Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!apple!usc!cs.utexas.edu!uunet!pdn!boake2!ckctpa From: crash@ckctpa.UUCP (Frank J. Edwards) Newsgroups: comp.sys.amiga.tech Subject: Re: software "exceptions" Message-ID: <147@ckctpa.UUCP> Date: 2 Aug 89 18:17:47 GMT Organization: ComputerKnowledge Corp, Clearwater FL Lines: 22 >"Frank J. Edwards" writes in message <143@ckctpa.UUCP> >> I've been trying to use the Amiga's signalling system to cause an >> "exception" (thats CBM's term, not Motorola's). > > Actually, CBM's term is Software Interrupt last time I checked. > > Valentin No, a software interrupt *IS* a software interrupt (flag bit in the MsgPort structure is PA_SOFTINT); an exception is analagous to the Un*x signals (flag bit is PA_SIGNAL plus tc_SigExcept bit must be set); and a trap *IS* a trap (no MsgPort equivalent). Concerning CBMs terminology, I guess "2 out of 3 ain't bad!!" :-) -- #include /* My employer isn't even involved! */ Frank J. Edwards ComputerKnowledge Corporation 2677 Arjay Court 12740 Hillcrest Rd, Suite 212 Palm Harbor, FL 34684-4505 Dallas, TX 75230 (800) 385-9700