Xref: utzoo comp.sys.ibm.pc:26213 comp.sources.wanted:6724
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!apple!vsi1!v7fs1!mvp
From: mvp@v7fs1.UUCP (Mike Van Pelt)
Newsgroups: comp.sys.ibm.pc,comp.sources.wanted
Subject: Re: Is it possible to re-boot a PC from a program ?
Keywords: reboot.exe
Message-ID: <276@v7fs1.UUCP>
Date: 17 Mar 89 01:57:00 GMT
References: <830@psueea.UUCP>
Reply-To: mvp@v7fs1.UUCP (Mike Van Pelt)
Distribution: na
Organization: Video7, Cupertino, CA
Lines: 26

Other people have mentioned that you just jump to FFFF:0.  The other
trick is location 0:0472.  If you store hex 1234 into that word
location, you will get a warm boot.  If you store anything else 
there, you will get a cold boot.

Quickie Debug script:  (Real hackers don't use MASM!)

    debug
    a 100
    push ds
    mov ax,0
    mov ds,ax
    mov ax,1234  (make this zero or something for cold boot.)
    mov [0472],ax
    pop ds
    jmp ffff:0
    
    nreboot.com
    r cx
    12
    w
    
-- 
I would like to electrocute everyone who uses the    | Mike Van Pelt
word 'fair' in connection with income tax policies.  | Video 7
           -- William F. Buckley                     | ...ames!vsi1!v7fs1!mvp