From owner-freebsd-hackers Thu Dec 26 10:22:04 1996 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id KAA01394 for hackers-outgoing; Thu, 26 Dec 1996 10:22:04 -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 KAA01386 for ; Thu, 26 Dec 1996 10:22:01 -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 TAA22188; Thu, 26 Dec 1996 19:21:10 +0100 Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id TAA16071; Thu, 26 Dec 1996 19:21:10 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.4/8.6.9) id TAA02654; Thu, 26 Dec 1996 19:01:40 +0100 (MET) From: J Wunsch Message-Id: <199612261801.TAA02654@uriah.heep.sax.de> Subject: Re: Help with sb To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Thu, 26 Dec 1996 19:01:39 +0100 (MET) Cc: peter@clari.net.au Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199612261735.EAA24737@godzilla.zeta.org.au> from Bruce Evans at "Dec 27, 96 04:35:19 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 Bruce Evans wrote: > >It will burn many CPU cycles in tight loops then. > > The driver was so braindamaged that this was required for many printers > with working interrupts anyway. Joerg improved the driver, but it's not > clear if the polling code is still useful since no one complains about > working code :-). Well, now that you mention it, indeed, it's been me... I almost forgot about this. :-) But you're right, it's quite possible that it works in interrupt mode now for all printers that generated the ACK signal at all (and for all cables that properly wire it, of course). -- 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. ;-)