ADC
Add Memory to Accumulator With Carry
Operation: A + M + C -> A, C
N V - B D I Z C / / . . . . / /
| Addressing Mode | Assembly Language Form | OP CODE | No. Bytes | No. Cycles |
|---|---|---|---|---|
| Immediate | ADC #$FF | $69 | 2 | 2 |
| ZeroPage | ADC $FF | $65 | 2 | 3 |
| ZeroPage,X | ADC $FF,X | $75 | 2 | 4 |
| Absolute | ADC $FFFF | $6D | 3 | 4 |
| Absolute,X | ADC $FFFF,X | $7D | 3 | 4* |
| Absolute,Y | ADC $FFFF,Y | $79 | 3 | 4* |
| (Indirect,X) | ADC ($FF,X) | $61 | 2 | 6 |
| (Indirect),Y | ADC ($FF),Y | $71 | 2 | 5* |
* Add 1 if page boundary is crossed.
For penalty cycles on the 65816, check the desired addressing mode.
Note: See CPU-Bugs for a description how flags are affected.