SET1 (SPC700): Difference between revisions

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

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

@@ Line 1: / Line 1: @@
-SET1 is an [[SPC700]] command that sets the direct page flag.
+{| class="wikitable" style="float:right;clear:right;width:40%"
+!colspan="8"|Basic Info
+|+
+|'''Addressing Mode'''
+|'''Opcode'''
+|'''Length'''
+|'''Speed'''
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|02
+|2 bytes
+|4 cycles
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|22
+|2 bytes
+|4 cycles
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|42
+|2 bytes
+|4 cycles
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|62
+|2 bytes
+|4 cycles
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|82
+|2 bytes
+|4 cycles
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|A2
+|2 bytes
+|4 cycles
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|C2
+|2 bytes
+|4 cycles
+|+
+|[[Direct Page Bit Addressing | Direct Page Bit]]
+|E2
+|2 bytes
+|4 cycles
+|}
+{| class="wikitable" style="float:right;clear:right;width:30%"
+!colspan="8"|Flags Affected
+|+
+|[[Negative Flag|N]]
+|[[Overflow Flag|V]]
+|[[Direct Page Flag|P]]
+|[[Break Flag|B]]
+|[[Half-Carry Flag|H]]
+|[[Interrupt Enable Flag|I]]
+|[[Zero Flag|Z]]
+|[[Carry Flag|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 ====
+<pre>
+SET1 dip. bit
+</pre>
+=== See Also ===
+* [[CLR1]]
+* [[TSET1]]
+* [[SMB]]
+* [[dip bit]]
+=== 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]
+* 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
+* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L572
 [[Category:ASM]]
 [[Category:SPC700]]
 [[Category:Bit Operation Commands]]
+[[Category:Read-Modify-Write Instructions]]
+[[Category:Two-byte Instructions]]