 1; | ||
2796 | neededsize += 0x2000; | ||
2797 | } | ||
2798 | } | ||
2799 | } | ||
2800 | else /* doesn't use bankswitching */ | ||
2801 | { | ||
2802 | if(nExternalSound & EXTSOUND_FDS) | ||
2803 | { | ||
2804 | /* bad load address */ | ||
2805 | if(nfileLoadAddress < 0x6000) return 0; | ||
2806 | |||
2807 | if(neededsize < 0xA000) | ||
2808 | neededsize = 0xA000; | ||
2809 | specialload = 1; | ||
2810 | for(i = 0; i < 10; i++) | ||
2811 | nBankswitchInitValues[i] = (uint8_t)i; | ||
2812 | } | ||
2813 | else | ||
2814 | { | ||
2815 | /* bad load address */ | ||
2816 | if(nfileLoadAddress < 0x8000) return 0; | ||
2817 | |||
2818 | int32_t j = (nfileLoadAddress >> 12) - 6; | ||
2819 | for(i = 0; i < j; i++) | ||
2820 | nBankswitchInitValues[i] = 0; | ||
2821 | for(j = 0; i < 10; i++, j++) | ||
2822 | nBankswitchInitValues[i] = (uint8_t)j; | ||
2823 | } | ||
2824 | } | ||
2825 | |||
2826 | nROMSize = neededsize; | ||
2827 | nROMBankCount = neededsize >> 12; | ||
2828 | |||
2829 | if(specialload) | ||
2830 | pROM_Full = pDataBuffer-(nfileLoadAddress-0x6000); | ||
2831 | else | ||
2832 | pROM_Full = pDataBuffer-(nfileLoadAddress&0x0FFF); | ||
2833 | |||
2834 | ZEROMEMORY(pRAM,0x0800); | ||
2835 | ZEROMEMORY(pExRAM,0x1000); | ||
2836 | ZEROMEMORY(pSRAM,0x2000); | ||
2837 | |||
2838 | nExternalSound = nChipExtensions; | ||
2839 | fNSFPlaybackSpeed = (bPALMode ? PAL_NMIRATE : NTSC_NMIRATE); | ||
2840 | |||
2841 | bFileLoaded = 1; | ||
2842 | |||
2843 | SetPlaybackSpeed(0); | ||
2844 | |||
2845 | nPlayAddress = nfilePlayAddress; | ||
2846 | nInitAddress = nfileInitAddress; | ||
2847 | |||
2848 | pExRAM[0x00] = 0x20; /* JSR */ | ||
2849 | pExRAM[0x01] = nInitAddress&0xff; /* Init Address */ | ||
2850 | pExRAM[0x02] = (nInitAddress>>8)&0xff; | ||
2851 | pExRAM[0x03] = 0xF2; /* JAM */ | ||
2852 | pExRAM[0x04] = 0x20; /* JSR */ | ||
2853 | pExRAM[0x05] = nPlayAddress&0xff; /* Play Address */ | ||
2854 | pExRAM[0x06] = (nPlayAddress>>8)&0xff; | ||
2855 | pExRAM[0x07] = 0x4C; /* JMP */ | ||
2856 | pExRAM[0x08] = 0x03;/* $5003 (JAM right before the JSR to play address) */ | ||
2857 | pExRAM[0x09] = 0x50; | ||
2858 | |||
2859 | regA = regX = regY = 0; | ||
2860 | regP = 0x04; /* I_FLAG */ | ||
2861 | regSP = 0xFF; | ||
2862 | |||
2863 | nFilterAccL = 0; | ||
2864 | |||
2865 | /* Reset Read/Write Procs */ | ||
2866 | |||
2867 | ReadMemory[0] = ReadMemory[1] = ReadMemory_RAM; | ||
2868 | ReadMemory[2] = ReadMemory[3] = ReadMemory_Default; | ||
2869 | ReadMemory[4] = ReadMemory_pAPU; | ||
2870 | ReadMemory[5] = ReadMemory_ExRAM; | ||
2871 | ReadMemory[6] = ReadMemory[7] = ReadMemory_SRAM; | ||
2872 | |||
2873 | WriteMemory[0] = WriteMemory[1] = WriteMemory_RAM; | ||
2874 | WriteMemory[2] = WriteMemory[3] = WriteMemory_Default; | ||
2875 | WriteMemory[4] = WriteMemory_pAPU; | ||
2876 | WriteMemory[5] = WriteMemory_ExRAM; | ||
2877 | WriteMemory[6] = WriteMemory[7] = WriteMemory_SRAM; | ||
2878 | |||
2879 | for(i = 8; i < 16; i++) | ||
2880 | { | ||
2881 | ReadMemory[i] = ReadMemory_ROM; | ||
2882 | WriteMemory[i] = WriteMemory_Default; | ||
2883 | } | ||
2884 | |||
2885 | if(nExternalSound & EXTSOUND_FDS) | ||
2886 | { | ||
2887 | WriteMemory[0x06] = WriteMemory_FDSRAM; | ||
2888 | WriteMemory[0x07] = WriteMemory_FDSRAM; | ||
2889 | WriteMemory[0x08] = WriteMemory_FDSRAM; | ||
2890 | WriteMemory[0x09] = WriteMemory_FDSRAM; | ||
2891 | WriteMemory[0x0A] = WriteMemory_FDSRAM; | ||
2892 | WriteMemory[0x0B] = WriteMemory_FDSRAM; | ||
2893 | WriteMemory[0x0C] = WriteMemory_FDSRAM; | ||
2894 | WriteMemory[0x0D] = WriteMemory_FDSRAM; | ||
2895 | ReadMemory[0x06] = ReadMemory_ROM; | ||
2896 | ReadMemory[0x07] = ReadMemory_ROM; | ||
2897 | } | ||
2898 | |||
2899 | if(!bPALMode) /* no expansion sound available on a PAL system */ | ||
2900 | { | ||
2901 | if(nExternalSound & EXTSOUND_VRC6) | ||
2902 | { | ||
2903 | /* if both VRC6+VRC7... it MUST go to WriteMemory_VRC6 | ||
2904 | * or register writes will be lost (WriteMemory_VRC6 calls | ||
2905 | * WriteMemory_VRC7 if needed) */ | ||
2906 | WriteMemory[0x09] = WriteMemory_VRC6; | ||
2907 | WriteMemory[0x0A] = WriteMemory_VRC6; | ||
2908 | WriteMemory[0x0B] = WriteMemory_VRC6; | ||
2909 | } | ||
2910 | if(nExternalSound & EXTSOUND_N106) | ||
2911 | { | ||
2912 | WriteMemory[0x04] = WriteMemory_N106; | ||
2913 | ReadMemory[0x04] = ReadMemory_N106; | ||
2914 | WriteMemory[0x0F] = WriteMemory_N106; | ||
2915 | } | ||
2916 | if(nExternalSound & EXTSOUND_FME07) | ||
2917 | { | ||
2918 | WriteMemory[0x0C] = WriteMemory_FME07; | ||
2919 | WriteMemory[0x0E] = WriteMemory_FME07; | ||
2920 | } | ||
2921 | } | ||
2922 | |||
2923 | /* MMC5 still has a multiplication reg that needs to be available on | ||
2924 | PAL tunes */ | ||
2925 | if(nExternalSound & EXTSOUND_MMC5) | ||
2926 | WriteMemory[0x05] = WriteMemory_MMC5; | ||
2927 | |||
2928 | return 1; | ||
2929 | } | ||
2930 | |||
2931 | /* | ||
2932 | * SetTrack | ||
2933 | */ | ||
2934 | |||
2935 | void SetTrack(uint8_t track) | ||
2936 | { | ||
2937 | int32_t i; | ||
2938 | if(!bFileLoaded) return; | ||
2939 | |||
2940 | bTrackSelected = 1; | ||
2941 | nCurTrack = track; | ||
2942 | |||
2943 | regPC = 0x5000; | ||
2944 | regA = track; | ||
2945 | regX = bPALMode; | ||
2946 | regY = bCleanAXY ? 0 : 0xCD; | ||
2947 | regSP = 0xFF; | ||
2948 | if(bCleanAXY) | ||
2949 | regP = 0x04; | ||
2950 | bCPUJammed = 0; | ||
2951 | |||
2952 | nCPUCycle = nAPUCycle = 0; | ||
2953 | nDMCPop_Prev = 0; | ||
2954 | bDMCPop_Skip = 0; | ||
2955 | |||
2956 | for(i = 0x4000; i < 0x400F; i++) | ||
2957 | WriteMemory_pAPU(i,0); | ||
2958 | WriteMemory_pAPU(0x4010,0); | ||
2959 | WriteMemory_pAPU(0x4012,0); | ||
2960 | WriteMemory_pAPU(0x4013,0); | ||
2961 | WriteMemory_pAPU(0x4014,0); | ||
2962 | WriteMemory_pAPU(0x4015,0); | ||
2963 | WriteMemory_pAPU(0x4015,0x0F); | ||
2964 | WriteMemory_pAPU(0x4017,0); | ||
2965 | |||
2966 | for(i = 0; i < 10; i++) | ||
2967 | WriteMemory_ExRAM(0x5FF6 + i,nBankswitchInitValues[i]); | ||
2968 | |||
2969 | ZEROMEMORY(pRAM,0x0800); | ||
2970 | ZEROMEMORY(pSRAM,0x2000); | ||
2971 | ZEROMEMORY(&pExRAM[0x10],0x0FF0); | ||
2972 | bFade = 0; | ||
2973 | |||
2974 | |||
2975 | nTicksUntilNextSample = nTicksPerSample; | ||
2976 | nTicksUntilNextFrame = | ||
2977 | (bPALMode ? PAL_FRAME_COUNTER_FREQ : NTSC_FRAME_COUNTER_FREQ)*0x10000; | ||
2978 | nTicksUntilNextPlay = nTicksPerPlay; | ||
2979 | nTotalPlays = 0; | ||
2980 | |||
2981 | /* Clear mixing vals */ | ||
2982 | mWave_Squares.nMixL = 0; | ||
2983 | mWave_TND.nMixL = 0; | ||
2984 | mWave_VRC6Pulse[0].nMixL = 0; | ||
2985 | mWave_VRC6Pulse[1].nMixL = 0; | ||
2986 | mWave_VRC6Saw.nMixL = 0; | ||
2987 | |||
2988 | /* Reset Tri/Noise/DMC */ | ||
2989 | mWave_TND.nTriStep = mWave_TND.nTriOutput = 0; | ||
2990 | mWave_TND.nDMCOutput = 0; | ||
2991 | mWave_TND.bNoiseRandomOut = 0; | ||
2992 | mWave_Squares.nDutyCount[0] = mWave_Squares.nDutyCount[1] = 0; | ||
2993 | mWave_TND.bDMCActive = 0; | ||
2994 | mWave_TND.nDMCBytesRemaining = 0; | ||
2995 | mWave_TND.bDMCSampleBufferEmpty = 1; | ||
2996 | mWave_TND.bDMCDeltaSilent = 1; | ||
2997 | |||
2998 | /* Reset VRC6 */ | ||
2999 | mWave_VRC6Pulse[0].nVolume = 0; | ||
3000 | mWave_VRC6Pulse[1].nVolume = 0; | ||
3001 | mWave_VRC6Saw.nAccumRate = 0; | ||
3002 | |||
3003 | /* Reset N106 */ | ||
3004 | ZEROMEMORY(mWave_N106.nRAM,0x100); | ||
3005 | ZEROMEMORY(mWave_N106.nVolume,8); | ||
3006 | ZEROMEMORY(mWave_N106.nOutput,8); | ||
3007 | ZEROMEMORY(mWave_N106.nMixL,32); | ||
3008 | |||
3009 | /* Reset FME-07 */ | ||
3010 | mWave_FME07[0].nVolume = 0; | ||
3011 | mWave_FME07[1].nVolume = 0; | ||
3012 | mWave_FME07[2].nVolume = 0; | ||
3013 | |||
3014 | /* Clear FDS crap */ | ||
3015 | |||
3016 | mWave_FDS.bEnvelopeEnable = 0; | ||
3017 | mWave_FDS.nEnvelopeSpeed = 0xFF; | ||
3018 | mWave_FDS.nVolEnv_Mode = 2; | ||
3019 | mWave_FDS.nVolEnv_Decay = 0; | ||
3020 | mWave_FDS.nVolEnv_Gain = 0; | ||
3021 | mWave_FDS.nVolume = 0; | ||
3022 | mWave_FDS.bVolEnv_On = 0; | ||
3023 | mWave_FDS.nSweep_Mode = 2; | ||
3024 | mWave_FDS.nSweep_Decay = 0; | ||
3025 | mWave_FDS.nSweep_Gain = 0; | ||
3026 | mWave_FDS.bSweepEnv_On = 0; | ||
3027 | mWave_FDS.nSweepBias = 0; | ||
3028 | mWave_FDS.bLFO_Enabled = 0; | ||
3029 | mWave_FDS.nLFO_Freq.W = 0; | ||
3030 | /* mWave_FDS.fLFO_Timer = 0; | ||
