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14
13
12
11
10
9
8
7
6
5
4
3
2
EFFECTIVE ADDRESS
0
1
0
1
CONDITION
1
1
I
MODE
REGISTER
OBee
15
14
13
12
11
10
9
8
7
5
4
2
1
CONDITION
REGISTER
DISPLACEMENT
TRAPee
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14
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12
11
10
9
8
7
6
5
4
3
2
o
I
1
I
0
I
1
I
CONDITION
I
1
I
1
I
1
I
1
I
1
I
OPMODE
OptiONAL WORD
OR LONG WORD
Opmode Field: 010= Word Operand 011 = Long Operand 100
=
No Operand
SUBQ
Bee
BRA
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14
13
12
11
10
9
8
7
6
5
4
3
2
EFFECTIVE ADDRESS
0
1
0
1
DATA
1
SIZE
I
MODE
REGISTER
Data Field: Three bits of immediate data; 000-111 represent values of 1-7; 000 represents 8
Size Field: 00 = Byte 01 = Word 10= Long
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14
13
12
11
10
9
8
7
6
5
4
3
2
o
I
1
I
1
I
o
I
CONDITION
I
8-BIT DISPLACEMENT
16-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT = $00
32-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT = $FF
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12
11
10
9
8
7
6
5
4
3
2
o
I
1
I
1
I
o
I
o
I
o
I
o
I
o
I
8-BIT DISPLACEMENT
16-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT = $00
32-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT = $FF
o
0
0
o
o
o
CPU32 REFERENCE MANUAL
INSTRUCTION SET
MOTOROLA
4-187
III
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