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參數資料
型號: W741C20X
廠商: WINBOND ELECTRONICS CORP
英文描述: 4-BIT MICROCONTROLLER
中文描述: 4位微控制器
文件頁數: 74/84頁
文件大小: 486K
代理商: W741C20X
Preliminary W741C20X
- 74 -
Instruction Set Table 2, continued
SHRC R
SHift Right R with CF and MSB = 0
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
0
1
0
0
1
1
0
1
0
R6
R5
R4
R3
R2
R1
R0
1
ACC.n, R.n
(R.n+1); ACC.3, R.3
0; CF
R.0
The contents of the ACC and the data memory location addressed by R6 to
R0 are shifted right one bit, but bit 0 is shifted into CF, and bit 3 (MSB) is
replaced with "0." The same contents are loaded into the ACC.
CF & ZF
SKB0 R
If bit 0 of R is equal to 1 then skip
Machine Code:
Machine Cycle:
Operation:
Description:
1
0
0
0
1
0
0
0
0
R6
R5
R4
R3
R2
R1
R0
1
PC
(PC) + 2; if R.0 = 1
1
If bit 0 of R is equal to 1, the program counter is incremented by 2 and a
skip is produced. If bit 0 of R is not equal to 1, the program counter (PC) is
incremented.
SKB1 R
If bit 1 of R is equal to 1 then skip
Machine Code:
Machine Cycle:
Operation:
Description:
1
0
0
0
1
0
0
0
1
R6
R5
R4
R3
R2
R1
R0
1
PC
(PC) + 2; if R.1 = 1
1
If bit 1 of R is equal to 1, the program counter is incremented by 2 and a
skip is produced. If bit 1 of R is not equal to 1, the program counter (PC) is
incremented.
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