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From: j@bonnie.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Suggestion for 2.1
Date: 23 Jun 1995 08:42:12 +0200
Organization: Private U**x site, Dresden.
Lines: 25
Message-ID: <3sdno4$5ud@bonnie.tcd-dresden.de>
References: <3r7888$280@germany.eu.net> <3s8qj7$meh@bonnie.tcd-dresden.de> <3saqif$lrc@news.bu.edu> <3sbpd2$1s3@clarknet.clark.net>
Reply-To: joerg_wunsch@uriah.heep.sax.de
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Robert Watson <rwatson@clark.net> wrote:
>Acually -- it is possible to tell if the disk has been removed/change d--
>I believe Microsoft (Symantec?) used it in MS BAckup -- the drive light
>stays on and backup can tell when you've put the new disk in. Of course,
>they run a compatibility test firstt that apparently fails on some
>machines.. And having the drive light always on is disconcerting in
>terms of the purpose of a drive light -- telling when yuo shoudn't remove
>the disk ;). That's one features I've always liked about macs (and
>non-caddy CD-ROMs) -- the ability to detect a disk insert/eject.
If IBM wouldn't have been so brain^H^H^H^Hglorious to drop the READY
line from the floppy bus, the FDC had issued an interrupt on a READY
CHANGE condition (i.e., after the floppy has been inserted, locked,
and spun up). With the current hardware, all you can do is contin-
uously issue a READ ID command and see if the floppy controller (that
will not anticipate a drive being not ready while its READY signal is
asserted) will eventually time out.
Nope, with our broken floppy hardware, there's no chance.
--
cheers, J"org private: joerg_wunsch@uriah.heep.sax.de
http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)