參數(shù)資料
型號: μPD789F806Y
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 86/125頁
文件大?。?/td> 366K
代理商: ΜPD789F806Y
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
69
ROL
Rotate Left
Byte Data Rotation to the Left
[Instruction format]
ROL dst,cnt
[Operation]
(CY,dst
0
0dst
7
,dst
m+1
dst
m
)
×
one time
[Operand]
Mnemonic
Operand (dst,cnt)
ROL
A,1
[Flag]
Z
AC
CY
×
[Description]
The destination operand (dst) contents specified with the 1st operand are rotated to the left just once.
The MSB (bit 7) contents are simultaneously rotated to LSB (bit 0) and transferred to the CY flag.
CY
0
7
[Description example]
ROL A,1;
The A register contents are rotated to the left by one bit.
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