3031 | mWave_FDS.fLFO_Count = 0;*/ | ||
3032 | mWave_FDS.nLFO_Timer = 0; | ||
3033 | mWave_FDS.nLFO_Count = 0; | ||
3034 | mWave_FDS.nLFO_Addr = 0; | ||
3035 | mWave_FDS.bLFO_On = 0; | ||
3036 | mWave_FDS.nMainVolume = 0; | ||
3037 | mWave_FDS.bEnabled = 0; | ||
3038 | mWave_FDS.nFreq.W = 0; | ||
3039 | /* mWave_FDS.fFreqCount = 0;*/ | ||
3040 | mWave_FDS.nFreqCount = 0; | ||
3041 | mWave_FDS.nMainAddr = 0; | ||
3042 | mWave_FDS.bWaveWrite = 0; | ||
3043 | mWave_FDS.bMain_On = 0; | ||
3044 | mWave_FDS.nMixL = 0; | ||
3045 | ZEROMEMORY(mWave_FDS.nWaveTable,0x40); | ||
3046 | ZEROMEMORY(mWave_FDS.nLFO_Table,0x40); | ||
3047 | |||
3048 | mWave_FDS.nSweep_Count = mWave_FDS.nSweep_Timer = | ||
3049 | ((mWave_FDS.nSweep_Decay + 1) * mWave_FDS.nEnvelopeSpeed * 8); | ||
3050 | mWave_FDS.nVolEnv_Count = mWave_FDS.nVolEnv_Timer = | ||
3051 | ((mWave_FDS.nVolEnv_Decay + 1) * mWave_FDS.nEnvelopeSpeed * 8); | ||
3052 | |||
3053 | nSilentSamples = 0; | ||
3054 | |||
3055 | nFilterAccL = 0; | ||
3056 | |||
3057 | nSilentSamples = 0; | ||
3058 | |||
3059 | fulltick=0; | ||
3060 | } | ||
3061 | |||
3062 | /* | ||
3063 | * SetPlaybackOptions | ||
3064 | */ | ||
3065 | |||
3066 | int SetPlaybackOptions(int32_t samplerate) | ||
3067 | { | ||
3068 | if(samplerate < 2000) return 0; | ||
3069 | if(samplerate > 96000) return 0; | ||
3070 | |||
3071 | nTicksPerSample = | ||
3072 | (bPALMode ? PAL_FREQUENCY : NTSC_FREQUENCY) / samplerate * 0x10000; | ||
3073 | nTicksUntilNextSample = nTicksPerSample; | ||
3074 | |||
3075 | RecalcFilter(); | ||
3076 | RecalcSilenceTracker(); | ||
3077 | |||
3078 | return 1; | ||
3079 | } | ||
3080 | |||
3081 | /* | ||
3082 | * SetPlaybackSpeed | ||
3083 | */ | ||
3084 | |||
3085 | void SetPlaybackSpeed(float playspersec) | ||
3086 | { | ||
3087 | if(playspersec < 1) | ||
3088 | { | ||
3089 | if(!bFileLoaded) return; | ||
3090 | playspersec = fNSFPlaybackSpeed; | ||
3091 | } | ||
3092 | |||
3093 | nTicksPerPlay = nTicksUntilNextPlay = | ||
3094 | (bPALMode ? PAL_FREQUENCY : NTSC_FREQUENCY) / playspersec * 0x10000; | ||
3095 | } | ||
3096 | |||
3097 | /* | ||
3098 | * GetPlaybackSpeed | ||
3099 | */ | ||
3100 | |||
3101 | float GetPlaybackSpeed() | ||
3102 | { | ||
3103 | if(nTicksPerPlay <= 0) return 0; | ||
3104 | return ((bPALMode ? PAL_FREQUENCY : NTSC_FREQUENCY) / (nTicksPerPlay>>16)); | ||
3105 | } | ||
3106 | |||
3107 | /* | ||
3108 | * RecalcFilter | ||
3109 | */ | ||
3110 | |||
3111 | void RecalcFilter() | ||
3112 | { | ||
3113 | if(!nSampleRate) return; | ||
3114 | |||
3115 | nHighPass = ((int64_t)nHighPassBase << 16) / nSampleRate; | ||
3116 | |||
3117 | if(nHighPass > (1<<16)) nHighPass = 1<<16; | ||
3118 | } | ||
3119 | |||
3120 | /* | ||
3121 | * RecalcSilenceTracker | ||
3122 | */ | ||
3123 | |||
3124 | void RecalcSilenceTracker() | ||
3125 | { | ||
3126 | if(nSilenceTrackMS <= 0 || !nSampleRate || | ||
3127 | (bNoSilenceIfTime && bTimeNotDefault)) | ||
3128 | { | ||
3129 | nSilentSampleMax = 0; | ||
3130 | return; | ||
3131 | } | ||
3132 | |||
3133 | nSilentSampleMax = nSilenceTrackMS * nSampleRate / 500; | ||
3134 | nSilentSampleMax /= 2; | ||
3135 | } | ||
3136 | |||
3137 | void RebuildOutputTables(void) { | ||
3138 | int32_t i,j; | ||
3139 | float l[3]; | ||
3140 | int32_t v; | ||
3141 | int32_t temp; | ||
3142 | float ftemp; | ||
3143 | |||
3144 | /* tnd */ | ||
3145 | for(i = 0; i < 3; i++) | ||
3146 | { | ||
3147 | l[i] = 255; | ||
3148 | } | ||
3149 | |||
3150 | for(i = 0; i < 0x8000; i++) | ||
3151 | { | ||
3152 | ftemp = (l[0] * (i >> 11)) / 2097885; | ||
3153 | ftemp += (l[1] * ((i >> 7) & 0x0F)) / 3121455; | ||
3154 | ftemp += (l[2] * (i & 0x7F)) / 5772690; | ||
3155 | |||
3156 | if(!ftemp) | ||
3157 | main_nOutputTable_L[i] = 0; | ||
3158 | else | ||
3159 | main_nOutputTable_L[i] = | ||
3160 | (int16_t)(2396850 / ((1.0f / ftemp) + 100)); | ||
3161 | } | ||
3162 | |||
3163 | /* squares */ | ||
3164 | for(i = 0; i < 2; i++) | ||
3165 | { | ||
3166 | l[i] = 255; | ||
3167 | } | ||
3168 | |||
3169 | for(i = 0; i < 0x100; i++) | ||
3170 | { | ||
3171 | temp = (int32_t)(l[0] * (i >> 4)); | ||
3172 | temp += (int32_t)(l[1] * (i & 0x0F)); | ||
3173 | |||
3174 | if(!temp) | ||
3175 | Squares_nOutputTable_L[i] = 0; | ||
3176 | else | ||
3177 | Squares_nOutputTable_L[i] = 1438200 / ((2072640 / temp) + 100); | ||
3178 | |||
3179 | } | ||
3180 | |||
3181 | /* TODO: only one table needed for both */ | ||
3182 | /* VRC6 Pulse 1,2 */ | ||
3183 | /*CalculateChannelVolume(1875,&tl,255);*/ | ||
3184 | for(i = 0; i < 0x10; i++) | ||
3185 | { | ||
3186 | VRC6Pulse_nOutputTable_L[0][i] = VRC6Pulse_nOutputTable_L[1][i] = | ||
3187 | 1875 * i / 0x0F; | ||
3188 | } | ||
3189 | /* VRC6 Saw */ | ||
3190 | /*CalculateChannelVolume(3750,&tl,255);*/ | ||
3191 | for(i = 0; i < 0x20; i++) | ||
3192 | { | ||
3193 | VRC6Saw_nOutputTable_L[i] = 3750 * i / 0x1F; | ||
3194 | } | ||
3195 | |||
3196 | /* TODO: only one table needed for all 8 */ | ||
3197 | /* N106 channels */ | ||
3198 | for(v = 0; v < 8; v++) | ||
3199 | { | ||
3200 | /*CalculateChannelVolume(3000,&tl,255); | ||
3201 | this amplitude is just a guess */ | ||
3202 | |||
3203 | for(i = 0; i < 0x10; i++) | ||
3204 | { | ||
3205 | for(j = 0; j < 0x10; j++) | ||
3206 | { | ||
3207 | N106_nOutputTable_L[v][i][j] = (3000 * i * j) / 0xE1; | ||
3208 | } | ||
3209 | } | ||
3210 | } | ||
3211 | |||
3212 | /* TODO: only one table needed for all 3 */ | ||
3213 | /* FME-07 Square A,B,C */ | ||
3214 | /*CalculateChannelVolume(3000,&tl,255);*/ | ||
3215 | FME07_nOutputTable_L[0][15] = FME07_nOutputTable_L[1][15] = | ||
3216 | FME07_nOutputTable_L[2][15] = 3000; | ||
3217 | FME07_nOutputTable_L[0][0] = FME07_nOutputTable_L[1][0] = | ||
3218 | FME07_nOutputTable_L[2][0] = 0; | ||
3219 | for(i = 14; i > 0; i--) | ||
3220 | { | ||
3221 | FME07_nOutputTable_L[0][i] = FME07_nOutputTable_L[1][i] = | ||
3222 | FME07_nOutputTable_L[2][i] = FME07_nOutputTable_L[0][i + 1] * 80 / 100; | ||
3223 | } | ||
3224 | |||
3225 | /* | ||
3226 | * FDS | ||
3227 | */ | ||
3228 | /* this base volume (4000) is just a guess to what sounds right. | ||
3229 | * Given the number of steps available in an FDS wave... it seems like | ||
3230 | * it should be much much more... but then it's TOO loud. | ||
3231 | */ | ||
3232 | /*CalculateChannelVolume(4000,&tl,255);*/ | ||
3233 | for(i = 0; i < 0x21; i++) | ||
3234 | { | ||
3235 | for(j = 0; j < 0x40; j++) | ||
3236 | { | ||
3237 | FDS_nOutputTable_L[0][i][j] = | ||
3238 | (4000 * i * j * 30) / (0x21 * 0x40 * 30); | ||
3239 | FDS_nOutputTable_L[1][i][j] = | ||
3240 | (4000 * i * j * 20) / (0x21 * 0x40 * 30); | ||
3241 | FDS_nOutputTable_L[2][i][j] = | ||
3242 | (4000 * i * j * 15) / (0x21 * 0x40 * 30); | ||
3243 | FDS_nOutputTable_L[3][i][j] = | ||
3244 | (4000 * i * j * 12) / (0x21 * 0x40 * 30); | ||
3245 | } | ||
3246 | } | ||
3247 | } | ||
3248 | |||
3249 | /* | ||
3250 | * GetPlayCalls | ||
3251 | */ | ||
3252 | |||
3253 | float GetPlayCalls() | ||
3254 | { | ||
3255 | if(!nTicksPerPlay) return 0; | ||
3256 | |||
3257 | return ((float)nTotalPlays) + | ||
3258 | (1.0f - (nTicksUntilNextPlay*1.0f / nTicksPerPlay)); | ||
3259 | } | ||
3260 | |||
3261 | /* | ||
3262 | * GetWrittenTime | ||
3263 | */ | ||
3264 | uint32_t GetWrittenTime(float basedplayspersec /* = 0 */) | ||
3265 | { | ||
3266 | if(basedplayspersec <= 0) | ||
3267 | basedplayspersec = GetPlaybackSpeed(); | ||
3268 | |||
3269 | if(basedplayspersec <= 0) | ||
3270 | return 0; | ||
3271 | |||
3272 | return (uint32_t)((GetPlayCalls() * 1000) / basedplayspersec); | ||
3273 | } | ||
3274 | |||
3275 | /* | ||
3276 | * StopFade | ||
3277 | */ | ||
3278 | void StopFade() | ||
3279 | { | ||
3280 | bFade = 0; | ||
3281 | fFadeVolume = 1; | ||
3282 | } | ||
3283 | |||
3284 | /* | ||
3285 | * SongCompleted | ||
3286 | */ | ||
3287 | |||
3288 | uint8_t SongCompleted() | ||
3289 | { | ||
3290 | if(!bFade) return 0; | ||
3291 | if(nTotalPlays >= nEndFade) return 1; | ||
3292 | if(nSilentSampleMax) return (nSilentSamples >= nSilentSampleMax); | ||
3293 | |||
3294 | return 0; | ||
3295 | } | ||
3296 | |||
3297 | /* | ||
3298 | * SetFade | ||
3299 | */ | ||
3300 | |||
3301 | void SetFade(int32_t fadestart,int32_t fadestop, | ||
3302 | uint8_t bNotDefault) /* play routine calls */ | ||
3303 | { | ||
3304 | if(fadestart < 0) fadestart = 0; | ||
