X-Authentication-Warning: delorie.com: mailnull set sender to djgpp-bounces using -f
From: "Joel Saunders" <jbs30000 AT aol DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Has anybody successfully hooked int 0DH?
Date: Mon, 4 Mar 2002 04:45:18 +0000 (UTC)
Organization: Mailgate.ORG Server - http://www.Mailgate.ORG
Lines: 22
Message-ID: <0ba46b640f6dae4cc41710afe21bfe4e.62691@mygate.mailgate.org>
References: <b787def1cb4c7fd971ae21aba5a6634f DOT 62691 AT mygate DOT mailgate DOT org> <3c82e2f7 DOT sandmann AT clio DOT rice DOT edu>
NNTP-Posting-Host: spider-ntc-tb082.proxy.aol.com
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: news.mailgate.org 1015190919 16725 198.81.16.187 (Mon Mar  4 05:45:17 2002)
X-Complaints-To: abuse AT mailgate DOT org
NNTP-Posting-Date: Mon, 4 Mar 2002 04:45:18 +0000 (UTC)
Injector-Info: news.mailgate.org; posting-host=spider-ntc-tb082.proxy.aol.com; posting-account=62691; posting-date=1015190919
User-Agent: Mailgate Web Server
X-URL: http://mygate.mailgate.org/mynews/comp/comp.os.msdos.djgpp/0ba46b640f6dae4cc41710afe21bfe4e.62691%40mygate.mailgate.org
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

In real mode, GPF's happen if, and here's a cut and past from Ralph
Brown's interrupt list:
Notes:  called in real mode when
            an instruction accesses a memory operand extending beyond
offset
              FFFFh (i.e. WORD at FFFFh or DWORD at FFFDh or higher) in
segment
              CS, DS, ES, FG, or GS
            a PUSH MEM or POP MEM instruction contains an invalid bit
encoding
              in the second byte
            an instruction exceeds the maximum length allowed (10 bytes
for
              80286, 15 bytes for 80386/80486)
            an instruction wraps from offset FFFFh to offset 0000h

So I just want to be able to intercept the interrupt and use my own
exception handler.


-- 
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG