參數(shù)資料
型號: UPD178F124
英文描述: 78K/0 Series for Instructions | User's Manual[10/2001]
中文描述: 78K線/ 0系列說明|用戶手冊[10/2001]
文件頁數(shù): 105/129頁
文件大?。?/td> 644K
代理商: UPD178F124
77
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
User's Manual U12326EJ4V0UM
Rotate Left
ROL
Byte Data Rotation to the Left
[Instruction format]
ROL dst, cnt
[Operation]
(CY, dst0
← dst7, dstm+1 ← dstm) × one time
[Operand]
Mnemonic
Operand(dst,cnt)
ROL
A, 1
[Flag]
ZAC
CY
×
[Description]
The destination operand (dst) contents specified by 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.
[Description example]
ROL A, 1; The A register contents are rotated to the left by one bit.
CY
0
7
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