From:	James MacDonald <trill AT Xnetbook DOT demon DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Low level stuff w/DJGPP (floppy drive blitzing, etc)
Date:	Fri, 4 Jul 1997 16:23:35 +0100
Organization:	Trills and Technologies
Distribution:	world
Message-ID:	<ebvVSBA3VRvzEw$b@netbook.demon.co.uk>
NNTP-Posting-Host:	netbook.demon.co.uk
MIME-Version:	1.0
Lines:	21
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

In an application I'm writing, I need to be able to turn off the floppy
drive so that when the program exits it is disabled. The program loads
on startup, waits for a keypress within 3 seconds with kbhit(), and then
if a key is pressed requests a password. If no key is pressed or the
password is incorrect, the floppy drive should be disabled and the
program should exit. If the password is correct the program should
simply exit.

I have looked at several Virus Toolkits to see how they do it, and I
have found no examples. However, then can erase LPT1 by overwriting its
address in memory. Is this possible for the floppy, and how is it done?

This is *not* a virus or malicious code. And although I have TASM I want
to stay in C. Any suggestions?

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