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SET1 (SPC700): Difference between revisions
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'''SET1''' is an [[SPC700]] command that sets a bit in a [[direct page]] byte. The byte following the opcode determines which byte. The most significant 3 bits of the opcode determines which bit within that byte. | '''SET1''' is an [[SPC700]] command that sets a bit in a [[direct page]] byte. The byte following the opcode determines which byte. The most significant 3 bits of the opcode determines which bit within that byte. In Nintendo's manual, the high nybble of the opcode is called x and bit 4 of the opcode is always zero. | ||
No flags are affected. | No flags are affected. | ||
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* [[TSET1]] | * [[TSET1]] | ||
* [[SMB]] | * [[SMB]] | ||
* [[dip bit]] | |||
=== External Links === | === External Links === | ||
* Official Nintendo documentation on SET1: Table C-18 in [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I] | * Official Nintendo documentation on SET1: Table C-18 in [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I] | ||
* subparagraph 8.2.3.1 of [https://archive.org/details/SNESDevManual/book1/page/n186 page 3-8-8], lbid. | * subparagraph 8.2.3.1 of [https://archive.org/details/SNESDevManual/book1/page/n186 page 3-8-8], lbid. | ||
* [https://archive.org/details/SNESDevManual/book1/page/n226 Appendix C-1] | |||
* http://www.ffviman.fr/switch-snes/sf-sound.html | * http://www.ffviman.fr/switch-snes/sf-sound.html | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L572 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
Latest revision as of 04:25, 8 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Direct Page Bit | 02 | 2 bytes | 4 cycles | ||||
| Direct Page Bit | 22 | 2 bytes | 4 cycles | ||||
| Direct Page Bit | 42 | 2 bytes | 4 cycles | ||||
| Direct Page Bit | 62 | 2 bytes | 4 cycles | ||||
| Direct Page Bit | 82 | 2 bytes | 4 cycles | ||||
| Direct Page Bit | A2 | 2 bytes | 4 cycles | ||||
| Direct Page Bit | C2 | 2 bytes | 4 cycles | ||||
| Direct Page Bit | E2 | 2 bytes | 4 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | . |
SET1 is an SPC700 command that sets a bit in a direct page byte. The byte following the opcode determines which byte. The most significant 3 bits of the opcode determines which bit within that byte. In Nintendo's manual, the high nybble of the opcode is called x and bit 4 of the opcode is always zero.
No flags are affected.
Syntax
SET1 dip. bit
See Also
External Links
- Official Nintendo documentation on SET1: Table C-18 in Appendix C-9 of Book I
- subparagraph 8.2.3.1 of page 3-8-8, lbid.
- Appendix C-1
- http://www.ffviman.fr/switch-snes/sf-sound.html
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L572