386 Protected Mode debugging

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Article #1681

#1681

From: Daniela Papa
Date: Tue, 10 Nov 1987 15:47

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Hi networld

Has anybody debugged a 386 in protected mode without an ICE? I'm trying :-(
to run a copy of DOS as a protected V86 task: my tools are MASM5.0 and 
CODEVIEW which won't work in protected mode. I wrote a small driver
to send messages out of the serial port ;-) my machine is AT compatible.
I can't understand why as soon as the cpu does an lgdt [_gdtr] the 
whole thing hangs, it is still in real mode. By the way CV doesn't
disassable correctly protected mode instructions even if I enable the 386
option.HELP HELP HELP my boss will shoot my without the last cigarette
if I can't show him a demo :-))  Thanks

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!hao!ames!oliveb!icoven!ilcu
From: ilcu@icoven.olivetti.com (Daniela Papa)
Newsgroups: comp.sys.intel
Subject: 386 Protected Mode debugging
Message-ID: <8640@oliveb.UUCP>
Date: Tue, 10-Nov-87 10:47:03 EST
Article-I.D.: oliveb.8640
Posted: Tue Nov 10 10:47:03 1987
Date-Received: Thu, 12-Nov-87 23:25:44 EST
Sender: news@oliveb.UUCP
Reply-To: ilcu@icoven.UUCP (Daniela Papa)
Organization: Olivetti ATC; Cupertino, Ca
Lines: 14