Rrca rotate right circular (accumulator) – Zilog Z80380 User Manual
Page 190
5-156
Z380
™
U
SER
'
S
M
ANUAL
DC-8297-03
Z
ILOG
RRCA
ROTATE RIGHT CIRCULAR (ACCUMULATOR)
RRCA
Operation:
tmp
←
A
C
←
A(0)
A(7)
←
tmp(0)
A(n)
←
tmp(n+1) for n = 0 to 6
The contents of the accumulator are rotated right one bit position. Bit 0 of the accumulator
is moved to the bit 7 position and also replaces the Carry flag.
Flags:
S:
Unaffected
Z:
Unaffected
H:
Cleared
P:
Unaffected
N:
Cleared
C:
Set if the bit rotated from bit 0 was a 1; cleared otherwise
Addressing
Execute
Mode
Syntax
Instruction Format
Time
Note
RRCA
00001111
2
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