參數(shù)資料
型號: 4571
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(jī)的CMOS
文件頁數(shù): 102/126頁
文件大?。?/td> 1627K
代理商: 4571
Rev.1.02
May 25, 2007
Page 77 of 124
REJ03B0179-0102
4571 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
LXY x,y
(Load register X and Y with x and y)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
11 x3 x2 x1 x0 y3 y2 y1 y0 2 3x y 16
11
-
Continuous
description
Opera-
tion:
(X)
x x = 0 to 15
(Y)
y y = 0 to 15
Grouping:
RAM addresses
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.
LZ z
(Load register Z with z)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
100
10 Z1 Z0 2 04
8
+z 16
1
-
Opera-
tion:
(Z)
z z = 0 to 3
Grouping:
RAM addresses
Description: Loads the value z in the immediate field to register Z.
NOP
(No OPeration)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
000
00
00 2 00 0 16
11
-
Opera-
tion:
(PC)
(PC) + 1
Grouping:
Other operation
Description: No operation; Adds 1 to program counter value, and others
remain unchanged.
OP0A
(Output port P0 from Accumulator)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
0
010
00
00 2 22 0 16
11
-
Opera-
tion:
(P0)
(A)
Grouping:
Input/Output operation
Description: Outputs the contents of register A to port P0.
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