From owner-cvs-all  Sun Dec  5 22:59:13 1999
Delivered-To: cvs-all@freebsd.org
Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21])
	by hub.freebsd.org (Postfix) with ESMTP
	id 8128F14DEE; Sun,  5 Dec 1999 22:59:11 -0800 (PST)
	(envelope-from peter@FreeBSD.org)
Received: (from peter@localhost)
	by freefall.freebsd.org (8.9.3/8.9.2) id WAA73586;
	Sun, 5 Dec 1999 22:59:11 -0800 (PST)
	(envelope-from peter@FreeBSD.org)
Message-Id: <199912060659.WAA73586@freefall.freebsd.org>
From: Peter Wemm <peter@FreeBSD.org>
Date: Sun, 5 Dec 1999 22:59:11 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/isa fd.c
Sender: owner-cvs-all@FreeBSD.ORG
Precedence: bulk

peter       1999/12/05 22:59:11 PST

  Modified files:
    sys/isa              fd.c 
  Log:
  Add a truely evil workaround (hack!) for some unfortunate BIOS
  programming practices.  It seems that newer fdc chips have an
  alternative way of setting the transfer speed (including high speed
  modes for floppy tape) that doesn't use the control register (which
  we don't support - we use the old way only).  So, they (the BIOS
  programmers) sometimes leave out the 0x3f6 control register from
  the PnP ports descriptor(!!).  "Hey, it works with windows, so
  what's the problem?" :-(  Anyway, this hack tries to compensate
  for that.  This was discussed with dfr (who did the pnp attachment).
  
  Revision  Changes    Path
  1.170     +24 -7     src/sys/isa/fd.c



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message