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Operation description, Condition bits affected attributes – Zilog EZ80F916 User Manual

Page 327

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eZ80

®

CPU

User Manual

UM007715-0415

CPU Instruction Set

318

RRA

Rotate Right–Accumulator

Operation

Description

The CPU manipulates the contents of the accumulator, A, by rotating them right one bit

position. The CPU next copies the contents of bit 0 into the Carry Flag and copies the pre-

vious contents of the Carry Flag into bit 7.

Condition Bits Affected

Attributes

S

Not affected.

Z

Not affected.

H

Reset.

P/V

Not affected.

N

Reset.

C

Data from bit 0 of the accumulator.

Mnemonic Operand

ADL Mode Cycle

Opcode (hex)

RRA

X

1

1F

C

7

0

A

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