Operation: NOP Function: None, waste time Syntax: No Operation Instructions OpCode Bytes Cycles Flags NOP 0x00 1 1 None Description: NOP, as it’s name suggests, causes No Operation to take place for one machine cycle. NOP is generally used only for timing purposes. Absolutely no flags or registers are affected. See Also: 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.