3305 | if(fadestop < fadestart) fadestop = fadestart; | ||
3306 | |||
3307 | nStartFade = (uint32_t)fadestart; | ||
3308 | nEndFade = (uint32_t)fadestop; | ||
3309 | bFade = 1; | ||
3310 | bTimeNotDefault = bNotDefault; | ||
3311 | |||
3312 | RecalcSilenceTracker(); | ||
3313 | RecalculateFade(); | ||
3314 | } | ||
3315 | |||
3316 | /* | ||
3317 | * SetFadeTime | ||
3318 | */ | ||
3319 | |||
3320 | void SetFadeTime(uint32_t fadestart,uint32_t fadestop,float basedplays, | ||
3321 | uint8_t bNotDefault) /* time in MS */ | ||
3322 | { | ||
3323 | if(basedplays <= 0) | ||
3324 | basedplays = GetPlaybackSpeed(); | ||
3325 | if(basedplays <= 0) | ||
3326 | return; | ||
3327 | |||
3328 | SetFade((int32_t)(fadestart * basedplays / 1000), | ||
3329 | (int32_t)(fadestop * basedplays / 1000),bNotDefault); | ||
3330 | } | ||
3331 | |||
3332 | /* | ||
3333 | * RecalculateFade | ||
3334 | */ | ||
3335 | |||
3336 | void RecalculateFade() | ||
3337 | { | ||
3338 | if(!bFade) return; | ||
3339 | |||
3340 | /* make it hit silence a little before the song ends... | ||
3341 | otherwise we're not really fading OUT, we're just fading umm... | ||
3342 | quieter =P */ | ||
3343 | int32_t temp = (int32_t)(GetPlaybackSpeed() / 4); | ||
3344 | |||
3345 | if(nEndFade <= nStartFade) | ||
3346 | { | ||
3347 | nEndFade = nStartFade; | ||
3348 | fFadeChange = 1.0f; | ||
3349 | } | ||
3350 | else if((nEndFade - temp) <= nStartFade) | ||
3351 | fFadeChange = 1.0f; | ||
3352 | else | ||
3353 | fFadeChange = 1.0f / (nEndFade - nStartFade - temp); | ||
3354 | |||
3355 | if(nTotalPlays < nStartFade) | ||
3356 | fFadeVolume = 1.0f; | ||
3357 | else if(nTotalPlays >= nEndFade) | ||
3358 | fFadeVolume = 0.0f; | ||
3359 | else | ||
3360 | { | ||
3361 | fFadeVolume = 1.0f - ( (nTotalPlays - nStartFade + 1) * fFadeChange ); | ||
3362 | if(fFadeVolume < 0) | ||
3363 | fFadeVolume = 0; | ||
3364 | } | ||
3365 | |||
3366 | } | ||
3367 | |||
3368 | int32_t GetSamples(uint8_t* buffer,int32_t buffersize) | ||
3369 | { | ||
3370 | if(!buffer) return 0; | ||
3371 | if(buffersize < 16) return 0; | ||
3372 | if(!bTrackSelected) return 0; | ||
3373 | if(bFade && (nTotalPlays >= nEndFade)) return 0; | ||
3374 | if(bIsGeneratingSamples) return 0; | ||
3375 | |||
3376 | bIsGeneratingSamples = 1; | ||
3377 | |||
3378 | |||
3379 | pOutput = buffer; | ||
3380 | uint32_t runtocycle = | ||
3381 | (uint32_t)((buffersize / 2) * nTicksPerSample / 0x10000); | ||
3382 | nCPUCycle = nAPUCycle = 0; | ||
3383 | uint32_t tick; | ||
3384 | |||
3385 | while(1) | ||
3386 | { | ||
3387 | /*tick = (uint32_t)ceil(fTicksUntilNextPlay);*/ | ||
3388 | tick = (nTicksUntilNextPlay+0xffff)>>16; | ||
3389 | if((tick + nCPUCycle) > runtocycle) | ||
3390 | tick = runtocycle - nCPUCycle; | ||
3391 | |||
3392 | if(bCPUJammed) | ||
3393 | { | ||
3394 | nCPUCycle += tick; | ||
3395 | EmulateAPU(0); | ||
3396 | } | ||
3397 | else | ||
3398 | { | ||
3399 | tick = Emulate6502(tick + nCPUCycle); | ||
3400 | EmulateAPU(1); | ||
3401 | } | ||
3402 | |||
3403 | nTicksUntilNextPlay -= tick<<16; | ||
3404 | if(nTicksUntilNextPlay <= 0) | ||
3405 | { | ||
3406 | nTicksUntilNextPlay += nTicksPerPlay; | ||
3407 | if((bCPUJammed == 2) || bNoWaitForReturn) | ||
3408 | { | ||
3409 | regX = regY = regA = (bCleanAXY ? 0 : 0xCD); | ||
3410 | regPC = 0x5004; | ||
3411 | nTotalPlays++; | ||
3412 | bDMCPop_SamePlay = 0; | ||
3413 | bCPUJammed = 0; | ||
3414 | if(nForce4017Write == 1) WriteMemory_pAPU(0x4017,0x00); | ||
3415 | if(nForce4017Write == 2) WriteMemory_pAPU(0x4017,0x80); | ||
3416 | } | ||
3417 | |||
3418 | if(bFade && (nTotalPlays >= nStartFade)) | ||
3419 | { | ||
3420 | fFadeVolume -= fFadeChange; | ||
3421 | if(fFadeVolume < 0) | ||
3422 | fFadeVolume = 0; | ||
3423 | if(nTotalPlays >= nEndFade) | ||
3424 | break; | ||
3425 | } | ||
3426 | } | ||
3427 | |||
3428 | if(nCPUCycle >= runtocycle) | ||
3429 | break; | ||
3430 | } | ||
3431 | |||
3432 | nCPUCycle = nAPUCycle = 0; | ||
3433 | bIsGeneratingSamples = 0; | ||
3434 | |||
3435 | if(nSilentSampleMax && bFade) | ||
3436 | { | ||
3437 | int16_t* tempbuf = (int16_t*)buffer; | ||
3438 | while( ((uint8_t*)tempbuf) < pOutput) | ||
3439 | { | ||
3440 | if( (*tempbuf < -SILENCE_THRESHOLD) || | ||
3441 | (*tempbuf > SILENCE_THRESHOLD) ) | ||
3442 | nSilentSamples = 0; | ||
3443 | else | ||
3444 | { | ||
3445 | if(++nSilentSamples >= nSilentSampleMax) | ||
3446 | return (int32_t)( ((uint8_t*)tempbuf) - buffer); | ||
3447 | } | ||
3448 | tempbuf++; | ||
3449 | } | ||
3450 | } | ||
3451 | |||
3452 | return (int32_t)(pOutput - buffer); | ||
3453 | } | ||
3454 | |||
3455 | /****************** 6502 emulation ******************/ | ||
3456 | |||
3457 | /* Memory reading/writing and other defines */ | ||
3458 | |||
3459 | /* reads zero page memory */ | ||
3460 | #define Zp(a) pRAM[a] | ||
3461 | /* reads zero page memory in word form */ | ||
3462 | #define ZpWord(a) (Zp(a) | (Zp((uint8_t)(a + 1)) << 8)) | ||
3463 | /* reads memory */ | ||
3464 | #define Rd(a) ((ReadMemory[((uint16_t)(a)) >> 12])(a)) | ||
3465 | /* reads memory in word form */ | ||
3466 | #define RdWord(a) (Rd(a) | (Rd(a + 1) << 8)) | ||
3467 | /* writes memory */ | ||
3468 | #define Wr(a,v) (WriteMemory[((uint16_t)(a)) >> 12])(a,v) | ||
3469 | /* writes zero paged memory */ | ||
3470 | #define WrZ(a,v) pRAM[a] = v | ||
3471 | /* pushes a value onto the stack */ | ||
3472 | #define PUSH(v) pStack[SP--] = v | ||
3473 | /* pulls a value from the stack */ | ||
3474 | #define PULL(v) v = pStack[++SP] | ||
3475 | |||
3476 | /* Addressing Modes */ | ||
3477 | |||
3478 | /* first set - gets the value that's being addressed */ | ||
3479 | /*Immediate*/ | ||
3480 | #define Ad_VlIm() val = Rd(PC.W); PC.W++ | ||
3481 | /*Zero Page*/ | ||
3482 | #define Ad_VlZp() final.W = Rd(PC.W); val = Zp(final.W); PC.W++ | ||
3483 | /*Zero Page, X*/ | ||
3484 | #define Ad_VlZx() front.W = final.W = Rd(PC.W); final.B.l += X; \ | ||
3485 | val = Zp(final.B.l); PC.W++ | ||
3486 | /*Zero Page, Y*/ | ||
3487 | #define Ad_VlZy() front.W = final.W = Rd(PC.W); final.B.l += Y; \ | ||
3488 | val = Zp(final.B.l); PC.W++ | ||
3489 | /*Absolute*/ | ||
3490 | #define Ad_VlAb() final.W = RdWord(PC.W); val = Rd(final.W); PC.W += 2 | ||
3491 | /*Absolute, X [uses extra cycle if crossed page]*/ | ||
3492 | #define Ad_VlAx() front.W = final.W = RdWord(PC.W); final.W += X; PC.W += 2;\ | ||
3493 | if(front.B.h != final.B.h) nCPUCycle++; val = Rd(final.W) | ||
3494 | /*Absolute, X [uses extra cycle if crossed page]*/ | ||
3495 | #define Ad_VlAy() front.W = final.W = RdWord(PC.W); final.W += Y; PC.W += 2;\ | ||
3496 | if(front.B.h != final.B.h) nCPUCycle++; val = Rd(final.W) | ||
3497 | /*(Indirect, X)*/ | ||
3498 | #define Ad_VlIx() front.W = final.W = Rd(PC.W); final.B.l += X; PC.W++; \ | ||
3499 | final.W = ZpWord(final.B.l); val = Rd(final.W) | ||
3500 | /*(Indirect), Y [uses extra cycle if crossed page]*/ | ||
3501 | #define Ad_VlIy() val = Rd(PC.W); front.W = final.W = ZpWord(val); PC.W++;\ | ||
3502 | final.W += Y; if(final.B.h != front.B.h) nCPUCycle++; \ | ||
3503 | front.W = val; val = Rd(final.W) | ||
3504 | |||
3505 | /* second set - gets the ADDRESS that the mode is referring to (for operators | ||
3506 | * that write to memory) note that AbsoluteX, AbsoluteY, and | ||
3507 | * IndirectY modes do NOT check for page boundary crossing here | ||
3508 | * since that extra cycle isn't added for operators that write to | ||
3509 | * memory (it only applies to ones that only read from memory.. in | ||
3510 | * which case the 1st set should be used) | ||
3511 | */ | ||
3512 | /*Zero Page*/ | ||
3513 | #define Ad_AdZp() final.W = Rd(PC.W); PC.W++ | ||
3514 | /*Zero Page, X*/ | ||
3515 | #define Ad_AdZx() final.W = front.W = Rd(PC.W); final.B.l += X; PC.W++ | ||
3516 | /*Zero Page, Y*/ | ||
3517 | #define Ad_AdZy() final.W = front.W = Rd(PC.W); final.B.l += Y; PC.W++ | ||
3518 | /*Absolute*/ | ||
3519 | #define Ad_AdAb() final.W = RdWord(PC.W); PC.W += 2 | ||
3520 | /*Absolute, X*/ | ||
3521 | #define Ad_AdAx() front.W = final.W = RdWord(PC.W); PC.W += 2; \ | ||
3522 | final.W += X | ||
3523 | /*Absolute, Y*/ | ||
3524 | #define Ad_AdAy() front.W = final.W = RdWord(PC.W); PC.W += 2; \ | ||
3525 | final.W += Y | ||
3526 | /*(Indirect, X)*/ | ||
3527 | #define Ad_AdIx() front.W = final.W = Rd(PC.W); PC.W++; final.B.l += X; \ | ||
