From owner-freebsd-hackers Sun Feb 18 02:52:12 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id CAA08247 for hackers-outgoing; Sun, 18 Feb 1996 02:52:12 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id CAA08242 for ; Sun, 18 Feb 1996 02:52:08 -0800 (PST) Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id LAA16368; Sun, 18 Feb 1996 11:51:41 +0100 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id LAA03560; Sun, 18 Feb 1996 11:51:41 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.7.3/8.6.9) id LAA06216; Sun, 18 Feb 1996 11:20:20 +0100 (MET) From: J Wunsch Message-Id: <199602181020.LAA06216@uriah.heep.sax.de> Subject: Re: Quick question on syscons.c To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Sun, 18 Feb 1996 11:20:19 +0100 (MET) Cc: imp@village.org Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199602180527.QAA27533@godzilla.zeta.org.au> from "Bruce Evans" at Feb 18, 96 04:27:33 pm X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL24 ME8a] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org Precedence: bulk As Bruce Evans wrote: > >Can anybody comment on these differences and/or point me at a good and > >readily availble reference? Is there a good reference for all the > >"esoteric" PC things: DMA, Timer chips, interrupts, etc? > > I haven't seen one :-(. The standard response is always: Frank van Gilluwe: The Undocumented PC. Addison-Wesley 1993 ISBN 0-201-62277-7 Not that he's got everything right (for example, his argumentation about the head load and head unload scenario of the floppies is completely bogus, given that all "mini" and "micro" floppy drives load the head as soon as the floppy is inserted/locked), but it is in impressive collection of facts. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)