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Zilog Z8F0130 User Manual

Page 228

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eZ8

CPU Core

User Manual

UM012820-0810

RR Instruction

213

RR

Definition

Rotate Right.

Syntax

RR dst

Operation

Description

The destination operand contents rotate to the right by one bit position.
The initial value of Bit 0 is moved to Bit 7 and also into the Carry (C)
flag.

Flags

C

Set if the bit rotated from the least-significant bit position was 1
(that is, Bit 0 was 1)

Z

Set if the result is zero; reset otherwise

S

Set if Bit 7 of the result is set; reset otherwise

V

Set if an arithmetic overflow occurs; reset otherwise

D

Unaffected

H

Unaffected

D7 D6 D5 D4 D3 D2 D1 D0

dst

C