Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S275364AbTHNSu7 (ORCPT ); Thu, 14 Aug 2003 14:50:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S275360AbTHNSu6 (ORCPT ); Thu, 14 Aug 2003 14:50:58 -0400 Received: from pix-525-pool.redhat.com ([66.187.233.200]:22112 "EHLO lacrosse.corp.redhat.com") by vger.kernel.org with ESMTP id S275364AbTHNSul (ORCPT ); Thu, 14 Aug 2003 14:50:41 -0400 Date: Thu, 14 Aug 2003 19:50:03 +0100 From: Dave Jones To: dleonard@dleonard.net Cc: Mark Watts , linux-kernel@vger.kernel.org Subject: Re: Via KT400 agpgart issues Message-ID: <20030814185003.GC10901@redhat.com> Mail-Followup-To: Dave Jones , dleonard@dleonard.net, Mark Watts , linux-kernel@vger.kernel.org References: <200308141025.12747.m.watts@eris.qinetiq.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 777 Lines: 19 On Thu, Aug 14, 2003 at 11:53:02AM -0700, dleonard@dleonard.net wrote: > For my geforce3 and geforce4 I didn't notice anything odd about using the > KT400 chipset in spite of agpgart not fully supporting it. KT400 has two modes of operation. If you have an AGP 2.x graphics card, the registers are in the same place they are on earlier VIA chipsets. If you plug in an AGP 3.x card, you have to read from alternative registers, and some of the legacy ones change meaning. Dave -- Dave Jones http://www.codemonkey.org.uk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/