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Fixed carry generation in CMP, CPX and CPY

This commit is contained in:
Andrew Jacobs 2019-03-22 13:25:48 +00:00
parent 340d19d8e9
commit aba1cc1521
1 changed files with 6 additions and 6 deletions
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12
emu816.h
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@ -769,7 +769,7 @@ private:
if (e || p.f_m) {
Byte data = getByte(ea);
Word temp = data - a.b;
Word temp = data - a.b - 1;
setc(temp & 0x100);
setnz_b(lo(temp));
@ -777,7 +777,7 @@ private:
}
else {
Word data = getWord(ea);
Addr temp = data - a.w;
Addr temp = data - a.w - 1;
setc(temp & 0x10000L);
setnz_w((Word)temp);
@ -820,7 +820,7 @@ private:
if (e || p.f_x) {
Byte data = getByte(ea);
Word temp = data - x.b;
Word temp = data - x.b - 1;
setc(temp & 0x100);
setnz_b(lo(temp));
@ -828,7 +828,7 @@ private:
}
else {
Word data = getWord(ea);
Addr temp = data - x.w;
Addr temp = data - x.w - 1;
setc(temp & 0x10000);
setnz_w((Word) temp);
@ -842,7 +842,7 @@ private:
if (e || p.f_x) {
Byte data = getByte(ea);
Word temp = data - y.b;
Word temp = data - y.b - 1;
setc(temp & 0x100);
setnz_b(lo(temp));
@ -850,7 +850,7 @@ private:
}
else {
Word data = getWord(ea);
Addr temp = data - y.w;
Addr temp = data - y.w - 1;
setc(temp & 0x10000);
setnz_w((Word) temp);