Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!sun!imagen!qmsseq!pipkins
From: pipkins@qmsseq.imagen.com (Jeff Pipkins)
Newsgroups: comp.sys.ibm.pc
Subject: Re: System boot
Keywords: system boot
Message-ID: <77@qmsseq.imagen.com>
Date: 8 Jan 90 16:27:25 GMT
References: <945@excelan.COM>
Reply-To: pipkins@qmsseq.UUCP (Jeff Pipkins)
Organization: QMS Inc., Mobile, Alabama
Lines: 8

The int 19h vector is supposed to do a warm boot.  Like you, I have 
experienced frequent hang-ups instead of boots when calling it.  I'm
not sure why, either.

To synthesize a cold boot, just jump to location FFFF:0000.  The 8086
initializes its CS to FFFF and its IP to 0.

This might work:>   echo g =FFFF:0000 | debug