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fix carry and shifts in hardware, misc

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Redo
2024-01-20 03:12:26 -06:00
parent ecf01a2dc9
commit 365071072b
8 changed files with 29 additions and 29 deletions
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6
emulator/8608emulator.c
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@@ -40,9 +40,9 @@
#define pushretaddr2 writememory(cpu->s++, lobyte((cpu->i-1)%65536));
#define lni cpu->instr = readmemory(cpu->i++); cpu->cycle = 0;
#define ldi cpu->instr = readmemory(cpu->i); cpu->cycle = 0;
#define addf(x,y) { x=(x+y); cpu->cf=x>=256; x&=0xFF; setzf(x); }
#define subf(x,y) addf(x,-y);
#define cmpf(x,y) { int t=x-y; cpu->cf=(t<0); setzf(t); }
#define addf(x,y) { x=(x+y)&0x1FF; cpu->cf=x>=256; x&=0xFF; setzf(x); }
#define subf(x,y) addf(x,(-y)&0xFF);
#define cmpf(x,y) { int t=x+((-y)&0xFF); cpu->cf=t>=256; t&=0xFF; setzf(t); }
#define rol(x,y) x=(x<<y)|(x>>(8-y));
#define ror(x,y) x=(x>>y)|(x<<(8-y));
#define sra(x,y) x=(x>>y);