PM Opc ROLC

ROLC = Rotate Left through Carry

Hex	Mnemonic	Cycles
CE 90	ROLC A	12
CE 91	ROLC B	12
CE 92 nn	ROLC [N+#nn]	20
CE 93	ROLC [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

; ROLC Ds
;
; Ds = Source/Destination

Ds = (Ds SHL 1) OR Carry

Description

"8-Bits Destination" bits are rotated left by 1 through Carry.

Conditions

Zero: Set when result is 0

Carry: Set when old bit 7 is 1

Sign: Set when bit 7 of the result is 1

Overflow remain unchanged

Examples

; A = 0x04
; F = (Carry=0)
ROLC A
; A = 0x08
; F = (Zero=0):(Carry=0):(Sign=0)

; B = 0x45
; F = (Carry=1)
ROLC B
; B = 0x8B
; F = (Zero=0):(Carry=0):(Sign=1)

; B = 0x84
; F = (Carry=0)
ROLC B
; B = 0x08
; F = (Zero=0):(Carry=1):(Sign=0)

; [HL] = 0x80
; F = (Carry=0)
ROLC [HL]
; [HL] = 0x00
; F = (Zero=1):(Carry=1):(Sign=0)

; [HL] = 0x80
; F = (Carry=1)
ROLC [HL]
; [HL] = 0x01
; F = (Zero=0):(Carry=1):(Sign=0)

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