Path: utzoo!utgpu!attcan!uunet!mcvax!kunivv1!hobbit!ge
From: ge@hobbit.sci.kun.nl (Ge' Weijers)
Newsgroups: comp.sys.atari.st
Subject: Re: How not to boot from your hard disk.
Message-ID: <301@hobbit.sci.kun.nl>
Date: 26 Jul 88 15:49:37 GMT
References: <489@laura.UUCP>
Organization: University of Nijmegen, The Netherlands.
Lines: 13

From article <489@laura.UUCP>, by klute%trillian.irb@unido.uucp (Rainer Klute):
> In article <1094@atari.UUCP> apratt@atari.UUCP (Allan Pratt) writes:
>>* COLD cold boot code: copy a bit of code to $8, then jump to it.	*
>>* The bit of code clears RAM starting from its own end, until it	*
>>* gets a bus error.  Then it jumps to the start of the ROM.		*
> 
> Why not simply set memvalid (0x0420) to zero and jump through 0x0004?
> 
A virus conceivably might restore memvalid directly after the reset (or can
it? I'd have to check it with a disassembler)
-- 
Ge' Weijers, Informatics dept., Nijmegen University, the Netherlands
UUCP: {uunet!,}mcvax!kunivv1!hobbit!ge