ADDW (SPC700): Difference between revisions

Revision as of 01:42, 13 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
		.	.		.

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

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

@@ Line 35: / Line 35: @@
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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 ====