IBM PC Debugging Help

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Article #19258

#19258

From: David Ambrose
Date: Fri, 17 Jun 1988 16:56

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	Does anyone out there have schematics for a debugging 
board for the IBM PC?  I know that the Atron card and the IBM
Proffesional Debugging Board can assert the NMI line to invoke Symdeb.
I would like to duplicate this facility for myself.

	I have tied a debounced pushbutton to the  -iocheck line on the
backplane,  but it has no effect.  Are there any timing restrictions to
this?  

	Any additional information would be greatly appreciated.



-- 
-------					        Computing is a human activity.
David L. Ambrose, --  Digital Research, Inc         ...!amdahl!drivax!dambrose
SPECIFIC DENIAL: Don't blame DRI.  They wouldn't approve of this anyway. r}ix
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!lll-tis!ames!amdahl!drivax!dambrose
From: dambrose@drivax.UUCP (David Ambrose)
Newsgroups: sci.electronics,comp.sys.ibm.pc
Subject: IBM PC Debugging Help
Message-ID: <3510@drivax.UUCP>
Date: 17 Jun 88 16:56:28 GMT
Reply-To: dambrose@drivax.UUCP (David Ambrose)
Distribution: na
Organization: Monterey Computer Graphics Monastary
Lines: 19