From owner-freebsd-hackers Thu Sep 14 03:10:42 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id DAA03345 for hackers-outgoing; Thu, 14 Sep 1995 03:10:42 -0700 Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id DAA03339 for ; Thu, 14 Sep 1995 03:10:38 -0700 Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id LAA00211; Thu, 14 Sep 1995 11:59:01 +0200 From: Luigi Rizzo Message-Id: <199509140959.LAA00211@labinfo.iet.unipi.it> Subject: Re: EPP/ECP parallel port modes ? To: phk@critter.tfs.com (Poul-Henning Kamp) Date: Thu, 14 Sep 1995 11:59:00 +0200 (MET DST) Cc: joachim@ee.uni-sb.de, hackers@FreeBSD.ORG In-Reply-To: <869.811067623@critter.tfs.com> from "Poul-Henning Kamp" at Sep 14, 95 01:33:24 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 1147 Sender: hackers-owner@FreeBSD.ORG Precedence: bulk > > I've written an IEEE1284 device driver, which implements parallel port > > fifo mode, nibble and byte reverse mode, but not yet EPP,ECP because of > > lacking peripherals supporting these, but the hooks are there. > > What we really should look at is a faster TCP/IP on the parallel port... It is not only that, actually. A bidir. port with possibly exposed interrupt and other bus lines would allow hardware types to connect a variety of home-built devices and write drivers for them. An example: there are very cheap (US$10) flash AD converter which can be used to sample video signals. They work reasonably with a sample rate of 1MB/s or more. I have done this on a spare IDE card, but the parallel port connector is way easier to use. Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================