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MICROPROCESSOR INSTRUCTION REFERENCE->ROL

ROL   Rotate Accumulator or Memory Byte Left through carry
ROLA
ROLB
ROL

C <- b7 <-....<- b0 <- C

Condition Code Register:

H  Not affected
N  Set if result Negative, else cleared
Z  Set if result Zero, else cleared
V  <- b6 EOR b7 of original operand
C  <- b7 of original operand

    

Addressing mode	No of cycles	No of bytes
Implied:	2	1
Direct:	6	2
Extended:	7	3
Index/Indirect:	6+	2+