From owner-freebsd-hackers Thu Dec 26 08:52:29 1996 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id IAA27202 for hackers-outgoing; Thu, 26 Dec 1996 08:52:29 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.8.4/8.8.4) with SMTP id IAA27187 for ; Thu, 26 Dec 1996 08:52:25 -0800 (PST) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id RAA14072; Thu, 26 Dec 1996 17:50:59 +0100 Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id RAA13335; Thu, 26 Dec 1996 17:50:58 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.4/8.6.9) id RAA09725; Thu, 26 Dec 1996 17:31:13 +0100 (MET) From: J Wunsch Message-Id: <199612261631.RAA09725@uriah.heep.sax.de> Subject: Re: Help with sb To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Thu, 26 Dec 1996 17:31:12 +0100 (MET) Cc: peter@clari.net.au (Peter Hawkins) Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: from Peter Hawkins at "Dec 27, 96 02:54:04 am" X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E X-Mailer: ELM [version 2.4ME+ PL17 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Peter Hawkins wrote: > For the record, it seems that dos does not use the printer's irq properly > hence it is possible to steal irq 7 (according to those who helped me). DOS uses polled printing. I'm not sure about Windows versions, i assume at least NT will also use interrupt-driven printing if possible. -- 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. ;-)