Rr m, Operation op code, Operand – Zilog Z08470 User Manual

Page 237

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UM008007-0715

Z80 Instruction Description

Z80 CPU

User Manual

225

RR m

Operation

Op Code

RR

Operand

m

The m operand is any of r, (HL), (IX+d), or (lY+d), as defined for the analogous RLC
instructions. In the assembled object code, the possible op code/operand combinations are
specified as follows:

CY

0

7

m

0

0

0

0

1

r*

1

1

0

1

1

0

0

1

CB

1

1

0

1

1

0

0

1

CB

1

1

1

0

1

1

0

1

DD

1

1

0

1

1

0

0

1

CB

1

1

1

0

1

1

1

1

FD

1

1

0

1

1

0

0

1

CB

RR r*

RR (HL)

RR (IX+d)

RR (IY+d)

d

d

0

0

1

1

0

1

0

1

1E

0

0

1

1

0

1

0

1

1E

0

0

0

1

0

1

0

1

1E

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