Xref: utzoo comp.sys.mac.misc:6957 comp.sys.mac.hardware:7487 Path: utzoo!attcan!telly!lethe!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!ncar!midway!ellis.uchicago.edu!dwal From: dwal@ellis.uchicago.edu (David Walton) Newsgroups: comp.sys.mac.misc,comp.sys.mac.hardware Subject: Re: Using the Programmer's Switch (none on LC and IIsi???) Keywords: crash 'n restart Message-ID: <1990Dec19.225501.18240@midway.uchicago.edu> Date: 19 Dec 90 22:55:01 GMT References: <1053@sppy00.UUCP> <1990Dec18.052752.8420@cs.umn.edu> Sender: news@midway.uchicago.edu (News Administrator) Organization: University of Chicago, Academic and Public Computing Lines: 35 In article ingemar@isy.liu.se (Ingemar Ragnemalm) writes: > >At MacPlus and SE, I use the A9F4 trick all the time, but why doesn't this >seem to work on a Mac II? Whether the _ExitToShell call (trap A9F4) works depends on what kind of condition the Macintosh is in following a crash. If something's gone off and stomped all over the System heap, it may not work. I've been generally successful when using the ROM debugger both to return to the Finder (Exit To Shell) and to Reboot or Shut down. >[stuff deleted] >And, isn't it possible to get a programmer's switch for LC or IIsi? >My dealer say it isn't. Can the "Pkey INIT" help me out? (I don't have >access to any LC or IIsi to try it on at the moment.) (In case you didn't >know, Pkey is a nice little INIT that turns the start button in the corner >of the keyboard into an interrupt switch.) Your dealer is correct: there's not programmer's switch. On these models, the start button is the programmer's switch, in combination with a set of modifier keys: Command-Control-Power restarts the machine, and Command-Power generates a non-maskable interrupt. I believe that Macsbug version 6.2b1 minimum must be installed for the NMI to be generated. Some INITs, I think (perhaps Programmer's Key) will let you map these sequences to a different combination. >Ingemar Ragnemalm -- David Walton Internet: dwal@midway.uchicago.edu University of Chicago { Any opinions found herein are mine, not } Computing Organizations { those of my employers (or anybody else). }