From owner-freebsd-drivers@FreeBSD.ORG Wed Feb 27 22:14:51 2013 Return-Path: Delivered-To: freebsd-drivers@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id EC36721D for ; Wed, 27 Feb 2013 22:14:51 +0000 (UTC) (envelope-from star_one_2k@hotmail.com) Received: from blu0-omc1-s18.blu0.hotmail.com (blu0-omc1-s18.blu0.hotmail.com [65.55.116.29]) by mx1.freebsd.org (Postfix) with ESMTP id B30BD676 for ; Wed, 27 Feb 2013 22:14:51 +0000 (UTC) Received: from BLU167-W49 ([65.55.116.8]) by blu0-omc1-s18.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 27 Feb 2013 14:14:45 -0800 X-EIP: [23b7mAnybHggKggyLxh+8gzYxGwd5Iwk] X-Originating-Email: [star_one_2k@hotmail.com] Message-ID: From: david hodges To: , Subject: ISA device driver and IRQs Date: Wed, 27 Feb 2013 22:14:45 +0000 Importance: Normal In-Reply-To: <033249A9-9C77-426F-BCA2-3A22CC4F9391@cyclaero.com> References: , <033249A9-9C77-426F-BCA2-3A22CC4F9391@cyclaero.com> MIME-Version: 1.0 X-OriginalArrivalTime: 27 Feb 2013 22:14:45.0552 (UTC) FILETIME=[D96D3300:01CE1537] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2013 22:14:52 -0000 I need to write a simple device driver for the ISA bus that uses one IRQ an= d a few reads and writes to I/O Ports 0x300 +. I don't know even where to s= tart with FreeBSD. I've done drivers before in other OS systems and have a = book for Linux but FreeBSD seems MUCH differnt. Are there any examples I ca= n get? I thought about modifying the serial driver but I'm not een sure if= that's a good idea. Any help would be great. ThanksDave =