Operation: XCHD Function: Exchange Digit Syntax: XCHD A,[@R0/@R1] Instructions OpCode Bytes Cycles Flags XCHD A,@R0 0xD6 1 1 None XCHD A,@R1 0xD7 1 1 None Description: Exchanges bits 0-3 of the Accumulator with bits 0-3 of the Internal RAM address pointed to indirectly by R0 or R1. Bits 4-7 of each register are unaffected. See Also: DA, 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.