SUBW (SPC700): Difference between revisions

Revision as of 01:43, 13 July 2024


Basic Info
Addressing Mode	Opcode	Length	Speed
Direct Page	9A	2 bytes	5 cycles


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

SUBW (Subtract Word) is an SPC700 command that subtracts a 16-bit direct page word from YA. The difference is stored in YA.

SUBW YA, dp

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

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-'''SUBW''' (Subtract Word) is an [[SPC700]] command that subtracts a 16-bit [[direct page]] word from [[YA]].
+'''SUBW''' (Subtract Word) is an [[SPC700]] command that subtracts a 16-bit [[direct page]] word from [[YA]].  The difference is stored in YA.
 ==== Syntax ====