RORC = Rotate Right through Carry
| Hex | Mnemonic | Cycles |
|---|---|---|
| CE 98 | RORC A | 12 |
| CE 99 | RORC B | 12 |
| CE 9A nn | RORC [N+#nn] | 20 |
| CE 9B | RORC [HL] | 16 |
Execute
A = Register A
B = Register B
[N+#nn] = Memory: (I shl 16) or (N shl 8) or #nn
[HL] = Memory: (I shl 16) or HL
; RORC Ds
;
; Ds = Source/Destination
Ds = (Ds SHR 1) OR (Carry SHL 7)
Description
"8-Bits Destination" bits are rotated right by 1 through Carry.
Conditions
Zero: Set when result is 0
Carry: Set when old bit 0 is 1
Sign: Set when bit 7 of the result is 1
Overflow remain unchanged
Examples
; A = 0x04
; F = (Carry=0)
RORC A
; A = 0x02
; F = (Zero=0):(Carry=0):(Sign=0)
; B = 0x45
; F = (Carry=1)
RORC B
; B = 0xA2
; F = (Zero=0):(Carry=1):(Sign=0)
; B = 0x84
; F = (Carry=0)
RORC B
; B = 0x42
; F = (Zero=0):(Carry=0):(Sign=0)
; [HL] = 0x01
; F = (Carry=0)
RORC [HL]
; [HL] = 0x00
; F = (Zero=1):(Carry=1):(Sign=0)
; [HL] = 0x01
; F = (Carry=1)
RORC [HL]
; [HL] = 0x80
; F = (Zero=0):(Carry=1):(Sign=1)