[comp.sys.mac] Interrupt switch doesn't work

hellerst@husc4.HARVARD.EDU (Joe Hellerstein) (10/06/88)

I've noticed a bizarre problem with my Mac Plus recently.  When I hit the
interrupt on the programmer's switch, I don't get thrown into the
debugger box.  The mouse and keyboard seem to freeze up.  At first I thought
this might be due to some weird software in my System, but even when I 
shut off my hard disk and booted off of the original system diskette I 't
couldn't get the debugger box.
	Also, if I install MacsBug, things work fine with it.  

	Any guesses what's going on?

Joe Hellerstein

levin@bbn.com (Joel B Levin) (10/06/88)

In article <438@husc6.harvard.edu> hellerst@husc4.UUCP (Joe Hellerstein) writes:
|I've noticed a bizarre problem with my Mac Plus recently.  When I hit the
|interrupt on the programmer's switch, I don't get thrown into the
|debugger box.  The mouse and keyboard seem to freeze up.  . . .

This comes up infrequently enough that I forgot about it when it
happened to me a few months ago.

Unplug your modem or whatever from your serial port.  That should fix
it.

	/JBL


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