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| author | Andreas Baumann <mail@andreasbaumann.cc> | 2020-12-25 21:00:58 +0100 |
|---|---|---|
| committer | Andreas Baumann <mail@andreasbaumann.cc> | 2020-12-25 21:00:58 +0100 |
| commit | c0e01bce21b06bf9e62d9f2bf436ad93914512e8 (patch) | |
| tree | b965bdc30952ce318d5c5e6ea703117baad6f49b /emu/6502.c | |
| parent | cc9c81e4fef6938ec0b8a29c040b174b6c29daa8 (diff) | |
| download | 6502-c0e01bce21b06bf9e62d9f2bf436ad93914512e8.tar.gz 6502-c0e01bce21b06bf9e62d9f2bf436ad93914512e8.tar.bz2 | |
more testing
Diffstat (limited to 'emu/6502.c')
| -rw-r--r-- | emu/6502.c | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -372,7 +372,7 @@ void cpu_6502_step( cpu_6502_t *cpu ) case SBC_IMM: operand8 = cpu_6502_read_byte( cpu, cpu->PC ); cpu->PC++; - tmp = cpu->A - operand8 - ( cpu_6502_is_carry( cpu ) ? 0 : 1 ); + tmp = cpu->A - operand8 - ( cpu_6502_is_carry( cpu ) ? 1 : 0 ); update_negative_and_sign( cpu, tmp ); if( tmp & 0xFF00 ) { cpu->PS |= PS_C; |