Texas Instruments TMS320C67X/C67X+ DSP User Manual
Page 126
ADD2
Add Two 16-Bit Integers on Upper and Lower Register Halves
3-66
Instruction Set
SPRU733
Execution
if (cond)
{
msb16(src1) + msb16(src2) → msb16(dst);
lsb16(src1) + lsb16(src2) → lsb16(dst);
}
else nop
Pipeline
Stage
E1
Read
src1, src2
Written
dst
Unit in use
.S
Instruction Type
Single-cycle
Delay Slots
0
See Also
ADD, ADDU, SUB2
Example
ADD2 .S1X
A1,B1,A2
Before instruction
1 cycle after instruction
A1 0021 37E1h
33 14305
A1 0021 37E1h
A2 xxxx xxxxh
A2 03BB 1C99h
955 7321
B1 039A E4B8h
922 58552
B1 039A E4B8h
Pipeline