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ROR (SPC700): Difference between revisions
From SnesLab
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(→See Also: ror Super FX) |
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{| class="wikitable" style="float:right;clear:right;width:30%" | {| class="wikitable" style="float:right;clear:right;width:30%" | ||
!colspan="8"|Flags | !colspan="8"|Flags Affected | ||
|+ | |+ | ||
|[[Negative Flag|N]] | |[[Negative Flag|N]] | ||
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* [[ROL (SPC700)]] | * [[ROL (SPC700)]] | ||
* [[ROR]] | * [[ROR]] | ||
* [[ROR (Super FX)]] | |||
=== External Links === | === External Links === | ||
Latest revision as of 19:42, 8 January 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Accumulator | 7C | 1 byte | 2 cycles | ||||
| Direct Page | 6B | 2 bytes | 4 cycles | ||||
| Direct Page Indexed by X | 7B | 2 bytes | 5 cycles | ||||
| Absolute | 6C | 3 bytes | 5 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | |||
ROR is an SPC700 instruction that rotates its operand one bit to the right. The old value of the carry flag is rotated into the most significant bit. The least significant bit is rotated into the carry flag.
The official manual has the bit shift operators for ROR pointing the wrong way.
See Also
External Links
- Official Super Nintendo development manual on ROR: Appendix C-7 of Book I