Operation: SWAP Function: Swap Accumulator Nibbles Syntax: SWAP A Instructions OpCode Bytes Cycles Flags SWAP A 0xC4 1 1 None Description: SWAP swaps bits 0-3 of the Accumulator with bits 4-7 of the Accumulator. This instruction is identical to executing "RR A" or "RL A" four times. See Also: RL, RLC, RR, RRC, Instruction Set (C) Copyright 1997 - 2008 by Vault Information Services LLC. All Rights Reserved. Information provided "as-is" without warranty. Please see details. Contact us for usage and copy permission.