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DEC (SPC700): Difference between revisions
From SnesLab
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=== External Links === | === External Links === | ||
* Official Nintendo | * Official Super Nintendo development manual on DEC: [https://archive.org/details/SNESDevManual/book1/page/n232 Appendix C-7 of Book I] | ||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:SPC700]] | [[Category:SPC700]] | ||
[[Category:Addition and Subtraction Commands]] | [[Category:Addition and Subtraction Commands]] | ||
Revision as of 02:17, 8 July 2023
DEC is an SPC700 instruction that decrements a value.
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| 9C | 1 byte | 2 cycles | |||||
| 8B | 2 byte | 4 cycles | |||||
| 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 |
| . | . | . | . | . | . | ||
See Also
External Links
- Official Super Nintendo development manual on DEC: Appendix C-7 of Book I