From:	Charles Sandmann <sandmann AT praline DOT no DOT NeoSoft DOT com>
Subject:	Re: djgpp up and running on ps/2 microchannel
To:	UCKO AT VAX1 DOT ROCKHURST DOT EDU (Aaron Ucko)
Date:	Sat, 4 Mar 1995 19:30:27 -0600 (CST)
Cc:	ah230 AT leo DOT nmc DOT edu, djgpp AT sun DOT soe DOT clarkson DOT edu

> >	DJGPP would not run with emm386.exe.  I had read about this 
> >before on this newsgroup, but I had also read about others who had used 
> >this device driver in their config.sys file.  Perhaps they had a 
> >different version of DOS.  I am using dos5.00.  I noticed that there were 
> >some memory management problems on dos corrective disks.  DOS6.00 is 
> >supposed to have a much improved memory manager.  Perhaps it just corrects 
> >bugs in dos5.00.
> 
> DJGPP doesn't like DOS 5's EMM386.Exe if it's used to provide UMBs but no
> pseudo-EMS (because the computer has to be in V86 mode to provide UMBs,
> but EMM386 only provides VCPI [which DJGPP would need to get into straight
> protected mode from V86 mode] when it provides EMS).  

Actually, GO32 is supposed to handle all of these cases (I tested it at
one time with MSDOS 5, PCDOS 5, COMPAQ DOS 5) but that was long ago.  If
someone knows of a case with EMM386 (and some parameters) which does not
work properly, I would like a private message with the specific 
config.sys contents, DOS version (including OEM type, etc).  I know how
to fix it, just send me the info, and it will be handled OK in V2
(or documented as something to avoid).

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