6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2025-01-11 11:30:13 +00:00
Code Issues Projects Releases Wiki Activity

Fixed Carry handling in SBC opcode.

Browse Source
This commit is contained in:
Oliver Schmidt 2013-05-21 23:47:19 +02:00
parent 3cc3b39c89
commit 129fcff7e5
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/sim65/6502.c
View File

@ -312,7 +312,7 @@ static unsigned HaveIRQRequest;
SET_CF (res <= 0xFF); \
SET_OF (((old^rhs) & (old^res) & 0x80)); \
} else { \
Regs.AC -= rhs - (!GET_CF ()); \
Regs.AC -= rhs + (!GET_CF ()); \
TEST_ZF (Regs.AC); \
TEST_SF (Regs.AC); \
SET_CF (Regs.AC <= 0xFF); \