We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
CMP (SPC700): Difference between revisions
From SnesLab
(abs admodes) |
(added several admodes) |
||
| Line 7: | Line 7: | ||
|'''Speed''' | |'''Speed''' | ||
|+ | |+ | ||
| | |[[Immediate Addressing | Immediate]] | ||
|68 | |68 | ||
|2 bytes | |2 bytes | ||
| Line 22: | Line 22: | ||
|3 cycles | |3 cycles | ||
|+ | |+ | ||
| | |[[Direct Page Indexed by X]] | ||
|74 | |74 | ||
|2 bytes | |2 bytes | ||
| Line 67: | Line 67: | ||
|5 cycles | |5 cycles | ||
|+ | |+ | ||
| | |[[Immediate Addressing | Immediate]] | ||
|C8 | |C8 | ||
|2 bytes | |2 bytes | ||
|2 cycles | |2 cycles | ||
|+ | |+ | ||
| | |[[Direct Page Addressing | Direct Page]] | ||
|3E | |3E | ||
|2 bytes | |2 bytes | ||
|3 cycles | |3 cycles | ||
|+ | |+ | ||
| | |[[Absolute Addressing | Absolute]] | ||
|1E | |1E | ||
|3 bytes | |3 bytes | ||
|4 cycles | |4 cycles | ||
|+ | |+ | ||
| | |[[Immediate Addressing | Immediate]] | ||
|AD | |AD | ||
|2 bytes | |2 bytes | ||
|2 cycles | |2 cycles | ||
|+ | |+ | ||
| | |[[Direct Page Addressing | Direct Page]] | ||
|7E | |7E | ||
|2 bytes | |2 bytes | ||
|3 cycles | |3 cycles | ||
|+ | |+ | ||
| | |[[Absolute Addressing | Absolute]] | ||
|5E | |5E | ||
|3 bytes | |3 bytes | ||
Revision as of 03:49, 24 July 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Immediate | 68 | 2 bytes | 2 cycles | ||||
| 66 | 1 bytes | 3 cycles | |||||
| 64 | 2 bytes | 3 cycles | |||||
| Direct Page Indexed by X | 74 | 2 bytes | 4 cycles | ||||
| Absolute | 65 | 3 bytes | 4 cycles | ||||
| Absolute Indexed by X | 75 | 3 bytes | 5 cycles | ||||
| Absolute Indexed by Y | 76 | 3 bytes | 5 cycles | ||||
| 67 | 2 byte | 6 cycles | |||||
| 77 | 2 bytes | 6 cycles | |||||
| 79 | 1 bytes | 5 cycles | |||||
| 69 | 3 bytes | 6 cycles | |||||
| 78 | 3 bytes | 5 cycles | |||||
| Immediate | C8 | 2 bytes | 2 cycles | ||||
| Direct Page | 3E | 2 bytes | 3 cycles | ||||
| Absolute | 1E | 3 bytes | 4 cycles | ||||
| Immediate | AD | 2 bytes | 2 cycles | ||||
| Direct Page | 7E | 2 bytes | 3 cycles | ||||
| Absolute | 5E | 3 bytes | 4 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | |||
CMP is an SPC700 instruction that compares two operands. The right operand is subtracted from the left operand, but the difference is not stored anywhere - the side effect is the N, Z, and C flags being modified.
See Also
External Links
- Official Super Nintendo development manual on CMP: Appendix C-5 of Book I