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Fixed Carry handling in SBC opcode.

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Oliver Schmidt 2013-05-21 23:47:19 +02:00
parent 3cc3b39c89
commit 129fcff7e5
1 changed files with 1 additions and 1 deletions
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src/sim65/6502.c
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@ -312,7 +312,7 @@ static unsigned HaveIRQRequest;
SET_CF (res <= 0xFF); \ SET_CF (res <= 0xFF); \
SET_OF (((old^rhs) & (old^res) & 0x80)); \ SET_OF (((old^rhs) & (old^res) & 0x80)); \
} else { \ } else { \
Regs.AC -= rhs - (!GET_CF ()); \ Regs.AC -= rhs + (!GET_CF ()); \
TEST_ZF (Regs.AC); \ TEST_ZF (Regs.AC); \
TEST_SF (Regs.AC); \ TEST_SF (Regs.AC); \
SET_CF (Regs.AC <= 0xFF); \ SET_CF (Regs.AC <= 0xFF); \