ADDW (SPC700): Difference between revisions

Latest revision as of 13:50, 30 July 2024


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


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

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

ADDW YA, dp

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 |[[Carry Flag|C]]
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+|N
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+|V
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 |.
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 |}
-'''ADDW''' (Add Word) is an [[SPC700]] command that adds a 16-bit [[direct page]] value to [[YA]].
+'''ADDW''' (Add Word) is an [[SPC700]] command that adds a 16-bit [[direct page]] value to [[YA]].  The sum is stored in YA.
+==== Syntax ====
+<pre>
+ADDW YA, dp
+</pre>
 === See Also ===
@@ Line 45: / Line 50: @@
 === External Links ===
 * 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]
+* anomie: https://github.com/yupferris/TasmShiz/blob/8fabc9764c33a7ae2520a76d80ed7220bb939f12/spc700.txt#L317
 [[Category:ASM]]
 [[Category:SPC700]]
 [[Category:16-bit Operation Commands]]
+[[Category:Two-byte Instructions]]