3528 | final.W = ZpWord(final.B.l) | ||
3529 | /*(Indirect), Y*/ | ||
3530 | #define Ad_AdIy() front.W = Rd(PC.W); final.W = ZpWord(front.W) + Y; \ | ||
3531 | PC.W++ | ||
3532 | |||
3533 | /* third set - reads memory, performs the desired operation on the value, then | ||
3534 | * writes back to memory | ||
3535 | * used for operators that directly change memory (ASL, INC, DEC, etc) | ||
3536 | */ | ||
3537 | /*Zero Page*/ | ||
3538 | #define MRW_Zp(cmd) Ad_AdZp(); val = Zp(final.W); cmd(val); WrZ(final.W,val) | ||
3539 | /*Zero Page, X*/ | ||
3540 | #define MRW_Zx(cmd) Ad_AdZx(); val = Zp(final.W); cmd(val); WrZ(final.W,val) | ||
3541 | /*Zero Page, Y*/ | ||
3542 | #define MRW_Zy(cmd) Ad_AdZy(); val = Zp(final.W); cmd(val); WrZ(final.W,val) | ||
3543 | /*Absolute*/ | ||
3544 | #define MRW_Ab(cmd) Ad_AdAb(); val = Rd(final.W); cmd(val); Wr(final.W,val) | ||
3545 | /*Absolute, X*/ | ||
3546 | #define MRW_Ax(cmd) Ad_AdAx(); val = Rd(final.W); cmd(val); Wr(final.W,val) | ||
3547 | /*Absolute, Y*/ | ||
3548 | #define MRW_Ay(cmd) Ad_AdAy(); val = Rd(final.W); cmd(val); Wr(final.W,val) | ||
3549 | /*(Indirect, X)*/ | ||
3550 | #define MRW_Ix(cmd) Ad_AdIx(); val = Rd(final.W); cmd(val); Wr(final.W,val) | ||
3551 | /*(Indirect), Y*/ | ||
3552 | #define MRW_Iy(cmd) Ad_AdIy(); val = Rd(final.W); cmd(val); Wr(final.W,val) | ||
3553 | |||
3554 | /* Relative modes are special in that they're only used by branch commands | ||
3555 | * this macro handles the jump, and should only be called if the branch | ||
3556 | * condition was true if the branch condition was false, the PC must be | ||
3557 | * incremented | ||
3558 | */ | ||
3559 | |||
3560 | #define RelJmp(cond) val = Rd(PC.W); PC.W++; final.W = PC.W + (int8_t)(val);\ | ||
3561 | if(cond) {\ | ||
3562 | nCPUCycle += ((final.B.h != PC.B.h) ? 2 : 1);\ | ||
3563 | PC.W = final.W; } | ||
3564 | |||
3565 | /* Status Flags */ | ||
3566 | |||
3567 | #define C_FLAG 0x01 /* carry flag */ | ||
3568 | #define Z_FLAG 0x02 /* zero flag */ | ||
3569 | #define I_FLAG 0x04 /* mask interrupt flag */ | ||
3570 | #define D_FLAG 0x08 /* decimal flag (decimal mode is unsupported on | ||
3571 | NES) */ | ||
3572 | #define B_FLAG 0x10 /* break flag (not really in the status register | ||
3573 | It's value in ST is never used. When ST is | ||
3574 | put in memory (by an interrupt or PHP), this | ||
3575 | flag is set only if BRK was called) | ||
3576 | ** also when PHP is called due to a bug */ | ||
3577 | #define R_FLAG 0x20 /* reserved flag (not really in the register. | ||
3578 | It's value is never used. | ||
3579 | Whenever ST is put in memory, | ||
3580 | this flag is always set) */ | ||
3581 | #define V_FLAG 0x40 /* overflow flag */ | ||
3582 | #define N_FLAG 0x80 /* sign flag */ | ||
3583 | |||
3584 | |||
3585 | /* Lookup Tables */ | ||
3586 | |||
3587 | /* the number of CPU cycles used for each instruction */ | ||
3588 | static const uint8_t CPU_Cycles[0x100] = { | ||
3589 | 7,6,0,8,3,3,5,5,3,2,2,2,4,4,6,6, | ||
3590 | 2,5,0,8,4,4,6,6,2,4,2,7,4,4,7,7, | ||
3591 | 6,6,0,8,3,3,5,5,4,2,2,2,4,4,6,6, | ||
3592 | 2,5,0,8,4,4,6,6,2,4,2,7,4,4,7,7, | ||
3593 | 6,6,0,8,3,3,5,5,3,2,2,2,3,4,6,6, | ||
3594 | 2,5,0,8,4,4,6,6,2,4,2,7,4,4,7,7, | ||
3595 | 6,6,0,8,3,3,5,5,4,2,2,2,5,4,6,6, | ||
3596 | 2,5,0,8,4,4,6,6,2,4,2,7,4,4,7,7, | ||
3597 | 2,6,2,6,3,3,3,3,2,2,2,2,4,4,4,4, | ||
3598 | 2,6,0,6,4,4,4,4,2,5,2,5,5,5,5,5, | ||
3599 | 2,6,2,6,3,3,3,3,2,2,2,2,4,4,4,4, | ||
3600 | 2,5,0,5,4,4,4,4,2,4,2,4,4,4,4,4, | ||
3601 | 2,6,2,8,3,3,5,5,2,2,2,2,4,4,6,6, | ||
3602 | 2,5,0,8,4,4,6,6,2,4,2,7,4,4,7,7, | ||
3603 | 2,6,2,8,3,3,5,5,2,2,2,2,4,4,6,6, | ||
3604 | 2,5,0,8,4,4,6,6,2,4,2,7,4,4,7,7 }; | ||
3605 | |||
3606 | /* the status of the NZ flags for the given value */ | ||
3607 | static const uint8_t NZTable[0x100] = { | ||
3608 | Z_FLAG,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | ||
3609 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | ||
3610 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | ||
3611 | 0,0,0,0,0,0,0,0,0,0,0, | ||
3612 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3613 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3614 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3615 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3616 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3617 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3618 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3619 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3620 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3621 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3622 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG, | ||
3623 | N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG,N_FLAG }; | ||
3624 | |||
3625 | /* A quick macro for working with the above table */ | ||
3626 | #define UpdateNZ(v) ST = (ST & ~(N_FLAG|Z_FLAG)) | NZTable[v] | ||
3627 | |||
3628 | |||
3629 | /* | ||
3630 | * Opcodes | ||
3631 | * | ||
3632 | * These opcodes perform the action with the given value (changing that | ||
3633 | * value if necessary). Registers and flags associated with the operation | ||
3634 | * are changed accordingly. There are a few exceptions which will be noted | ||
3635 | * when they arise | ||
3636 | */ | ||
3637 | |||
3638 | |||
3639 | /* ADC | ||
3640 | Adds the value to the accumulator with carry | ||
3641 | Changes: A, NVZC | ||
3642 | - Decimal mode not supported on the NES | ||
3643 | - Due to a bug, NVZ flags are not altered if the Decimal flag is on | ||
3644 | --(taken out)-- */ | ||
3645 | #define ADC() \ | ||
3646 | tw.W = A + val + (ST & C_FLAG); \ | ||
3647 | ST = (ST & (I_FLAG|D_FLAG)) | tw.B.h | NZTable[tw.B.l] | \ | ||
3648 | ( (0x80 & ~(A ^ val) & (A ^ tw.B.l)) ? V_FLAG : 0 ); \ | ||
3649 | A = tw.B.l | ||
3650 | |||
3651 | /* AND | ||
3652 | Combines the value with the accumulator using a bitwise AND operation | ||
3653 | Changes: A, NZ */ | ||
3654 | #define AND() \ | ||
3655 | A &= val; \ | ||
3656 | UpdateNZ(A) | ||
3657 | |||
3658 | /* ASL | ||
3659 | Left shifts the value 1 bit. The bit that gets shifted out goes to | ||
3660 | the carry flag. | ||
3661 | Changes: value, NZC */ | ||
3662 | #define ASL(value) \ | ||
3663 | tw.W = value << 1; \ | ||
3664 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | tw.B.h | NZTable[tw.B.l]; \ | ||
3665 | value = tw.B.l | ||
3666 | |||
3667 | /* BIT | ||
3668 | Compares memory with the accumulator with an AND operation, but changes | ||
3669 | neither. | ||
3670 | The two high bits of memory get transferred to the status reg | ||
3671 | Z is set if the AND operation yielded zero, otherwise it's cleared | ||
3672 | Changes: NVZ */ | ||
3673 | #define BIT() \ | ||
3674 | ST = (ST & ~(N_FLAG|V_FLAG|Z_FLAG)) | (val & (N_FLAG|V_FLAG)) | \ | ||
3675 | ((A & val) ? 0 : Z_FLAG) | ||
3676 | |||
3677 | /* CMP, CPX, CPY | ||
3678 | Compares memory with the given register with a subtraction operation. | ||
3679 | Flags are set accordingly depending on the result: | ||
3680 | Reg < Memory: Z=0, C=0 | ||
3681 | Reg = Memory: Z=1, C=1 | ||
3682 | Reg > Memory: Z=0, C=1 | ||
3683 | N is set according to the result of the subtraction operation | ||
3684 | Changes: NZC | ||
3685 | |||
3686 | NOTE -- CMP, CPX, CPY all share this same routine, so the desired | ||
3687 | register (A, X, or Y respectively) must be given when calling | ||
3688 | this macro... as well as the memory to compare it with. */ | ||
3689 | #define CMP(reg) \ | ||
3690 | tw.W = reg - val; \ | ||
3691 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | (tw.B.h ? 0 : C_FLAG) | \ | ||
3692 | NZTable[tw.B.l] | ||
3693 | |||
3694 | /* DEC, DEX, DEY | ||
3695 | Decriments a value by one. | ||
3696 | Changes: value, NZ */ | ||
3697 | #define DEC(value) \ | ||
3698 | value--; \ | ||
3699 | UpdateNZ(value) | ||
3700 | |||
3701 | /* EOR | ||
3702 | Combines a value with the accumulator using a bitwise exclusive-OR | ||
3703 | operation | ||
3704 | Changes: A, NZ */ | ||
3705 | #define EOR() \ | ||
3706 | A ^= val; \ | ||
3707 | UpdateNZ(A) | ||
3708 | |||
3709 | /* INC, INX, INY | ||
3710 | Incriments a value by one. | ||
3711 | Changes: value, NZ */ | ||
3712 | #define INC(value) \ | ||
3713 | value++; \ | ||
3714 | UpdateNZ(value) | ||
3715 | |||
