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MICROPROCESSOR INSTRUCTION REFERENCE->RRD
RRD Rotate right decimal memory location addressed by HL and accumulator
(HL) high nibble -> (HL) low nibble
Acc. low nibble -> (HL) high nibble
(HL) low nibble -> Acc. low nibble
Flags
S | Set if result -ve, else cleared |
Z | Set if result zero, else cleared |
H | Cleared |
P/V | Set if parity even, else cleared |
N | Cleared |
C | Not affected |
No of | M | T | usec @ |
bytes | cycles | states | 2 MHz |
2 | 5 | 18 | 9 |