Zilog Z08470 User Manual
Page 221
UM008007-0715
Z80 Instruction Description
Z80 CPU
User Manual
209
RRA
Operation
Op Code
RRA
Operands
None.
Description
The contents of the Accumulator (Register A) are rotated right 1 bit position through the
Carry flag. The previous contents of the Carry flag are copied to bit 7. Bit 0 is the least-
significant bit.
Condition Bits Affected
S is not affected.
Z is not affected.
H is reset.
P/V is not affected.
N is reset.
C is data from bit 0 of Accumulator.
M Cycles
T States
4 MHz E.T.
1
4
1.00
CY
0
7
A
0
0
1
1
1
1
0
1
1F