3716 | /* LSR | ||
3717 | Shifts value one bit to the right. Bit that gets shifted out goes to | ||
3718 | the Carry flag. | ||
3719 | Changes: value, NZC */ | ||
3720 | #define LSR(value) \ | ||
3721 | tw.W = value >> 1; \ | ||
3722 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | NZTable[tw.B.l] | \ | ||
3723 | (value & 0x01); \ | ||
3724 | value = tw.B.l | ||
3725 | |||
3726 | /* ORA | ||
3727 | Combines a value with the accumulator using a bitwise inclusive-OR | ||
3728 | operation | ||
3729 | Changes: A, NZ */ | ||
3730 | #define ORA() \ | ||
3731 | A |= val; \ | ||
3732 | UpdateNZ(A) | ||
3733 | |||
3734 | /* ROL | ||
3735 | Rotates a value one bit to the left: | ||
3736 | C <- 7<-6<-5<-4<-3<-2<-1<-0 <- C | ||
3737 | Changes: value, NZC */ | ||
3738 | #define ROL(value) \ | ||
3739 | tw.W = (value << 1) | (ST & 0x01); \ | ||
3740 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | NZTable[tw.B.l] | tw.B.h; \ | ||
3741 | value = tw.B.l | ||
3742 | |||
3743 | /* ROR | ||
3744 | Rotates a value one bit to the right: | ||
3745 | C -> 7->6->5->4->3->2->1->0 -> C | ||
3746 | Changes: value, NZC */ | ||
3747 | #define ROR(value) \ | ||
3748 | tw.W = (value >> 1) | (ST << 7); \ | ||
3749 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | NZTable[tw.B.l] | \ | ||
3750 | (value & 0x01); \ | ||
3751 | value = tw.B.l | ||
3752 | |||
3753 | /* SBC | ||
3754 | Subtracts a value from the accumulator with borrow (inverted carry) | ||
3755 | Changes: A, NVZC | ||
3756 | - Decimal mode not supported on the NES | ||
3757 | - Due to a bug, NVZ flags are not altered if the Decimal flag is on | ||
3758 | --(taken out)-- */ | ||
3759 | #define SBC() \ | ||
3760 | tw.W = A - val - ((ST & C_FLAG) ? 0 : 1); \ | ||
3761 | ST = (ST & (I_FLAG|D_FLAG)) | (tw.B.h ? 0 : C_FLAG) | NZTable[tw.B.l] | \ | ||
3762 | (((A ^ val) & (A ^ tw.B.l) & 0x80) ? V_FLAG : 0); \ | ||
3763 | A = tw.B.l | ||
3764 | |||
3765 | /* Undocumented Opcodes | ||
3766 | * | ||
3767 | * These opcodes are not included in the official specifications. However, | ||
3768 | * some of the unused opcode values perform operations which have since been | ||
3769 | * documented. | ||
3770 | */ | ||
3771 | |||
3772 | |||
3773 | /* ASO | ||
3774 | Left shifts a value, then ORs the result with the accumulator | ||
3775 | Changes: value, A, NZC */ | ||
3776 | #define ASO(value) \ | ||
3777 | tw.W = value << 1; \ | ||
3778 | A |= tw.B.l; \ | ||
3779 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | NZTable[A] | tw.B.h; \ | ||
3780 | value = tw.B.l | ||
3781 | |||
3782 | /* RLA | ||
3783 | Roll memory left 1 bit, then AND the result with the accumulator | ||
3784 | Changes: value, A, NZC */ | ||
3785 | #define RLA(value) \ | ||
3786 | tw.W = (value << 1) | (ST & 0x01); \ | ||
3787 | A &= tw.B.l; \ | ||
3788 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | NZTable[A] | tw.B.h; \ | ||
3789 | value = tw.B.l | ||
3790 | |||
3791 | /* LSE | ||
3792 | Right shifts a value one bit, then EORs the result with the accumulator | ||
3793 | Changes: value, A, NZC */ | ||
3794 | #define LSE(value) \ | ||
3795 | tw.W = value >> 1; \ | ||
3796 | A ^= tw.B.l; \ | ||
3797 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | NZTable[A] | (value & 0x01); \ | ||
3798 | value = tw.B.l | ||
3799 | |||
3800 | /* RRA | ||
3801 | Roll memory right one bit, then ADC the result | ||
3802 | Changes: value, A, NVZC */ | ||
3803 | #define RRA(value) \ | ||
3804 | tw.W = (value >> 1) | (ST << 7); \ | ||
3805 | ST = (ST & ~C_FLAG) | (value & 0x01); \ | ||
3806 | value = tw.B.l; \ | ||
3807 | ADC() | ||
3808 | |||
3809 | /* AXS | ||
3810 | ANDs the contents of the X and A registers and stores the result | ||
3811 | int memory. | ||
3812 | Changes: value [DOES NOT CHANGE X, A, or any flags] */ | ||
3813 | #define AXS(value) \ | ||
3814 | value = A & X | ||
3815 | |||
3816 | /* DCM | ||
3817 | Decriments a value and compares it with the A register. | ||
3818 | Changes: value, NZC */ | ||
3819 | #define DCM(value) \ | ||
3820 | value--; \ | ||
3821 | CMP(A) | ||
3822 | |||
3823 | /* INS | ||
3824 | Incriments a value then SBCs it | ||
3825 | Changes: value, A, NVZC */ | ||
3826 | #define INS(value) \ | ||
3827 | value++; \ | ||
3828 | SBC() | ||
3829 | |||
3830 | /* AXA */ | ||
3831 | #define AXA(value) \ | ||
3832 | value = A & X & (Rd(PC.W - 1) + 1) | ||
3833 | |||
3834 | |||
3835 | /* The 6502 emulation function! */ | ||
3836 | |||
3837 | union TWIN front; | ||
3838 | union TWIN final; | ||
3839 | uint8_t val; | ||
3840 | uint8_t op; | ||
3841 | |||
3842 | uint32_t Emulate6502(uint32_t runto) | ||
3843 | { | ||
3844 | /* If the CPU is jammed... don't bother */ | ||
3845 | if(bCPUJammed == 1) | ||
3846 | return 0; | ||
3847 | |||
3848 | register union TWIN tw; /* used in calculations */ | ||
3849 | register uint8_t ST = regP; | ||
3850 | register union TWIN PC; | ||
3851 | uint8_t SP = regSP; | ||
3852 | register uint8_t A = regA; | ||
3853 | register uint8_t X = regX; | ||
3854 | register uint8_t Y = regY; | ||
3855 | union TWIN front; | ||
3856 | union TWIN final; | ||
3857 | PC.W = regPC; | ||
3858 | |||
3859 | uint32_t ret = nCPUCycle; | ||
3860 | |||
3861 | ENTER_TIMER(cpu); | ||
3862 | |||
3863 | /* Start the loop */ | ||
3864 | |||
3865 | while(nCPUCycle < runto) | ||
3866 | { | ||
3867 | op = Rd(PC.W); | ||
3868 | PC.W++; | ||
3869 | |||
3870 | nCPUCycle += CPU_Cycles[op]; | ||
3871 | switch(op) | ||
3872 | { | ||
3873 | /* Documented Opcodes first */ | ||
3874 | |||
3875 | /* Flag setting/clearing */ | ||
3876 | case 0x18: ST &= ~C_FLAG; break; /* CLC */ | ||
3877 | case 0x38: ST |= C_FLAG; break; /* SEC */ | ||
3878 | case 0x58: ST &= ~I_FLAG; break; /* CLI */ | ||
3879 | case 0x78: ST |= I_FLAG; break; /* SEI */ | ||
3880 | case 0xB8: ST &= ~V_FLAG; break; /* CLV */ | ||
3881 | case 0xD8: ST &= ~D_FLAG; break; /* CLD */ | ||
3882 | case 0xF8: ST |= D_FLAG; break; /* SED */ | ||
3883 | |||
3884 | /* Branch commands */ | ||
3885 | case 0x10: RelJmp(!(ST & N_FLAG)); break; /* BPL */ | ||
3886 | case 0x30: RelJmp( (ST & N_FLAG)); break; /* BMI */ | ||
3887 | case 0x50: RelJmp(!(ST & V_FLAG)); break; /* BVC */ | ||
3888 | case 0x70: RelJmp( (ST & V_FLAG)); break; /* BVS */ | ||
3889 | case 0x90: RelJmp(!(ST & C_FLAG)); break; /* BCC */ | ||
3890 | case 0xB0: RelJmp( (ST & C_FLAG)); break; /* BCS */ | ||
3891 | case 0xD0: RelJmp(!(ST & Z_FLAG)); break; /* BNE */ | ||
3892 | case 0xF0: RelJmp( (ST & Z_FLAG)); break; /* BEQ */ | ||
3893 | |||
3894 | /* Direct stack alteration commands (push/pull commands) */ | ||
3895 | case 0x08: PUSH(ST | R_FLAG | B_FLAG); break; /* PHP */ | ||
3896 | case 0x28: PULL(ST); break; /* PLP */ | ||
3897 | case 0x48: PUSH(A); break; /* PHA */ | ||
3898 | case 0x68: PULL(A); UpdateNZ(A); break; /* PLA */ | ||
3899 | |||
3900 | /* Register Transfers */ | ||
3901 | case 0x8A: A = X; UpdateNZ(A); break; /* TXA */ | ||
3902 | case 0x98: A = Y; UpdateNZ(A); break; /* TYA */ | ||
3903 | case 0x9A: SP = X; break; /* TXS */ | ||
3904 | case 0xA8: Y = A; UpdateNZ(A); break; /* TAY */ | ||
3905 | case 0xAA: X = A; UpdateNZ(A); break; /* TAX */ | ||
3906 | case 0xBA: X = SP; UpdateNZ(X); break; /* TSX */ | ||
3907 | |||
3908 | /* Other commands */ | ||
3909 | |||
3910 | /* ADC */ | ||
3911 | case 0x61: Ad_VlIx(); ADC(); break; | ||
3912 | case 0x65: Ad_VlZp(); ADC(); break; | ||
3913 | case 0x69: Ad_VlIm(); ADC(); break; | ||
3914 | case 0x6D: Ad_VlAb(); ADC(); break; | ||
3915 | case 0x71: Ad_VlIy(); ADC(); break; | ||
3916 | case 0x75: Ad_VlZx(); ADC(); break; | ||
3917 | case 0x79: Ad_VlAy(); ADC(); break; | ||
3918 | case 0x7D: Ad_VlAx(); ADC(); break; | ||
3919 | |||
3920 | /* AND */ | ||
3921 | case 0x21: Ad_VlIx(); AND(); break; | ||
3922 | case 0x25: Ad_VlZp(); AND(); break; | ||
3923 | case 0x29: Ad_VlIm(); AND(); break; | ||
3924 | case 0x2D: Ad_VlAb(); AND(); break; | ||
3925 | case 0x31: Ad_VlIy(); AND(); break; | ||
3926 | case 0x35: Ad_VlZx(); AND(); break; | ||
3927 | case 0x39: Ad_VlAy(); AND(); break; | ||
3928 | case 0x3D: Ad_VlAx(); AND(); break; | ||
3929 | |||
3930 | /* ASL */ | ||
3931 | case 0x0A: ASL(A); break; | ||
3932 | case 0x06: MRW_Zp(ASL); break; | ||
3933 | case 0x0E: MRW_Ab(ASL); break; | ||
3934 | case 0x16: MRW_Zx(ASL); break; | ||
3935 | case 0x1E: MRW_Ax(ASL); break; | ||
