Texas Instruments TMS320C3x - Manual (Page 620)

MPYI3 Multiply Integer, 3-Operand
13-162
Example 1 MPYI3 *AR4,*–AR1(1),R2
Before Instruction After Instruction
R2 00 0000 0000 R2 00 0000 94AC
AR1 80 98F3 AR1 80 98F3
AR4 80 9850 AR4 80 9850
LUF 0 LUF 0
LV 0 LV 0
UF 0 UF 0
N 0 N 0
Z 0 Z 0
V 0 V 0
C 0 C 0
Data memory
809850h 0AD 809850h 0AD
8098F2h 0DC 8098F2h 0DC
173
38,060
220
173
220
Example 2 MPYI3 * – – AR4(IR0),R2,R7
Before Instruction After Instruction
R2 00 0000 00C8 R2 00 0000 00C8
R7 00 0000 0000 R7 00 0000 2710
AR4 80 99F8 AR4 80 99F0
IR0 8 IR0 8
LUF 0 LUF 0
LV 0 LV 0
UF 0 UF 0
N 0 N 0
Z 0 Z 0
V 0 V 0
C 0 C 0
Data memory
8099F0h 32 8099F0h 32
200 200
50 50
10,000
Note: Cycle Count
See Section 8.5.2, Data Loads and Stores, on page 8-24 for the effects of
operand ordering on the cycle count.