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From: olson@harvard.UUCP (Eric Olson)
Newsgroups: net.micro.mac
Subject: Re: MacDB & Mac+
Message-ID: <760@harvard.UUCP>
Date: Thu, 6-Mar-86 12:49:42 EST
Article-I.D.: harvard.760
Posted: Thu Mar  6 12:49:42 1986
Date-Received: Sat, 8-Mar-86 21:34:48 EST
References: <4368@ut-sally.UUCP>
Reply-To: olson@harvard.UUCP (Eric olson)
Organization: Aiken Comp Lab, Harvard
Lines: 23
Keywords: two mac debugger

In article <4368@ut-sally.UUCP> brian@ut-sally.UUCP (Brian H. Powell) writes:
>
>     Does anyone know if MacDB (the two mac debugger) works with the
>MacPlus?

I have used MacDB and MacNub on a Mac+.  Here are my observations:
	- Under HFS MacDB cannot find a .MAP file on an MFS floppy
	(i.e., I copied the Map file onto a Mac 512 disk and then asked
	MacDB [running on the Mac+] to read it.  It couldn't.  Copying
	it to my HD20 made it readable)
	- When debugging a Mac+ (i.e., Nub running on Mac+ and DB running
	on Mac 512K), if you stop the Mac+ via the NMI button in the
	upper 64K of ROM, you will crash either then or later.
	(It takes a few tries to [just by chance] get a stop that isn't
	in the top 64K, and then if you don't use NMI anymore you're OK.
	If you know a way to avoid syncing up the DB and the Nub other
	than NMI, that might work too.)

Other than that, it seems OK.  Of course, HFS traps aren't recognized, etc.
Consulair might be coming out with a new version of the debugger; I don't
know.  Maybe Apple will actually market it.

-Eric