ROR
Rotate One Bit Right (Memory or Accumulator)
Operation: +-> |C| -> |7|6|5|4|3|2|1|0| >-+ |C|
N V - B D I Z C / . . . . . / /
| Addressing Mode | Assembly Language Form | OP CODE | No. Bytes | No. Cycles |
|---|---|---|---|---|
| Accumulator | ROR A | $6A | 1 | 2 |
| ZeroPage | ROR $FF | $66 | 2 | 5 |
| ZeroPage,X | ROR $FF,X | $76 | 2 | 6 |
| Absolute | ROR $FFFF | $6E | 3 | 6 |
| Absolute,X | ROR $FFFF,X | $7E | 3 | 7 |
For penalty cycles on the 65816, check the desired addressing mode.
Note: ROR instruction is available on MCS650X microprocessors after June, 1976.