Operation: MUL Function: Multiply Accumulator by B Syntax: MUL AB Instructions OpCode Bytes Cycles Flags MUL AB 0xA4 1 4 C, OV Description: Multiples the unsigned value of the Accumulator by the unsigned value of the "B" register. The least significant byte of the result is placed in the Accumulator and the most-significant-byte is placed in the "B" register. The Carry Flag (C) is always cleared. The Overflow Flag (OV) is set if the result is greater than 255 (if the most-significant byte is not zero), otherwise it is cleared. See Also: DIV, 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.