3936 | |||
3937 | /* BIT */ | ||
3938 | case 0x24: Ad_VlZp(); BIT(); break; | ||
3939 | case 0x2C: Ad_VlAb(); BIT(); break; | ||
3940 | |||
3941 | /* BRK */ | ||
3942 | case 0x00: | ||
3943 | if(bIgnoreBRK) | ||
3944 | break; | ||
3945 | PC.W++; /*BRK has a padding byte*/ | ||
3946 | PUSH(PC.B.h); /*push high byte of the return address*/ | ||
3947 | PUSH(PC.B.l); /*push low byte of return address*/ | ||
3948 | PUSH(ST | R_FLAG | B_FLAG); /*push processor status with R|B flags*/ | ||
3949 | ST |= I_FLAG; /*mask interrupts*/ | ||
3950 | PC.W = RdWord(0xFFFE); /*read the IRQ vector and jump to it*/ | ||
3951 | |||
3952 | /* extra check to make sure we didn't hit an infinite BRK loop */ | ||
3953 | if(!Rd(PC.W)) /* next command will be BRK */ | ||
3954 | { | ||
3955 | /* the CPU will endlessly loop... | ||
3956 | just jam it to ease processing power */ | ||
3957 | bCPUJammed = 1; | ||
3958 | goto jammed; | ||
3959 | } | ||
3960 | break; | ||
3961 | |||
3962 | /* CMP */ | ||
3963 | case 0xC1: Ad_VlIx(); CMP(A); break; | ||
3964 | case 0xC5: Ad_VlZp(); CMP(A); break; | ||
3965 | case 0xC9: Ad_VlIm(); CMP(A); break; | ||
3966 | case 0xCD: Ad_VlAb(); CMP(A); break; | ||
3967 | case 0xD1: Ad_VlIy(); CMP(A); break; | ||
3968 | case 0xD5: Ad_VlZx(); CMP(A); break; | ||
3969 | case 0xD9: Ad_VlAy(); CMP(A); break; | ||
3970 | case 0xDD: Ad_VlAx(); CMP(A); break; | ||
3971 | |||
3972 | /* CPX */ | ||
3973 | case 0xE0: Ad_VlIm(); CMP(X); break; | ||
3974 | case 0xE4: Ad_VlZp(); CMP(X); break; | ||
3975 | case 0xEC: Ad_VlAb(); CMP(X); break; | ||
3976 | |||
3977 | /* CPY */ | ||
3978 | case 0xC0: Ad_VlIm(); CMP(Y); break; | ||
3979 | case 0xC4: Ad_VlZp(); CMP(Y); break; | ||
3980 | case 0xCC: Ad_VlAb(); CMP(Y); break; | ||
3981 | |||
3982 | /* DEC */ | ||
3983 | case 0xCA: DEC(X); break; /* DEX */ | ||
3984 | case 0x88: DEC(Y); break; /* DEY */ | ||
3985 | case 0xC6: MRW_Zp(DEC); break; | ||
3986 | case 0xCE: MRW_Ab(DEC); break; | ||
3987 | case 0xD6: MRW_Zx(DEC); break; | ||
3988 | case 0xDE: MRW_Ax(DEC); break; | ||
3989 | |||
3990 | /* EOR */ | ||
3991 | case 0x41: Ad_VlIx(); EOR(); break; | ||
3992 | case 0x45: Ad_VlZp(); EOR(); break; | ||
3993 | case 0x49: Ad_VlIm(); EOR(); break; | ||
3994 | case 0x4D: Ad_VlAb(); EOR(); break; | ||
3995 | case 0x51: Ad_VlIy(); EOR(); break; | ||
3996 | case 0x55: Ad_VlZx(); EOR(); break; | ||
3997 | case 0x59: Ad_VlAy(); EOR(); break; | ||
3998 | case 0x5D: Ad_VlAx(); EOR(); break; | ||
3999 | |||
4000 | /* INC */ | ||
4001 | case 0xE8: INC(X); break; /* INX */ | ||
4002 | case 0xC8: INC(Y); break; /* INY */ | ||
4003 | case 0xE6: MRW_Zp(INC); break; | ||
4004 | case 0xEE: MRW_Ab(INC); break; | ||
4005 | case 0xF6: MRW_Zx(INC); break; | ||
4006 | case 0xFE: MRW_Ax(INC); break; | ||
4007 | |||
4008 | /* JMP */ | ||
4009 | /* Absolute JMP */ | ||
4010 | case 0x4C: final.W = RdWord(PC.W); PC.W = final.W; val = 0; break; | ||
4011 | /* Indirect JMP -- must take caution: | ||
4012 | Indirection at 01FF will read from 01FF and 0100 (not 0200) */ | ||
4013 | case 0x6C: front.W = final.W = RdWord(PC.W); | ||
4014 | PC.B.l = Rd(final.W); final.B.l++; | ||
4015 | PC.B.h = Rd(final.W); final.W = PC.W; | ||
4016 | break; | ||
4017 | /* JSR */ | ||
4018 | case 0x20: | ||
4019 | val = 0; | ||
4020 | final.W = RdWord(PC.W); | ||
4021 | PC.W++; /* JSR only increments the return address by one. | ||
4022 | It's incremented again upon RTS */ | ||
4023 | PUSH(PC.B.h); /* push high byte of return address */ | ||
4024 | PUSH(PC.B.l); /* push low byte of return address */ | ||
4025 | PC.W = final.W; | ||
4026 | break; | ||
4027 | |||
4028 | /* LDA */ | ||
4029 | case 0xA1: Ad_VlIx(); A = val; UpdateNZ(A); break; | ||
4030 | case 0xA5: Ad_VlZp(); A = val; UpdateNZ(A); break; | ||
4031 | case 0xA9: Ad_VlIm(); A = val; UpdateNZ(A); break; | ||
4032 | case 0xAD: Ad_VlAb(); A = val; UpdateNZ(A); break; | ||
4033 | case 0xB1: Ad_VlIy(); A = val; UpdateNZ(A); break; | ||
4034 | case 0xB5: Ad_VlZx(); A = val; UpdateNZ(A); break; | ||
4035 | case 0xB9: Ad_VlAy(); A = val; UpdateNZ(A); break; | ||
4036 | case 0xBD: Ad_VlAx(); A = val; UpdateNZ(A); break; | ||
4037 | |||
4038 | /* LDX */ | ||
4039 | case 0xA2: Ad_VlIm(); X = val; UpdateNZ(X); break; | ||
4040 | case 0xA6: Ad_VlZp(); X = val; UpdateNZ(X); break; | ||
4041 | case 0xAE: Ad_VlAb(); X = val; UpdateNZ(X); break; | ||
4042 | case 0xB6: Ad_VlZy(); X = val; UpdateNZ(X); break; | ||
4043 | case 0xBE: Ad_VlAy(); X = val; UpdateNZ(X); break; | ||
4044 | |||
4045 | /* LDY */ | ||
4046 | case 0xA0: Ad_VlIm(); Y = val; UpdateNZ(Y); break; | ||
4047 | case 0xA4: Ad_VlZp(); Y = val; UpdateNZ(Y); break; | ||
4048 | case 0xAC: Ad_VlAb(); Y = val; UpdateNZ(Y); break; | ||
4049 | case 0xB4: Ad_VlZx(); Y = val; UpdateNZ(Y); break; | ||
4050 | case 0xBC: Ad_VlAx(); Y = val; UpdateNZ(Y); break; | ||
4051 | |||
4052 | /* LSR */ | ||
4053 | case 0x4A: LSR(A); break; | ||
4054 | case 0x46: MRW_Zp(LSR); break; | ||
4055 | case 0x4E: MRW_Ab(LSR); break; | ||
4056 | case 0x56: MRW_Zx(LSR); break; | ||
4057 | case 0x5E: MRW_Ax(LSR); break; | ||
4058 | |||
4059 | /* NOP */ | ||
4060 | case 0xEA: | ||
4061 | |||
4062 | /* --- Undocumented --- | ||
4063 | These opcodes perform the same action as NOP */ | ||
4064 | case 0x1A: case 0x3A: case 0x5A: | ||
4065 | case 0x7A: case 0xDA: case 0xFA: break; | ||
4066 | |||
4067 | /* ORA */ | ||
4068 | case 0x01: Ad_VlIx(); ORA(); break; | ||
4069 | case 0x05: Ad_VlZp(); ORA(); break; | ||
4070 | case 0x09: Ad_VlIm(); ORA(); break; | ||
4071 | case 0x0D: Ad_VlAb(); ORA(); break; | ||
4072 | case 0x11: Ad_VlIy(); ORA(); break; | ||
4073 | case 0x15: Ad_VlZx(); ORA(); break; | ||
4074 | case 0x19: Ad_VlAy(); ORA(); break; | ||
4075 | case 0x1D: Ad_VlAx(); ORA(); break; | ||
4076 | |||
4077 | /* ROL */ | ||
4078 | case 0x2A: ROL(A); break; | ||
4079 | case 0x26: MRW_Zp(ROL); break; | ||
4080 | case 0x2E: MRW_Ab(ROL); break; | ||
4081 | case 0x36: MRW_Zx(ROL); break; | ||
4082 | case 0x3E: MRW_Ax(ROL); break; | ||
4083 | |||
4084 | /* ROR */ | ||
4085 | case 0x6A: ROR(A); break; | ||
4086 | case 0x66: MRW_Zp(ROR); break; | ||
4087 | case 0x6E: MRW_Ab(ROR); break; | ||
4088 | case 0x76: MRW_Zx(ROR); break; | ||
4089 | case 0x7E: MRW_Ax(ROR); break; | ||
4090 | |||
4091 | /* RTI */ | ||
4092 | case 0x40: | ||
4093 | PULL(ST); /*pull processor status*/ | ||
4094 | PULL(PC.B.l); /*pull low byte of return address*/ | ||
4095 | PULL(PC.B.h); /*pull high byte of return address*/ | ||
4096 | break; | ||
4097 | |||
4098 | /* RTS */ | ||
4099 | case 0x60: | ||
4100 | PULL(PC.B.l); | ||
4101 | PULL(PC.B.h); | ||
4102 | PC.W++; /* the return address is one less of what it needs */ | ||
4103 | break; | ||
4104 | |||
4105 | /* SBC */ | ||
4106 | case 0xE1: Ad_VlIx(); SBC(); break; | ||
4107 | case 0xE5: Ad_VlZp(); SBC(); break; | ||
4108 | /* - Undocumented - EB performs the same operation as SBC immediate */ | ||
4109 | case 0xEB: | ||
4110 | case 0xE9: Ad_VlIm(); SBC(); break; | ||
4111 | case 0xED: Ad_VlAb(); SBC(); break; | ||
4112 | case 0xF1: Ad_VlIy(); SBC(); break; | ||
4113 | case 0xF5: Ad_VlZx(); SBC(); break; | ||
4114 | case 0xF9: Ad_VlAy(); SBC(); break; | ||
4115 | case 0xFD: Ad_VlAx(); SBC(); break; | ||
4116 | |||
4117 | /* STA */ | ||
4118 | case 0x81: Ad_AdIx(); val = A; Wr(final.W,A); break; | ||
4119 | case 0x85: Ad_AdZp(); val = A; WrZ(final.W,A); break; | ||
4120 | case 0x8D: Ad_AdAb(); val = A; Wr(final.W,A); break; | ||
4121 | case 0x91: Ad_AdIy(); val = A; Wr(final.W,A); break; | ||
4122 | case 0x95: Ad_AdZx(); val = A; WrZ(final.W,A); break; | ||
4123 | case 0x99: Ad_AdAy(); val = A; Wr(final.W,A); break; | ||
4124 | case 0x9D: Ad_AdAx(); val = A; Wr(final.W,A); break; | ||
4125 | |||
4126 | /* STX */ | ||
4127 | case 0x86: Ad_AdZp(); val = X; WrZ(final.W,X); break; | ||
4128 | case 0x8E: Ad_AdAb(); val = X; Wr(final.W,X); break; | ||
4129 | case 0x96: Ad_AdZy(); val = X; WrZ(final.W,X); break; | ||
4130 | |||
4131 | /* STY */ | ||
4132 | case 0x84: Ad_AdZp(); val = Y; WrZ(final.W,Y); break; | ||
4133 | case 0x8C: Ad_AdAb(); val = Y; Wr(final.W,Y); break; | ||
4134 | case 0x94: Ad_AdZx(); val = Y; WrZ(final.W,Y); break; | ||
4135 | |||
4136 | /* Undocumented Opcodes */ | ||
4137 | /* ASO */ | ||
4138 | case 0x03: if(bIgnoreIllegalOps) break; MRW_Ix(ASO); break; | ||
