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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