INCW (SPC700): Difference between revisions

Latest revision as of 12:29, 30 July 2024


Basic Info
Addressing Mode	Opcode	Length	Speed
Direct Page	3A	2 bytes	6 cycles


Flags Affected
N	V	P	B	H	I	Z	C
N	.	.	.	.	.	Z	.

INCW is an SPC700 command that increments a 16-bit word of the direct page.

INCW dp

@@ Line 7: / Line 7: @@
 |'''Speed'''
 |+
-|direct page
+|[[Direct Page Addressing | Direct Page]]
 |3A
 |2 bytes
@@ Line 14: / Line 14: @@
 {| class="wikitable" style="float:right;clear:right;width:30%"
-!colspan="8"|Flags Clobbered
+!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]]
 |+
 |N
-|V
-|P
-|B
-|H
-|I
-|Z
-|C
-|+
-|
 |.
 |.
@@ Line 31: / Line 31: @@
 |.
 |.
-|
+|Z
 |.
 |}
 '''INCW''' is an [[SPC700]] command that increments a 16-bit word of the [[direct page]].
+==== Syntax ====
+<pre>
+INCW dp
+</pre>
 === See Also ===
 * [[DECW]]
 * [[MOVW]]
+* [[INC (SPC700)]]
+* [[INC]]
+* [[Memory Pair]]
 === External Links ===
-* Official Super Nintendo development manual on INCW: [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I]
+* Official Super Nintendo development manual on INCW: Table C-12 in [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I]
+* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L452
 [[Category:ASM]]
 [[Category:SPC700]]
 [[Category:16-bit Operation Commands]]
+[[Category:Two-byte Instructions]]