3 files changed, 6 insertions, 6 deletions

diff --git a/apps/plugins/zxbox/sp_def.h b/apps/plugins/zxbox/sp_def.h
index 1030be120c..931804ff9c 100644
--- a/apps/plugins/zxbox/sp_def.h
+++ b/apps/plugins/zxbox/sp_def.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (C) 1996-1998 Szeredi Miklos
  * Email: mszeredi@inf.bme.hu
  *
@@ -20,7 +20,7 @@
 
 #include "spperif.h"
 
-#define MARK_SCR(addr) SPNM(scr_mark)[(addr) >> 5] |= 1 << ((addr) & 0x1F)
+#define MARK_SCR(addr) SPNM(scr_mark)[(addr) >> 5] |= BIT_N((addr) & 0x1F)
 
 #define PUTMEM(addr, ptr, val)  \
 {                                                \
diff --git a/apps/plugins/zxbox/spkey.c b/apps/plugins/zxbox/spkey.c
index a21aed6af2..77427e8015 100644
--- a/apps/plugins/zxbox/spkey.c
+++ b/apps/plugins/zxbox/spkey.c
@@ -85,7 +85,7 @@ int spkb_state_changed;
 
 #define SKE {0, 0, 0, 0, 0, 0, 0, 0}
 
-#define SKP(x) (1 << x)
+#define SKP(x) BIT_N(x)
 
 #define SKN0(x) {SKP(x), 0, 0, 0, 0, 0, 0, 0} 
 #define SKN1(x) {0, SKP(x), 0, 0, 0, 0, 0, 0} 
@@ -617,7 +617,7 @@ static void copy_basekeys(struct spbasekey *addk)
 static unsigned transform_shift(int modif)
 {
   if(!modif) return 0;
-  else return (1 << (modif - 1));
+  else return BIT_N(modif - 1);
 }
 
 
diff --git a/apps/plugins/zxbox/spscr.c b/apps/plugins/zxbox/spscr.c
index 2c24fb37a8..d419ff0c66 100644
--- a/apps/plugins/zxbox/spscr.c
+++ b/apps/plugins/zxbox/spscr.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (C) 1996-1998 Szeredi Miklos
  * Email: mszeredi@inf.bme.hu
  *
@@ -82,7 +82,7 @@ byte *update_screen_line(byte *scrp, int coli, int scri, int border,
       SPNM(imag_mark)[coli] |= mark;
       SPNM(imag_horiz) |= mark;
       coli >>= 3;
-      SPNM(imag_vert) |= (1 << coli);
+      SPNM(imag_vert) |= BIT_N(coli);
       
       spmp = PRNM(proc).mem + (scri << 5);
       spcp = PRNM(proc).mem + 0x5800 + (coli << 5);