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ROR: Difference between revisions
From SnesLab
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[[Category:Read-Modify-Write Instructions]] | |||
Revision as of 21:02, 2 May 2023
ROR (Rotate Right) is a 65x instruction that rotates a value and the carry flag right one bit. The least significant bit is shifted into the carry flag. The carry flag is shifted into the most significant bit.
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| accumulator | 6A | 1 byte | 2 cycles | ||||
| absolute | 6E | 3 bytes | 6 cycles | ||||
| direct page | 66 | 2 bytes | 5 cycles | ||||
| absolute indexed by X | 7E | 3 bytes | 7 cycles | ||||
| direct page indexed by X | 76 | 2 bytes | 6 cycles | ||||
| Flags Clobbered | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | ||||