Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262569AbUJ0TJn (ORCPT ); Wed, 27 Oct 2004 15:09:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262577AbUJ0TIl (ORCPT ); Wed, 27 Oct 2004 15:08:41 -0400 Received: from alog0319.analogic.com ([208.224.222.95]:2688 "EHLO chaos.analogic.com") by vger.kernel.org with ESMTP id S262597AbUJ0THe (ORCPT ); Wed, 27 Oct 2004 15:07:34 -0400 Date: Wed, 27 Oct 2004 15:04:22 -0400 (EDT) From: linux-os Reply-To: linux-os@analogic.com To: Daniel Phillips cc: Timothy Miller , Jeff Garzik , Linux Kernel Mailing List Subject: Re: Some discussion points open source friendly graphics [was: HARDWARE: Open-Source-Friendly Graphics Cards -- Viable?] In-Reply-To: <200410271423.33380.phillips@istop.com> Message-ID: References: <417D21C8.30709@techsource.com> <417D6365.3020609@pobox.com> <417D8218.9080700@techsource.com> <200410271423.33380.phillips@istop.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1208 Lines: 31 On Wed, 27 Oct 2004, Daniel Phillips wrote: > On Monday 25 October 2004 18:45, Timothy Miller wrote: >> My intention is to include a bit of logic in the FPGA which can be used >> to reprogram the prom. You would then cycle power to get the FPGA to >> load the new code. > > Power cycle the whole machine, or software-reset the card? > > Regards, > > Daniel The FPGA requires a physical reset-pin toggle to load new bits into the gate-array. This could be software-toggled, but that would require at least one external gate. This is because the power-reset needs to reset the chip before its bits are loaded plus some pin, after loading, needs to be an output to its reset pin also. Therefore, you need the external gate that is always present. Cheers, Dick Johnson Penguin : Linux version 2.6.9 on an i686 machine (5537.79 BogoMips). Notice : All mail here is now cached and reviewed by John Ashcroft. 98.36% of all statistics are fiction. - 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/