Texas Instruments TMS320C2XX - Manual (Page 268)

Multiply MPY
7-115 Assembly Language Instructions
Example 2 MPY *,AR2
Before Instruction After Instruction
ARP 1 ARP 2
AR1 40Dh AR1 40Dh
Data Memory Data Memory
40Dh 7h 40Dh 7h
TREG 6h TREG 6h
PREG 36h PREG 2Ah
Example 3 MPY #031h
Before Instruction After Instruction
TREG 2h TREG 2h
PREG 36h PREG 62h