info-mac@uw-beaver (info-mac) (07/11/84)
From: Peterr%toronto.csnet@csnet-relay.arpa I was playing with MS-BASIC on a Lisa running MacWorks and popped up the calculator. It appeared, and then I was immediately deposited into the machine-level monitor; it printed a dump of the registers, etc. I haven't tried to replicate the bug-- I'll do that later-- but I wonder if there's a PC value that one can restart the machine at (via the "g" command) to reboot. Having to unplug the machine and power it up again is not only a pain (one has to reset the clock, for example (Lisa has no battery)) but makes me uneasy. Any hints will be gratefully accepted... thanks, p. rowley, U. Toronto
info-mac@uw-beaver (info-mac) (07/11/84)
From: Ralph W. Hyre Jr. <RALPHW@MIT-XX.ARPA> If you've ever used the Pascal Workshop, you will find that the '-' key on the numeric keypad is still bound to the NMI key (which immediately takes you into the debugger. The Office System software doesn't rebind it. Rebooting the machine rebinds it, but exiting the Workshop to the environments window and going to the Office System doesn't. Macworks may do something similar as far as key bindings. Anyway, if you entered you entering the debugger by pressing the NMI key, you should be able to reenter the system by simply entering 'g' with no value. - Ralph Hyre -------
info-mac@uw-beaver (info-mac) (07/11/84)
From: ERice@HIS-PHOENIX-MULTICS.ARPA As Ralph noted, and also... There is a debugger command, UBR (User BReak) which sometimes will pop you nicely back, and also breaks out of infinite loops in programs which do not honor interrupts directly. Short of powering down (and we all like to avoid that), there is an interrupt button on the back of the Lisa, it's next to the "video out" plug, and will zap the Lisa even when it's ignoring the power-off button. Edward Rice