Texas Instruments TMS320C67X/C67X+ DSP manual Add Using Word Addressing Mode, Addaw

ADDAW Add Using Word Addressing Mode

				Add Using Word Addressing Mode
ADDAW
Syntax					ADDAW (.unit) src2, src1, dst
					.unit = .D1 or .D2
Compatibility					C62x, C64x, C67x, and C67x+ CPU
Opcode
31	29	28	27	23		22	18	17	13	12	7	6	5	4	3	2	1	0

creg

z

dst

src2

src1

op

1 0 0 0 0 s p

3	1	5	5	5	6	1	1
			Opcode map field used...	For operand type...	Unit	Opfield
			src2	sint	.D1, .D2	11 1000
			src1	sint
			dst	sint
			src2	sint	.D1, .D2	11 1010
			src1	ucst5
			dst	sint

Description

Execution

Pipeline

src1 is added to src2 using the word addressing mode specified for src2. The addition defaults to linear mode. However, if src2 is one of A4−A7 or B4−B7, the mode can be changed to circular mode by writing the appropriate value to the AMR (see section 2.7.3, page 2-10). src1 is left shifted by 2. The result is placed in dst.

if (cond)	src2 +a src1 → dst
else nop
Pipeline	E1
stage
Read	src1, src2
Written	dst
Unit in use	.D

Instruction Type	Single-cycle
Delay Slots	0
See Also	ADD, ADDAB, ADDAD, ADDAH

3-54 Instruction Set SPRU733