MOV (SPC700)

Basic Info (Group 1)
Addressing Mode	Opcode	Length	Speed
Immediate	E8	2 bytes	3 cycles
Implied (type 1)	E6	1 byte	3 cycles
Implied (type 1)	BF	1 byte	4 cycles
Direct Page	E4	2 bytes	3 cycles
Direct Page Indexed by X	F4	2 bytes	4 cycles
Absolute	E5	3 bytes	4 cycles
Absolute Indexed by X	F5	3 bytes	5 cycles
Absolute Indexed by Y	F6	3 bytes	5 cycles
Direct Page Indexed Indirect by X	E7	2 bytes	6 cycles
Direct Page Indirect Indexed by Y	F7	2 bytes	6 cycles
Immediate	CD	2 bytes	2 cycles
Direct Page	F8	2 bytes	3 cycles
Direct Page Indexed by Y	F9	2 bytes	4 cycles
Absolute	E9	3 bytes	4 cycles
Immediate	8D	2 bytes	2 cycles
Direct Page	EB	2 bytes	3 cycles
Direct Page Indexed by X	FB	2 bytes	4 cycles
Absolute	EC	3 bytes	4 cycles

Flags Affected (Group 1)
N	V	P	B	H	I	Z	C
N	.	.	.	.	.	Z	.

Basic Info (Group 2)
Addressing Mode	Opcode	Length	Speed
Implied (type 1)	C6	1 byte	4 cycles
Implied (type 1)	AF	1 byte	4 cycles
Direct Page	C4	2 bytes	4 cycles
Direct Page Indexed by X	D4	2 bytes	5 cycles
Absolute	C5	3 bytes	5 cycles
Absolute Indexed by X	D5	3 bytes	6 cycles
Absolute Indexed by Y	D6	3 bytes	6 cycles
Direct Page Indexed Indirect by X	C7	2 bytes	7 cycles
Direct Page Indirect Indexed by Y	D7	2 bytes	6 cycles
Direct Page	D8	2 bytes	4 cycles
Direct Page Indexed by Y	D9	2 bytes	5 cycles
Absolute	C9	3 bytes	5 cycles
Direct Page	CB	2 bytes	4 cycles
Direct Page Indexed by X	DB	2 bytes	5 cycles
Absolute	CC	3 bytes	5 cycles

Flags Affected (Group 2)
N	V	P	B	H	I	Z	C
.	.	.	.	.	.	.	.

Basic Info (Group 3)
Addressing Mode	Opcode	Length	Speed
Implied (type 1)	7D	1 byte	2 cycles
Implied (type 1)	DD	1 byte	2 cycles
Implied (type 1)	5D	1 byte	2 cycles
Implied (type 1)	FD	1 byte	2 cycles
Implied (type 1)	9D	1 byte	2 cycles

Flags Affected (Group 3)
N	V	P	B	H	I	Z	C
N	.	.	.	.	.	Z	.

Basic Info (Group 3 cont.)
Addressing Mode	Opcode	Length	Speed
Implied (type 1)	BD	1 byte	2 cycles
Direct Page	FA	3 bytes	5 cycles
Direct Page Immediate	8F	3 bytes	5 cycles

Flags Affected (Group 3 cont.)
N	V	P	B	H	I	Z	C
.	.	.	.	.	.	.	.

MOV is an SPC700 instruction that moves a value. There are a large number of variations for this instruction, and they are divided into three groups:

• In Group 1, MOV moves values from ARAM to registers.
• In Group 2, MOV moves values from registers to ARAM.
• In Group 3, MOV moves values from registers to registers or from ARAM to ARAM.

Most MOV variations that target memory perform a read cycle on the destination, which will reset T2OUT.^[3] The operands are stored in the instruction stream in the opposite order they appear in the assembler source. In the assembler source, the operand on the right is the source and the operand on the left is the destination.

The official manual is missing a "." after each Z in the NVPBHIZC column for Groups 1 & 3.

Syntax

Group 1:

MOV A, #imm
MOV A, (X)
MOV A, (X)+
MOV A, dp
MOV A, dp+X
MOV A, !abs
MOV A, !abs+X
MOV A, !abs+Y
MOV A, [dp+X]
MOV A, [dp]+Y
MOV X, #imm
MOV X, dp
MOV X, dp+Y
MOV X, !abs
MOV Y, #imm
MOV Y, dp
MOV Y, dp+X
MOV Y, !abs

Group 2:

MOV (X), A
MOV (X)+, A
MOV dp, A
MOV dp+X, A
MOV !abs, A
MOV !abs+X, A
MOV !abs+Y, A
MOV [dp+X], A
MOV [dp]+Y, A
MOV dp, X
MOV dp+Y, X
MOV !abs, X
MOV dp, Y
MOV dp+X, Y
MOV !abs, Y

Group 3:

MOV A, X
MOV A, Y
MOV X, A
MOV Y, A
MOV X, SP
MOV SP, X
MOV dp<d>, dp<s>
MOV dp, #imm

Some people find the official MOV mnemonic cumbersome and prefer to use an assembler that supports 65c816-style mnemonics such as TAX and TAY.

See Also

• MOVW
• MOV1

External Links

1. Official Super Nintendo development manual on MOV: Appendix C-3 of Book I
2. Appendix C-4 of Book I lbid
3. anomie's SPC700 doc