GMS36 Datasheet, PDF (48/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 5. INSTRUCTION
Category Mnemonic
Function
26
DY
à Y Y - 1
27 ^Arithmetic
EORM
à A A + M (X,Y)
28
NEGA
à A A + 1
29
ALEM
õ TEST A M(X,Y)
30
ALEI i
õ TEST A i
31
MNEZ
ó TEST M(X,Y) 0
32 Comparison
YNEA
ó TEST Y A
33
YNEI i
ó TEST Y i
34
KNEZ
ó TEST K 0
35
RNEZ
ó TEST R 0
36
LAK
à A K
37
Input /
38
Output
LAR
à A R
SO
à Output 0 at GMS36XXX, 1 at GMS37XXX
39
RO
à Output 1 at GMS36XXX, 0 at GMS37XXX
40
WDTR
Watch Dog Timer Reset
41
Control
42
STOP
LPY
Stop operation
à PMR Y
43
NOP
No operation
ST^*1
B
S
Z
E
E
N
N
N
N
N
S
S
S
S
S
S
S
S
Note) i = 0~f, n = 0~3, a = 6bit PC Address
*1 Column ST indicates conditions for changing status. Symbols have the following
meanings
S : On executing an instruction, status is unconditionally set.
C : Status is only set when carry or borrow has occurred in operation.
B : Status is only set when borrow has not occurred in operation.
E : Status is only set when equality is found in comparison.
N : Status is only set when equality is not found in comparison.
Z : Status is only set when the result is zero.
5-3