ADDW (SPC700): Difference between revisions

Latest revision as of 11:53, 28 November 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
Direct Page	7A	2 bytes	5 cycles


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

ADDW (Add Word) is an SPC700 command that adds a 16-bit direct page value to YA.

Official Super Nintendo development manual on ADDW: Table C-12 in Appendix C-8 of Book I

@@ Line 7: / Line 7: @@
 |'''Speed'''
 |+
-|
+|[[Direct Page Addressing | Direct Page]]
 |7A
 |2 bytes
@@ Line 14: / Line 14: @@
 {| class="wikitable" style="float:right;clear:right;width:30%"
-!colspan="8"|Flags Clobbered
+!colspan="8"|Flags Affected
 |+
-|N
+|[[Negative Flag|N]]
-|V
+|[[Overflow Flag|V]]
-|P
+|[[Direct Page Flag|P]]
-|B
+|[[Break Flag|B]]
-|H
+|[[Half-Carry Flag|H]]
-|I
+|[[Interrupt Enable Flag|I]]
-|Z
+|[[Zero Flag|Z]]
-|C
+|[[Carry Flag|C]]
 |+
 |
@@ Line 35: / Line 35: @@
 |}
-'''ADDW''' (Add Word) is an [[SPC700]] command that stores a sum in [[YA]].
+'''ADDW''' (Add Word) is an [[SPC700]] command that adds a 16-bit [[direct page]] value to [[YA]].
 === See Also ===
 * [[SUBW]]
 * [[CMPW]]
+* [[MOVW]]
+* [[ADC (SPC700)]]
 === External Links ===
-* Official Super Nintendo development manual on ADDW: [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I]
+* Official Super Nintendo development manual on ADDW: Table C-12 in [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I]
 [[Category:ASM]]
 [[Category:SPC700]]
 [[Category:16-bit Operation Commands]]
+[[Category:Two-byte Instructions]]