Texas Instruments TMS320C67X/C67X+ DSP manual Zero a Register

ZERO Zero a Register

	Zero a Register
ZERO
Syntax		ZERO (.unit) dst
		.unit = .L1, .L2, .D1, .D2, .S1, .S2
Compatibility		C62x, C64x, C67x, and C67x+ CPU

Opcode

Opcode map field used...	For operand type...	Unit	Opfield
dst	sint	.L1, .L2	001 0111
dst	slong	.L1, .L2	011 0111
dst	sint	.D1, .D2	01 0001
dst	sint	.S1, .S2	01 0111

Description	The ZERO pseudo-operation fills the dst register with 0s by subtracting the dst
	from itself and placing the result in the dst.
	In the case where dst is sint, the assembler uses the MVK (.unit) 0, dst
	instruction.
	In the	case where dst is slong, the assembler uses the
	SUB (.unit) src1, src2, dst instruction.
Execution	if (cond)	dst − dst → dst
	else nop
Instruction Type	Single-cycle
Delay Slots	0

3-272 Instruction Set SPRU733