GMS81C50 Datasheet, PDF (90/99 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCONTROLLERS

Appendix A. GMS800 Series Instruction
2.1 Instruction Table by Function
1. Arithmetic/Logic Operation
NO.
MNENONIC
1 ADC #imm
2 ADC dp
3 ADC dp + X
4 ADC !abs
5 ADC !abs+Y
6 ADC [dp+X]
7 ADC [dp]+Y
8 ADC {X}
9 AND #imm
10 AND dp
11 AND dp + X
12 AND !abs
13 AND !abs+Y
14 AND [dp+X]
15 AND [dp] + Y
16 AND {X}
17 ASL A
18 ASL dp
19 ASL dp + X
20 ASL !abs
21 CMP #imm
22 CMP dp
23 CMP dp + X
24 CMP !abs
25 CMP !abs + Y
26 CMP [dp + X]
27 CMP [dp] + Y
28 CMP {X}
29 CMPX #imm
30 CMPX dp
31 CMPX !abs
32 CMPY #imm
33 CMPY dp
34 CMPY !abs
35 COM dp
36 DAA
37 DAS
38 DEC A
39 DEC dp
40 DEC dp + X
41 DEC !abs
42 DEC X
43 DEC Y
44 DIV
OP
CODE
04
05
06
07
15
16
17
14
84
85
86
87
95
96
97
94
08
09
19
18
44
45
46
47
55
56
57
54
5E
6C
7C
7E
8C
9C
2C
DF
CF
A8
A9
B9
B8
AF
BE
9B
BYTE
NO.
2
2
2
3
3
2
2
1
2
2
2
3
3
2
2
1
1
2
2
3
2
2
2
3
3
2
2
1
2
2
3
2
2
3
2
1
1
1
2
2
3
1
1
1
CYCLE
NO
2
3
4
4
5
6
6
3
2
3
4
4
5
6
6
3
2
4
5
5
2
3
4
4
5
6
6
3
2
3
4
2
3
4
4
3
3
2
4
5
5
2
2
12
Add with carry.
A ← A + (M) + C
OPERATION
Logical AND
A ← A ^ (M)
Arithmetic shift left
C 76543210
← ← ← ← ← ← ← ← ← ← "0"
Compare accumulator contents with memory contents
A - (M)
Compare X contents with memory contents
X - (M)
Compare Y contents with memory contents
Y - (M)
1’s complement : (dp) ← ~(dp)
Decimal adjust for addition
Decimal adjust for substraction
Decrement
M←M-1
Divide : YA/A ← Q:A, R:Y
FLAG
NVGBHIZC
NV - - H - ZC
N-----Z-
N - - - - - ZC
N - - - - - ZC
N - - - - - ZC
N - - - - - ZC
N-----Z-
N - - - - - ZC
N - - - - - ZC
N-----Z-
NV - - H - Z -
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