<< Previous | Next >>

> RLC (HL)
> RLC (IX+d)
> RLC (IY+d) Rotate Left Affect Carry Rabbit 2000/3000/4000 Instruction

> Opcode | Instruction | Clocks | Operation
> CB 06 | RLC (HL) | 10 (2,2,1,2,3) | (HL) = {(HL)[6,0],(HL)[7]} CF = (HL)[7]
> DD CB d 06 | RLC (IX+d) | 13 (2,2,2,2,2,3) | (IX+d) = {(IX+d)[6,0],(IX+d)[7]} CF = (IX+d)[7]
> FD CB d 06 | RLC (IY+d) | 13 (2,2,2,2,2,3) | (IY+d) = {(IY+d)[6,0],(IY+d)[7]} CF = (IY+d)[7]

> Flags | ALTD | IOI/IOE
> S | Z | L/V | C | F | R | SP | S | D
> · | · | L | · | · |  |  | · | ·

> #### Description

> Rotates to the left the data whose address is:

> - HL, or
> - the sum of IX and the 8-bit signed displacement d, or
> - the sum of IY and d.

> Each bit moves to the next highest-order bit position (bit 0 moves to bit 1, etc.). Bit 7 moves to both bit 0 and the C flag. See Figure 7 for an illustration.

> #### Example

> If HL contains 0x4545, the byte in the memory location 0x4545 is 0110 1010, and the C flag is set, then after the execution of the operation:

>     RLC (HL)

> the byte in memory location 0x4545 will contain 1101 0100 and the C flag will be reset.

<< Previous | Next >>