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From: zarifes@bnrmtv.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: Code to perform warm reboot.
Message-ID: <1442@bnrmtv.UUCP>
Date: Fri, 20-Feb-87 21:24:50 EST
Article-I.D.: bnrmtv.1442
Posted: Fri Feb 20 21:24:50 1987
Date-Received: Sat, 21-Feb-87 19:48:21 EST
References: <3258@j.cc.purdue.edu> <424@omepd> <1441@bnrmtv.UUCP>
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> > In article <3258@j.cc.purdue.edu> tim@j.cc.purdue.edu (Timothy Lange) writes:
> > >The following is Macro code to make an IBM PC and true compatibles
> > >perform a warm reboot.
> > > [...showing a simple assembler program to jump to F000:FFF0...]
>  
> There is a problem with this.  EVERY time I do an int 19h on my True Blue 
> IBM AT,  the A: drive is spun and the system hangs completely.
> 
> I recommend that you do not ever use int 19h.
 
I almost forgot,  the best way to do a warm reboot is to move the value 1234H
into the location 0040:0072 and THEN jump to F000:FFF0

You'll find that this works on clones, AT's, PC's and about everything else.

-- 

{hplabs,amdahl,3comvax}!bnrmtv!zarifes          --Ken Zarifes