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SET1 (SPC700): Difference between revisions

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(Bit 4 of opcode)
(→‎External Links: added anomie link)
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* https://archive.org/details/SNESDevManual/book1/page/n226
* https://archive.org/details/SNESDevManual/book1/page/n226
* 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]]

Revision as of 21:43, 13 July 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