參數資料
型號: M34571G4
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機的CMOS
文件頁數: 77/126頁
文件大?。?/td> 1627K
代理商: M34571G4
Rev.1.02
REJ03B0179-0102
May 25, 2007
Page 77 of 124
4571 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
LXY x,y
(Load register X and Y with x and y)
Instruc-
tion
code
1
1 x
3
x
2
x
1
x
0
y
3
y
2
y
1
y
0
2
D
9
D
0
Number of
words
Number of
cycles
Flag CY
Skip condition
3
x
y 16
1
1
-
Continuous
description
Opera-
tion:
(X)
x x = 0 to 15
(Y)
y y = 0 to 15
Grouping:
Description: Loads the value x in the immediate field to register X, and
the value y in the immediate field to register Y. When the
LXY instructions are continuously coded and executed,
only the first LXY instruction is executed and other LXY
instructions coded continuously are skipped.
RAM addresses
LZ z
(Load register Z with z)
Instruc-
tion
code
0
0
D
9
D
0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
1
0
0
1
0 Z
1
Z
0
2
0
4
8
+z16
1
1
-
-
Opera-
tion:
(Z)
z z = 0 to 3
Grouping:
Description: Loads the value z in the immediate field to register Z.
RAM addresses
NOP
(No OPeration)
Instruc-
tion
code
0
D
9
D
0
0 2
Number of
words
Number of
cycles
Flag CY
Skip condition
0
0
0
0
0
0
0
0
0
0
0 16
1
1
-
-
Opera-
tion:
(PC)
(PC) + 1
Grouping:
Description: No operation; Adds 1 to program counter value, and others
remain unchanged.
Other operation
OP0A
(Output port P0 from Accumulator)
Instruc-
tion
code
1
0
0
0
D
9
D
0
0 2
Number of
words
Number of
cycles
Flag CY
Skip condition
1
0
0
0
0
2
2
0 16
1
1
-
-
Opera-
tion:
(P0)
(A)
Grouping:
Description: Outputs the contents of register A to port P0.
Input/Output operation
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