From owner-freebsd-hackers Tue Jul 9 14:37:41 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id OAA09713 for hackers-outgoing; Tue, 9 Jul 1996 14:37:41 -0700 (PDT) Received: from eldorado.net-tel.co.uk (eldorado.net-tel.co.uk [193.122.171.253]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id OAA09705 for ; Tue, 9 Jul 1996 14:37:33 -0700 (PDT) From: Andrew.Gordon@net-tel.co.uk Received: (from root@localhost) by eldorado.net-tel.co.uk (8.6.12/8.6.10) id WAA20573; Tue, 9 Jul 1996 22:36:10 +0100 Received: from "/PRMD=NET-TEL/ADMD=GOLD 400/C=GB/" by net-tel.co.uk (Route400-RFCGate); Tue, 9 Jul 96 22:34:20 +0100 X400-Received: by mta "eldorado" in "/PRMD=net-tel/ADMD=gold 400/C=gb/"; Relayed; Tue, 9 Jul 96 22:34:20 +0100 X400-Received: by mta "net-tel cambridge" in "/PRMD=net-tel/ADMD=gold 400/C=gb/"; Relayed; Tue, 9 Jul 96 21:34:18 +0000 X400-Received: by "/PRMD=NET-TEL/ADMD=Gold 400/C=GB/"; Relayed; Tue, 9 Jul 96 21:34:18 +0000 X400-MTS-Identifier: ["/PRMD=NET-TEL/ADMD=Gold 400/C=GB/";hst:4758-960709213418-7ACA] X400-Content-Type: P2-1984 (2) X400-Originator: Andrew.Gordon@net-tel.co.uk Original-Encoded-Information-Types: IA5-Text X400-Recipients: non-disclosure:; Date: Tue, 9 Jul 96 21:34:18 +0000 X400-Content-Identifier: Re(2): Fwd: Para Message-Id: <"16130-960709213648-4669*/G=Andrew/S=Gordon/O=NET-TEL Computer Systems Ltd/PRMD=NET-TEL/ADMD=Gold 400/C=GB/"@MHS> To: Narviel.Beyer" "@net-tel.co.uk Cc: hackers@freebsd.org In-Reply-To: Subject: Re(2): [Fwd: Parallel laplink abuse leads to death of kernel secondary timer] Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > Is there a way of getting information (and enough information to > for programming) on the new (ECP and also EPP ?) parallel port > modes? Also, is anyone actually working with the lpt driver to > allow bidirectional? I have been collecting info on this subject, but am unlikely to actually work on it in the near future. There is some info on the bidirectional modes at http://www.fapo.com/, though this is mostly about what it looks like from outside the PC, rather than programming information. Also somwhere on the web I found datasheets on some NatSemi chips that implement the various parallel port modes. Finally, the only complete documentation on how to program ECP mode (including how to probe for what sort of ports you have got) seems to be in the Microsoft Developer Network - I couldn't find it on the Microsoft web site, but it is on the MSDN CDs.