SET1 (SPC700): Difference between revisions

Revision as of 07:44, 18 December 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
Direct Page	02	2 bytes	4 cycles
Direct Page	22	2 bytes	4 cycles
Direct Page	42	2 bytes	4 cycles
Direct Page	62	2 bytes	4 cycles
Direct Page	82	2 bytes	4 cycles
Direct Page	A2	2 bytes	4 cycles
Direct Page	C2	2 bytes	4 cycles
Direct Page	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.

External Links

Official Nintendo documentation on SET1: Table C-18 in Appendix C-9 of Book I
section 8.2.3.1 of page 3-8-8, lbid.
http://www.ffviman.fr/switch-snes/sf-sound.html

@@ Line 70: / Line 70: @@
 |}
-'''SET1''' is an [[SPC700]] command that sets a bit in a [[direct page]] byte.  The byte following the opcode determines which byte.  The high nibble 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.
 === See Also ===