4139 | case 0x07: if(bIgnoreIllegalOps) break; MRW_Zp(ASO); break; | ||
4140 | case 0x0F: if(bIgnoreIllegalOps) break; MRW_Ab(ASO); break; | ||
4141 | case 0x13: if(bIgnoreIllegalOps) break; MRW_Iy(ASO); break; | ||
4142 | case 0x17: if(bIgnoreIllegalOps) break; MRW_Zx(ASO); break; | ||
4143 | case 0x1B: if(bIgnoreIllegalOps) break; MRW_Ay(ASO); break; | ||
4144 | case 0x1F: if(bIgnoreIllegalOps) break; MRW_Ax(ASO); break; | ||
4145 | |||
4146 | /* RLA */ | ||
4147 | case 0x23: if(bIgnoreIllegalOps) break; MRW_Ix(RLA); break; | ||
4148 | case 0x27: if(bIgnoreIllegalOps) break; MRW_Zp(RLA); break; | ||
4149 | case 0x2F: if(bIgnoreIllegalOps) break; MRW_Ab(RLA); break; | ||
4150 | case 0x33: if(bIgnoreIllegalOps) break; MRW_Iy(RLA); break; | ||
4151 | case 0x37: if(bIgnoreIllegalOps) break; MRW_Zx(RLA); break; | ||
4152 | case 0x3B: if(bIgnoreIllegalOps) break; MRW_Ay(RLA); break; | ||
4153 | case 0x3F: if(bIgnoreIllegalOps) break; MRW_Ax(RLA); break; | ||
4154 | |||
4155 | /* LSE */ | ||
4156 | case 0x43: if(bIgnoreIllegalOps) break; MRW_Ix(LSE); break; | ||
4157 | case 0x47: if(bIgnoreIllegalOps) break; MRW_Zp(LSE); break; | ||
4158 | case 0x4F: if(bIgnoreIllegalOps) break; MRW_Ab(LSE); break; | ||
4159 | case 0x53: if(bIgnoreIllegalOps) break; MRW_Iy(LSE); break; | ||
4160 | case 0x57: if(bIgnoreIllegalOps) break; MRW_Zx(LSE); break; | ||
4161 | case 0x5B: if(bIgnoreIllegalOps) break; MRW_Ay(LSE); break; | ||
4162 | case 0x5F: if(bIgnoreIllegalOps) break; MRW_Ax(LSE); break; | ||
4163 | |||
4164 | /* RRA */ | ||
4165 | case 0x63: if(bIgnoreIllegalOps) break; MRW_Ix(RRA); break; | ||
4166 | case 0x67: if(bIgnoreIllegalOps) break; MRW_Zp(RRA); break; | ||
4167 | case 0x6F: if(bIgnoreIllegalOps) break; MRW_Ab(RRA); break; | ||
4168 | case 0x73: if(bIgnoreIllegalOps) break; MRW_Iy(RRA); break; | ||
4169 | case 0x77: if(bIgnoreIllegalOps) break; MRW_Zx(RRA); break; | ||
4170 | case 0x7B: if(bIgnoreIllegalOps) break; MRW_Ay(RRA); break; | ||
4171 | case 0x7F: if(bIgnoreIllegalOps) break; MRW_Ax(RRA); break; | ||
4172 | |||
4173 | /* AXS */ | ||
4174 | case 0x83: if(bIgnoreIllegalOps) break; MRW_Ix(AXS); break; | ||
4175 | case 0x87: if(bIgnoreIllegalOps) break; MRW_Zp(AXS); break; | ||
4176 | case 0x8F: if(bIgnoreIllegalOps) break; MRW_Ab(AXS); break; | ||
4177 | case 0x97: if(bIgnoreIllegalOps) break; MRW_Zy(AXS); break; | ||
4178 | |||
4179 | /* LAX */ | ||
4180 | case 0xA3: if(bIgnoreIllegalOps) break; | ||
4181 | Ad_VlIx(); X = A = val; UpdateNZ(A); break; | ||
4182 | case 0xA7: if(bIgnoreIllegalOps) break; | ||
4183 | Ad_VlZp(); X = A = val; UpdateNZ(A); break; | ||
4184 | case 0xAF: if(bIgnoreIllegalOps) break; | ||
4185 | Ad_VlAb(); X = A = val; UpdateNZ(A); break; | ||
4186 | case 0xB3: if(bIgnoreIllegalOps) break; | ||
4187 | Ad_VlIy(); X = A = val; UpdateNZ(A); break; | ||
4188 | case 0xB7: if(bIgnoreIllegalOps) break; | ||
4189 | Ad_VlZy(); X = A = val; UpdateNZ(A); break; | ||
4190 | case 0xBF: if(bIgnoreIllegalOps) break; | ||
4191 | Ad_VlAy(); X = A = val; UpdateNZ(A); break; | ||
4192 | |||
4193 | /* DCM */ | ||
4194 | case 0xC3: if(bIgnoreIllegalOps) break; MRW_Ix(DCM); break; | ||
4195 | case 0xC7: if(bIgnoreIllegalOps) break; MRW_Zp(DCM); break; | ||
4196 | case 0xCF: if(bIgnoreIllegalOps) break; MRW_Ab(DCM); break; | ||
4197 | case 0xD3: if(bIgnoreIllegalOps) break; MRW_Iy(DCM); break; | ||
4198 | case 0xD7: if(bIgnoreIllegalOps) break; MRW_Zx(DCM); break; | ||
4199 | case 0xDB: if(bIgnoreIllegalOps) break; MRW_Ay(DCM); break; | ||
4200 | case 0xDF: if(bIgnoreIllegalOps) break; MRW_Ax(DCM); break; | ||
4201 | |||
4202 | /* INS */ | ||
4203 | case 0xE3: if(bIgnoreIllegalOps) break; MRW_Ix(INS); break; | ||
4204 | case 0xE7: if(bIgnoreIllegalOps) break; MRW_Zp(INS); break; | ||
4205 | case 0xEF: if(bIgnoreIllegalOps) break; MRW_Ab(INS); break; | ||
4206 | case 0xF3: if(bIgnoreIllegalOps) break; MRW_Iy(INS); break; | ||
4207 | case 0xF7: if(bIgnoreIllegalOps) break; MRW_Zx(INS); break; | ||
4208 | case 0xFB: if(bIgnoreIllegalOps) break; MRW_Ay(INS); break; | ||
4209 | case 0xFF: if(bIgnoreIllegalOps) break; MRW_Ax(INS); break; | ||
4210 | |||
4211 | /* ALR | ||
4212 | AND Accumulator with memory and LSR the result */ | ||
4213 | case 0x4B: if(bIgnoreIllegalOps) break; | ||
4214 | Ad_VlIm(); A &= val; LSR(A); break; | ||
4215 | |||
4216 | /* ARR | ||
4217 | ANDs memory with the Accumulator and RORs the result */ | ||
4218 | case 0x6B: if(bIgnoreIllegalOps) break; | ||
4219 | Ad_VlIm(); A &= val; ROR(A); break; | ||
4220 | |||
4221 | /* XAA | ||
4222 | Transfers X -> A, then ANDs A with memory */ | ||
4223 | case 0x8B: if(bIgnoreIllegalOps) break; | ||
4224 | Ad_VlIm(); A = X & val; UpdateNZ(A); break; | ||
4225 | |||
4226 | /* OAL | ||
4227 | OR the Accumulator with #EE, AND Accumulator with Memory, | ||
4228 | Transfer A -> X */ | ||
4229 | case 0xAB: if(bIgnoreIllegalOps) break; | ||
4230 | Ad_VlIm(); X = (A &= (val | 0xEE)); | ||
4231 | UpdateNZ(A); break; | ||
4232 | |||
4233 | /* SAX | ||
4234 | ANDs A and X registers (does not change A), subtracts memory | ||
4235 | from result (CMP style, not SBC style) result is stored in X */ | ||
4236 | case 0xCB: if(bIgnoreIllegalOps) break; | ||
4237 | Ad_VlIm(); tw.W = (X & A) - val; X = tw.B.l; | ||
4238 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | NZTable[X] | | ||
4239 | (tw.B.h ? C_FLAG : 0); break; | ||
4240 | /* SKB | ||
4241 | Skip Byte... or DOP - Double No-Op | ||
4242 | These bytes do nothing, but take a parameter (which can be | ||
4243 | ignored) */ | ||
4244 | case 0x04: case 0x14: case 0x34: case 0x44: case 0x54: case 0x64: | ||
4245 | case 0x80: case 0x82: case 0x89: case 0xC2: case 0xD4: case 0xE2: | ||
4246 | case 0xF4: | ||
4247 | if(bIgnoreIllegalOps) break; | ||
4248 | PC.W++; /* skip unused byte */ | ||
4249 | break; | ||
4250 | |||
4251 | /* SKW | ||
4252 | Swip Word... or TOP - Tripple No-Op | ||
4253 | These bytes are the same as SKB, only they take a 2 byte parameter. | ||
4254 | This can be ignored in some cases, but the read needs to be | ||
4255 | performed in a some cases because an extra clock cycle may be used | ||
4256 | in the process */ | ||
4257 | /* Absolute address... no need for operator */ | ||
4258 | case 0x0C: | ||
4259 | if(bIgnoreIllegalOps) break; | ||
4260 | PC.W += 2; break; | ||
4261 | /* Absolute X address... may cross page, have to perform the read */ | ||
4262 | case 0x1C: case 0x3C: case 0x5C: case 0x7C: case 0xDC: case 0xFC: | ||
4263 | if(bIgnoreIllegalOps) break; | ||
4264 | Ad_VlAx(); break; | ||
4265 | |||
4266 | /* HLT / JAM | ||
4267 | Jams up CPU operation */ | ||
4268 | case 0x02: case 0x12: case 0x22: case 0x32: case 0x42: case 0x52: | ||
4269 | case 0x62: case 0x72: case 0x92: case 0xB2: case 0xD2: case 0xF2: | ||
4270 | /*it's not -really- jammed... only the NSF code has ended*/ | ||
4271 | if(PC.W == 0x5004) bCPUJammed = 2; | ||
4272 | else | ||
4273 | { | ||
4274 | if(bIgnoreIllegalOps) break; | ||
4275 | bCPUJammed = 1; | ||
4276 | } | ||
4277 | goto jammed; | ||
4278 | |||
4279 | /* TAS */ | ||
4280 | case 0x9B: | ||
4281 | if(bIgnoreIllegalOps) break; | ||
4282 | Ad_AdAy(); | ||
4283 | SP = A & X & (Rd(PC.W - 1) + 1); | ||
4284 | Wr(final.W,SP); | ||
4285 | break; | ||
4286 | |||
4287 | /* SAY */ | ||
4288 | case 0x9C: | ||
4289 | if(bIgnoreIllegalOps) break; | ||
4290 | Ad_AdAx(); | ||
4291 | Y &= (Rd(PC.W - 1) + 1); | ||
4292 | Wr(final.W,Y); | ||
4293 | break; | ||
4294 | |||
4295 | /* XAS */ | ||
4296 | case 0x9E: | ||
4297 | if(bIgnoreIllegalOps) break; | ||
4298 | Ad_AdAy(); | ||
4299 | X &= (Rd(PC.W - 1) + 1); | ||
4300 | Wr(final.W,X); | ||
4301 | break; | ||
4302 | |||
4303 | /* AXA */ | ||
4304 | case 0x93: if(bIgnoreIllegalOps) break; MRW_Iy(AXA); break; | ||
4305 | case 0x9F: if(bIgnoreIllegalOps) break; MRW_Ay(AXA); break; | ||
4306 | |||
4307 | /* ANC */ | ||
4308 | case 0x0B: case 0x2B: | ||
4309 | if(bIgnoreIllegalOps) break; | ||
4310 | Ad_VlIm(); | ||
4311 | A &= val; | ||
4312 | ST = (ST & ~(N_FLAG|Z_FLAG|C_FLAG)) | | ||
4313 | NZTable[A] | ((A & 0x80) ? C_FLAG : 0); | ||
4314 | break; | ||
4315 | |||
4316 | /* LAS */ | ||
4317 | case 0xBB: | ||
4318 | if(bIgnoreIllegalOps) break; | ||
4319 | Ad_VlAy(); | ||
4320 | X = A = (SP &= val); | ||
4321 | UpdateNZ(A); | ||
4322 | break; | ||
4323 | } | ||
4324 | } | ||
