CLR1 (SPC700)

Basic Info
Addressing Mode	Opcode	Length	Speed
Direct Page	12	2 bytes	4 cycles
Direct Page	32	2 bytes	4 cycles
Direct Page	52	2 bytes	4 cycles
Direct Page	72	2 bytes	4 cycles
Direct Page	92	2 bytes	4 cycles
Direct Page	B2	2 bytes	4 cycles
Direct Page	D2	2 bytes	4 cycles
Direct Page	F2	2 bytes	4 cycles

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

CLR1 is an SPC700 command that clears a bit in a direct page byte. The byte following the opcode determines which byte. The high nibble of the opcode determines which bit within that byte.

See Also

• SET1
• TCLR1
• RMB

External Links

• Official Nintendo documentation on CLR1: Table C-18 in Appendix C-9 of Book I