Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!zaphod.mps.ohio-state.edu!think!snorkelwacker!apple!fox!portal!cup.portal.com!rpA-Inc From: rpA-Inc@cup.portal.com (RP and Ainc) Newsgroups: alt.msdos.programmer Subject: Re: Int 3 Message-ID: <26052@cup.portal.com> Date: 18 Jan 90 02:49:25 GMT References: <10442.740.forumexp@mts.rpi.edu> Organization: The Portal System (TM) Lines: 9 Int 03h (along with 01h) is used for debugging programs. Debuggers load an interrupt 03h instruction at breakpoints and then let the program to run. Int 01h is used for traps. ramin firoozye rp&A Inc. SF.