4325 | |||
4326 | jammed: | ||
4327 | regPC = PC.W; | ||
4328 | regA = A; | ||
4329 | regX = X; | ||
4330 | regY = Y; | ||
4331 | regSP = SP; | ||
4332 | regP = ST; | ||
4333 | |||
4334 | EXIT_TIMER(cpu); | ||
4335 | |||
4336 | return (nCPUCycle - ret); | ||
4337 | } | ||
4338 | |||
4339 | /****************** rockbox interface ******************/ | ||
4340 | |||
4341 | void set_codec_track(int t, int d) { | ||
4342 | int track,fade,def=0; | ||
4343 | SetTrack(t); | ||
4344 | |||
4345 | /* for REPEAT_ONE we disable track limits */ | ||
4346 | if (ci->global_settings->repeat_mode!=REPEAT_ONE) { | ||
4347 | if (!bIsExtended || nTrackTime[t]==-1) {track=60*2*1000; def=1;} | ||
4348 | else track=nTrackTime[t]; | ||
4349 | if (!bIsExtended || nTrackFade[t]==-1) fade=5*1000; | ||
4350 | else fade=nTrackFade[t]; | ||
4351 | nSilenceTrackMS=5000; | ||
4352 | SetFadeTime(track,track+fade, fNSFPlaybackSpeed,def); | ||
4353 | } | ||
4354 | ci->id3->elapsed=d*1000; /* d is track no to display */ | ||
4355 | } | ||
4356 | |||
4357 | /* this is the codec entry point */ | ||
4358 | enum codec_status codec_main(void) | ||
4359 | { | ||
4360 | int written; | ||
4361 | uint8_t *buf; | ||
4362 | size_t n; | ||
4363 | int endofstream; /* end of stream flag */ | ||
4364 | int track; | ||
4365 | int dontresettrack; | ||
4366 | char last_path[MAX_PATH]; | ||
4367 | int usingplaylist; | ||
4368 | |||
4369 | /* we only render 16 bits */ | ||
4370 | ci->configure(DSP_SET_SAMPLE_DEPTH, (long *)16); | ||
4371 | |||
4372 | ci->configure(DSP_SET_FREQUENCY, (long*)44100); | ||
4373 | ci->configure(DSP_SET_STEREO_MODE, (long *)STEREO_MONO); | ||
4374 | |||
4375 | RebuildOutputTables(); | ||
4376 | |||
4377 | dontresettrack=0; | ||
4378 | last_path[0]='\0'; | ||
4379 | track=0; | ||
4380 | |||
4381 | next_track: | ||
4382 | usingplaylist=0; | ||
4383 | DEBUGF("NSF: next_track\n"); | ||
4384 | if (codec_init()) { | ||
4385 | return CODEC_ERROR; | ||
4386 | } | ||
4387 | DEBUGF("NSF: after init\n"); | ||
4388 | |||
4389 | |||
4390 | /* wait for track info to load */ | ||
4391 | while (!*ci->taginfo_ready && !ci->stop_codec) | ||
4392 | ci->sleep(1); | ||
4393 | |||
4394 | /* Read the entire file */ | ||
4395 | DEBUGF("NSF: request file\n"); | ||
4396 | ci->seek_buffer(0); | ||
4397 | buf = ci->request_buffer(&n, ci->filesize); | ||
4398 | if (!buf || n < (size_t)ci->filesize) { | ||
4399 | DEBUGF("NSF: file load failed\n"); | ||
4400 | return CODEC_ERROR; | ||
4401 | } | ||
4402 | |||
4403 | init_nsf: | ||
4404 | if(!NSFCore_Initialize()) { | ||
4405 | DEBUGF("NSF: NSFCore_Initialize failed\n"); return CODEC_ERROR;} | ||
4406 | |||
4407 | if(LoadFile(buf,ci->filesize)) { | ||
4408 | DEBUGF("NSF: LoadFile failed\n"); return CODEC_ERROR;} | ||
4409 | if(!SetPlaybackOptions(44100)) { | ||
4410 | DEBUGF("NSF: SetPlaybackOptions failed\n"); return CODEC_ERROR;} | ||
4411 | if(!LoadNSF(nDataBufferSize)) { | ||
4412 | DEBUGF("NSF: LoadNSF failed\n"); return CODEC_ERROR;} | ||
4413 | |||
4414 | ci->id3->title=szGameTitle; | ||
4415 | ci->id3->artist=szArtist; | ||
4416 | ci->id3->album=szCopyright; | ||
4417 | if (usingplaylist) { | ||
4418 | ci->id3->length=nPlaylistSize*1000; | ||
4419 | } else { | ||
4420 | ci->id3->length=nTrackCount*1000; | ||
4421 | } | ||
4422 | |||
4423 | if (!dontresettrack||strcmp(ci->id3->path,last_path)) { | ||
4424 | /* if this is the first time we're seeing this file, or if we haven't | ||
4425 | been asked to preserve the track number, default to the proper | ||
4426 | initial track */ | ||
4427 | if (bIsExtended && | ||
4428 | ci->global_settings->repeat_mode!=REPEAT_ONE && nPlaylistSize>0) { | ||
4429 | /* decide to use the playlist */ | ||
4430 | usingplaylist=1; | ||
4431 | track=0; | ||
4432 | set_codec_track(nPlaylist[0],0); | ||
4433 | } else { | ||
4434 | /* simply use the initial track */ | ||
4435 | track=nInitialTrack; | ||
4436 | set_codec_track(track,track); | ||
4437 | } | ||
4438 | } else { | ||
4439 | /* if we've already been running this file assume track is set | ||
4440 | already */ | ||
4441 | if (usingplaylist) set_codec_track(nPlaylist[track],track); | ||
4442 | else set_codec_track(track,track); | ||
4443 | } | ||
4444 | strcpy(last_path,ci->id3->path); | ||
4445 | |||
4446 | /* The main decoder loop */ | ||
4447 | |||
4448 | endofstream = 0; | ||
4449 | |||
4450 | reset_profile_timers(); | ||
4451 | |||
4452 | while (!endofstream) { | ||
4453 | |||
4454 | ci->yield(); | ||
4455 | if (ci->stop_codec || ci->new_track) { | ||
4456 | break; | ||
4457 | } | ||
4458 | |||
4459 | if (ci->seek_time >0) { | ||
4460 | track=ci->seek_time/1000; | ||
4461 | if (usingplaylist) { | ||
4462 | if (track>=nPlaylistSize) break; | ||
4463 | } else { | ||
4464 | if (track>=nTrackCount) break; | ||
4465 | } | ||
4466 | ci->seek_complete(); | ||
4467 | dontresettrack=1; | ||
4468 | goto init_nsf; | ||
4469 | } | ||
4470 | |||
4471 | ENTER_TIMER(total); | ||
4472 | written=GetSamples((uint8_t*)samples,WAV_CHUNK_SIZE/2); | ||
4473 | EXIT_TIMER(total); | ||
4474 | |||
4475 | if (!written || SongCompleted()) { | ||
4476 | print_timers(last_path,track); | ||
4477 | reset_profile_timers(); | ||
4478 | |||
4479 | track++; | ||
4480 | if (usingplaylist) { | ||
4481 | if (track>=nPlaylistSize) break; | ||
4482 | } else { | ||
4483 | if (track>=nTrackCount) break; | ||
4484 | } | ||
4485 | dontresettrack=1; | ||
4486 | goto init_nsf; | ||
4487 | } | ||
4488 | |||
4489 | while (!ci->pcmbuf_insert((char *)samples, written)) | ||
4490 | ci->yield(); | ||
4491 | |||
4492 | } | ||
4493 | |||
4494 | print_timers(last_path,track); | ||
4495 | |||
4496 | if (ci->request_next_track()) { | ||
4497 | if (ci->global_settings->repeat_mode==REPEAT_ONE) { | ||
4498 | /* in repeat one mode just advance to the next track */ | ||
4499 | track++; | ||
4500 | if (track>=nTrackCount) track=0; | ||
4501 | dontresettrack=1; | ||
4502 | /* at this point we can't tell if another file has been selected */ | ||
4503 | goto next_track; | ||
4504 | } else { | ||
4505 | /* otherwise do a proper load of the next file */ | ||
4506 | dontresettrack=0; | ||
4507 | last_path[0]='\0'; | ||
4508 | } | ||
4509 | goto next_track; /* when we fall through here we'll reload the file */ | ||
4510 | } | ||
4511 | |||
4512 | return CODEC_OK; | ||
4513 | } | ||
diff --git a/apps/metadata.c b/apps/metadata.c index acd8de38e3..d02e81a014 100644 --- a/apps/metadata.c +++ b/apps/metadata.c | |||
@@ -2012,6 +2012,17 @@ bool get_metadata(struct track_info* track, int fd, const char* trackname, | |||
2012 | } | 2012 | } |
2013 | 2013 | ||
2014 | break; | 2014 | break; |
2015 | case AFMT_NSF: | ||
2016 | buf = track->id3.path; | ||
2017 | if ((lseek(fd, 0, SEEK_SET) < 0) || ((read(fd, buf, 8)) < 8)) | ||
2018 | { | ||
2019 | DEBUGF("lseek or read failed\n"); | ||
2020 | return false; | ||
2021 | } | ||
2022 | track->id3.vbr = false; | ||
2023 | track->id3.filesize = filesize(fd); | ||
2024 | if (memcmp(buf,"NESM",4) && memcmp(buf,"NSFE",4)) return false; | ||
2025 | break; | ||
2015 | 2026 | ||
2016 | case AFMT_AIFF: | 2027 | case AFMT_AIFF: |
2017 | if (!get_aiff_metadata(fd, &(track->id3))) | 2028 | if (!get_aiff_metadata(fd, &(track->id3))) |
diff --git a/apps/tree.c b/apps/tree.c index edd238a3b0..7869696514 100644 --- a/apps/tree.c +++ b/apps/tree.c | |||
@@ -108,6 +108,8 @@ const struct filetype filetypes[] = { | |||
108 | { "aiff",TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, | 108 | { "aiff",TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, |
109 | { "sid", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, | 109 | { "sid", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, |
110 | { "adx", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, | 110 | { "adx", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, |
111 | { "nsf", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, | ||
112 | { "nsfe", TREE_ATTR_MPA, Icon_Audio, VOICE_EXT_MPA }, | ||
111 | #endif | 113 | #endif |
112 | { "m3u", TREE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST }, | 114 | { "m3u", TREE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST }, |
113 | { "m3u8", TREE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST }, | 115 | { "m3u8", TREE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST }, |