user manual

INSTRUCTION DESCRIPTIONS
MOTOROLA INSTRUCTION SET DETAILS A - 231
Instruction Format 2:
MPY (±)S,#n,D
Opcode 2:
Instruction Fields:
S Q Q Sign k D d
Y1 0 0 + 0 A 0
X0 0 1 – 1 B 1
Y0 1 0
X1 1 1
n sssss constant
1 00001 010000000000000000000000
2 00010 001000000000000000000000
3 00011 000100000000000000000000
4 00100 000010000000000000000000
5 00101 000001000000000000000000
6 00110 000000100000000000000000
7 00111 000000010000000000000000
8 01000 000000001000000000000000
9 01001 000000000100000000000000
10 01010 000000000010000000000000
11 01011 000000000001000000000000
12 01100 000000000000100000000000
13 01101 000000000000010000000000
14 01110 000000000000001000000000
15 01111 000000000000000100000000
16 10000 000000000000000010000000
17 10001 000000000000000001000000
18 10010 000000000000000000100000
19 10011 000000000000000000010000
20 10100 000000000000000000001000
21 10101 000000000000000000000100
22 10110 000000000000000000000010
23 10111 000000000000000000000001
Timing: 2 oscillator clock cycles
Memory: 1 program word
MPY Signed Multiply
MPY
23 16 15 8 7 0
00000001000sssss11QQdk00