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位微機的CMOS
文件頁數(shù): 103/126頁
文件大?。?/td> 1627K
代理商: 4571
Rev.1.02
May 25, 2007
Page 78 of 124
REJ03B0179-0102
4571 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
OP1A
(Output port P1 from Accumulator)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
0
010
00
01 2 22 1 16
11
-
Opera-
tion:
(P1)
(A)
Grouping:
Input/Output operation
Description: Outputs the contents of register A to port P1.
OP2A
(Output port P2 from Accumulator)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
0
010
00
10 2 22 2 16
11
-
Opera-
tion:
(P21, P20)
(A1, A0)
Grouping:
Input/Output operation
Description: Outputs the contents of the low-order 2 bits (A1, A0) of reg-
ister A to port P2.
OP3A
(Output port P3 from Accumulator)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
0
010
00
11 2 22 3 16
11
-
Opera-
tion:
(P31, P30)
(A1, A0)
Grouping:
Input/Output operation
Description: Outputs the contents of the low-order 2 bits (A1, A0) of reg-
ister A to port P3.
OR
(logical OR between accumulator and memory)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
001
10
01 2 01 9 16
11
-
Opera-
tion:
(A)
(A) OR (M(DP))
Grouping:
Arithmetic operation
Description: Takes the OR operation between the contents of register A
and the contents of M(DP), and stores the result in register
A.
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