Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!pacbell.com!pacbell!barn!everexn!mike
From: mike@everexn.uucp (Mike Higgins)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Using Int 19h?
Message-ID: <1990Jul6.031331.13561@everexn.uucp>
Date: 6 Jul 90 03:13:31 GMT
References: <90184.155514J0S@psuvm.psu.edu> <1990Jul3.221200.3894@kth.se>
Organization: Everex Systems, Inc.
Lines: 31

In <1990Jul3.221200.3894@kth.se> palm@admin.kth.se (Christer Palm) writes:

>In article <90184.155514J0S@psuvm.psu.edu> J0S@psuvm.psu.edu writes:
>>I'd like to use Int 19h to perform a quick reboot of DOS to establish
  J0S@psuvm.psu.edu replies:
>Try this It will Reboot your system 
>Use debug

>-n reboot.com
>-a 100
>mow ax,0040
>push ax
>pop es
>es:
>mov word ptr [0072], 1234
>jmp ffff:0000
>-rcx
>11
>w
>q
	I have used this trick sucessfully for years, but it stopped working
when I moved up to a 386.  I've tried reboot.com on many AT's and find that
it doesn't work on some, does on others.  Never works on my Everex Step/20.
I'd be VERY interested in a version that does work on newer 386's.  By the
way, reboot.com does 'work' on my system, but the 1234 flag in the BIOS RAM
area no longer supresses a memory test, it's just a lot slower than it used
to be!
	I investigated using int 19h instead, and discovered that it is
useless!  It requires that you remove all of your TSR's, EMS drivers, 
mouse drivers, etc. before you call int19h!  That's probably why the original
poster had his system crash.