From: sandmann AT clio DOT rice DOT edu (Charles Sandmann)
Message-Id: <9808031840.AA13257@clio.rice.edu>
Subject: Re: info core dumps
To: ams AT ludd DOT luth DOT se (Martin Str|mberg)
Date: Mon, 3 Aug 1998 13:40:58 -0600 (CDT)
Cc: eliz AT is DOT elta DOT co DOT il, djgpp-workers AT delorie DOT com
In-Reply-To: <199807281847.UAA20756@father.ludd.luth.se> from "Martin Str|mberg" at Jul 28, 98 08:47:30 pm
Content-Type: text
Precedence: bulk

> QEMM, CWSDPMI, DJGPP v202: works fine:
> es = 0xffff; bp = 0xb4f2; font_seg = 0x2634; src = 0x10b4e2; dest = 0x26340.
> 
> No EMM386, DISPLAY.SYS, DJGPP v202: works fine:
> es = 0xffff; bp = 0xbf32; font_seg = 0x5634; src = 0x10bf22; dest = 0x56340.
> 
> EMM386, DISPLAY.SYS, DJGPP v202: crashes:
> es = 0xffff; bp = 0xbf32; font_seg = 0x2e34; src = 0x10bf22; dest = 0x2e340.
> Exiting due to signal SIGSEGV
> Page fault at eip=00001e67, error=0005

There is a bug in this version of EMM386 which does not map the HMA into the
page tables.  Using QEMM as the EMM provider, or using no EMM provider both
work fine.  Since EMM386 is broken, it should be replaced by a different 
version or with QEMM.