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MULS
Instruction Format (word form):
15
14
13
1
1
0
Instruction Fields:
Register field — Specifies a data register as the destination.
Effective Address field — Specifies the source operand. Only data addressing modes
are allowed as shown:
Addressing Mode
Dn
An
(An)
(An) +
– (An)
(d
, An)
16
(d
, An, Xn)
8
(bd, An, Xn)
MOTOROLA
4-108
Signed Multiply
12
11
10
9
0
REGISTER
Mode
Register
000
Reg. number: Dn
—
—
010
Reg. number: An
011
Reg. number: An
100
Reg. number: An
101
Reg. number: An
110
Reg. number: An
110
Reg. number: An
INSTRUCTION SET
8
7
6
5
1
1
1
Addressing Mode
(xxx).W
(xxx).L
#〈data〉
(d
, PC)
16
(d
, PC, Xn)
8
(bd, PC, Xn)
MULS
4
3
2
1
EFFECTIVE ADDRESS
MODE
REGISTER
Mode
Register
111
000
111
001
111
100
111
010
111
011
111
011
REFERENCE MANUAL
0
CPU32
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