See: http://www.piclist.com/faq under routines / math / basic math Also, please don't post in HTML to the PICList. See http://www.piclist.com --- James Newton (PICList Admin #3) mailto:jamesnewton@piclist.com 1-619-652-0593 PIC/PICList FAQ: http://www.piclist.com or .org -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Saurabh Sinha Sent: Saturday, March 11, 2000 09:17 To: PICLIST@MITVMA.MIT.EDU Subject: Multiplication Hi, I needed some help in multiplication. I needed to multiply a 24 and a 8 bit number ==> result 32 bits Also, could someone please explain how the comf instruction works... eg. comf 1111 = 0000 ? Is that right? Thanks in advance for your help. Saurabh