MOVW (SPC700): Difference between revisions

Revision as of 02:27, 17 July 2023


Basic Info (to YA)
Addressing Mode	Opcode	Length	Speed
	BA	2 bytes	5 cycles


Flags Clobbered (to YA)
N	V	P	B	H	I	Z	C
	.	.	.	.	.


Basic Info (from YA)
Addressing Mode	Opcode	Length	Speed
	DA	2 bytes	4 cycles


Flags Clobbered (from YA)
N	V	P	B	H	I	Z	C
.	.	.	.	.	.	.	.

MOVW (Move Word) is an SPC700 instruction that moves a 16-bit ARAM value to or from the YA register. There are no variations of MOVW that do not operate on YA.

Example

From the IPL ROM,

MOVW YA, $F6	; load the byte at ARAM location $F6 into A and the byte at $F7 into Y
MOVW $00, YA	; store the value in Y to ARAM location $01 and the value in A to $00

External Links

Official Super Nintendo development manual on MOVW: Appendix C-8 of Book I

@@ Line 84: / Line 84: @@
 === See Also ===
 * [[MOV]]
+* [[MOV1]]
 === External Links ===