Check its status register, particular the carry bit. Regards, Tan Chun Chiek ----- Original Message ----- From: "Soon Lee" To: Sent: Wednesday, November 20, 2002 10:44 PM Subject: Test for OverFlow in 2' complement systems Hi all As I am pretty new to math in PIC just to check what are the method that we can use to check whether a math operation have cause any overflow. Can any one please enlighten me on this thanks -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.