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| author | Linus Nielsen Feltzing <linus@haxx.se> | 2005-03-01 14:32:17 +0000 |
|---|---|---|
| committer | Linus Nielsen Feltzing <linus@haxx.se> | 2005-03-01 14:32:17 +0000 |
| commit | e734017e2f0f4b0d70242c9621359fa79b74318d (patch) | |
| tree | 988a144b18d56fb0bd573d2d707eebe727ec09c0 | |
| parent | 8444632da4710c72a6fbb5f6e002a76f97d537f1 (diff) | |
| download | rockbox-e734017e2f0f4b0d70242c9621359fa79b74318d.tar.gz rockbox-e734017e2f0f4b0d70242c9621359fa79b74318d.zip | |
iRiver: more relaxed LCD timing
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6091 a1c6a512-1295-4272-9138-f99709370657
| -rwxr-xr-x | firmware/drivers/lcd.S | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/firmware/drivers/lcd.S b/firmware/drivers/lcd.S index 585b9d1e67..ee3eedb7b9 100755 --- a/firmware/drivers/lcd.S +++ b/firmware/drivers/lcd.S | |||
| @@ -362,9 +362,13 @@ lcd_write_data: | |||
| 362 | 362 | ||
| 363 | lea 0xf0000000,%a1 | 363 | lea 0xf0000000,%a1 |
| 364 | .loop: | 364 | .loop: |
| 365 | move.b (%a0)+,%d1 | 365 | /* When running in IRAM, this loop takes 7 cycles plus the LCD write. |
| 366 | move.w %d1,(%a1) | 366 | The 7 cycles are necessary to follow the LCD timing specs |
| 367 | subq.l #1,%d0 | 367 | at 140MHz */ |
| 368 | bne .loop | 368 | move.b (%a0)+,%d1 /* 3(1/0) */ |
| 369 | move.w %d1,(%a1) /* 1(0/1) */ | ||
| 370 | subq.l #1,%d0 /* 1(0/0) */ | ||
| 371 | nop /* 1(0/0) */ | ||
| 372 | bne .loop /* 2(0/0) */ | ||
| 369 | rts | 373 | rts |
| 370 | #endif | 374 | #endif |