Instruction Reference Manual
123
Description
Rotates to the right with the C flag the data in DE or HL. Bit 0 moves to the C flag, bits 1 through 15 move to
the next lowest-order bit position, and the C flag moves to bit 15 (see figure below).
Figure 5: The bit logic for the RR instruction.
RR DE
RR HL
Opcode
Instruction
Clocks
Operation
FB
RR DE
2
{DE,CF} = {CF,DE}
FC
RR HL
2
{HL,CF} = {CF,HL}
Flags
ALTD
I/O
S
Z
L/V
C
F
R
SP
S
D
•
•
L
•
•
•
15
0
CF
Summary of Contents for 2000
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