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HMS87C1X04B/08B/16B
ii
SEP. 2004 Ver 1.03
B. INSTRUCTION SET
1. ARITHMETIC/ LOGIC OPERATION
NO.
MNEMONIC
OP
CODE
BYTE
NO
CYCLE
NO
OPERATION
FLAG
NVGBHIZC
1
ADC #imm
04
2
2
Add with carry.
2ADC dp
05
2
3
A
← ( A ) + ( M ) + C
3
ADC dp + X
06
2
4
4
ADC !abs
07
3
4
NV--H-ZC
5
ADC !abs + Y
15
3
5
6
ADC [ dp + X ]
16
2
6
7
ADC [ dp ] + Y
17
2
6
8ADC { X }
14
1
3
9
AND #imm
84
2
2
Logical AND
10
AND dp
85
2
3
A
← ( A ) ∧ ( M )
11
AND dp + X
86
2
4
12
AND !abs
87
3
4
N-----Z-
13
AND !abs + Y
95
3
5
14
AND [ dp + X ]
96
2
6
15
AND [ dp ] + Y
97
2
6
16
AND { X }
94
1
3
17
ASL A
08
1
2
Arithmetic shift left
18
ASL dp
09
2
4
N-----ZC
19
ASL dp + X
19
2
5
20
ASL !abs
18
3
5
21
CMP #imm
44
2
2
Compare accumulator contents with memory contents
22
CMP dp
45
2
3
( A ) - ( M )
23
CMP dp + X
46
2
4
24
CMP !abs
47
3
4
N-----ZC
25
CMP !abs + Y
55
3
5
26
CMP [ dp + X ]
56
2
6
27
CMP [ dp ] + Y
57
2
6
28
CMP { X }
54
1
3
29
CMPX #imm
5E
2
2
Compare X contents with memory contents
30
CMPX dp
6C
2
3
( X ) - ( M )
N-----ZC
31
CMPX !abs
7C
3
4
32
CMPY #imm
7E
2
2
Compare Y contents with memory contents
33
CMPY dp
8C
2
3
( Y ) - ( M )
N-----ZC
34
CMPY !abs
9C
3
4
35
COM dp
2C
2
4
1’S Complement : ( dp )
← ~( dp )
N-----Z-
36
DAA
DF
1
3
Decimal adjust for addition
N-----ZC
37
DAS
CF
1
3
Decimal adjust for subtraction
N-----ZC
38
DEC A
A8
1
2
Decrement
N-----Z-
39
DEC dp
A9
2
4
M
← ( M ) - 1
40
DEC dp + X
B9
2
5
N-----Z-
41
DEC !abs
B8
3
5
42
DEC X
AF
1
2
43
DEC Y
BE
1
2
44
DIV
9B
1
12
Divide : YA / X Q: A, R: Y
NV--H-Z-
0
“0”
C
7654321
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