ZiLOG eZ80 User Manual

eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
314
RR (HL)
Rotate Right
Operation
Description
The (HL) operand is an 8-bit value at the memory location specified by the contents of the
multibyte register (HL). The CPU manipulates the contents of this memory location, (HL),
by rotating them right one bit position. The CPU next copies the contents of bit 0 into the
Carry Flag and copies the previous contents of the Carry Flag into bit 7 of the memory
location, (HL).
Condition Bits Affected
\
Attributes
S Set if result is negative; reset otherwise.
Z Set if result is 0; reset otherwise.
H Reset.
P/V Set if parity is even; reset otherwise.
N Reset.
C Data from bit 0 of the source.
Mnemonic Operand ADL Mode Cycle Opcode (hex)
RR (HL) X 5 CB, 1E
RR.S (HL) 1 6 52, CB, 1E
RR.L (HL) 0 6 49, CB, 1E
C
7
0
(HL)

ZiLOG eZ80 Specifications

General

Brand	ZiLOG
Model	eZ80
Category	Computer Hardware
Language	English