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DEC (SPC700): Difference between revisions
From SnesLab
(accumulator) |
(dp admodes) |
||
| Line 12: | Line 12: | ||
|2 cycles | |2 cycles | ||
|+ | |+ | ||
| | |[[Direct Page Addressing | Direct Page]] | ||
|8B | |8B | ||
|2 byte | |2 byte | ||
|4 cycles | |4 cycles | ||
|+ | |+ | ||
| | |[[Direct Page Indexed by X]] | ||
|9B | |9B | ||
|2 byte | |2 byte | ||
Revision as of 18:47, 23 July 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Accumulator | 9C | 1 byte | 2 cycles | ||||
| Direct Page | 8B | 2 byte | 4 cycles | ||||
| Direct Page Indexed by X | 9B | 2 byte | 5 cycles | ||||
| 8C | 3 bytes | 5 cycles | |||||
| 1D | 1 byte | 2 cycles | |||||
| DC | 1 byte | 2 cycles | |||||
| Flags Clobbered | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | ||
DEC is an SPC700 instruction that decrements its operand.
See Also
External Links
- Official Super Nintendo development manual on DEC: Appendix C-7 of Book I