PPT Slide

A0 A

A1 X

A2 count=40

A3 A*X

A4 Y

A15

MVK .S 40, A2

LDH .D *MemA, A0

LDH .D *MemX, A1

MPY .M A0, A1, A3

ADD .L A3, A4, A4

SUB .L A2, 1, A2

B .S loop

STH .D A4, *MemY

32-bits

Data Memory

.M

.L

Register File A

.D

.S

loop:

.

.

.

3

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The correct instruction is subtract, .L, A2, one, A2. This subtracts one from the value of the contents of register A2, and places the result back in A2.