From PICLIST@MITVMA.MIT.EDU Thu Nov 14 11:21:12 2002 Received: from cherry.ease.lsoft.com [209.119.0.109] by dpmail10.doteasy.com with ESMTP (SMTPD32-7.13) id A7A8106E008A; Thu, 14 Nov 2002 11:21:12 -0800 Received: from PEAR.EASE.LSOFT.COM (209.119.0.19) by cherry.ease.lsoft.com (LSMTP for Digital Unix v1.1b) with SMTP id <9.007D8716@cherry.ease.lsoft.com>; Thu, 14 Nov 2002 14:07:18 -0500 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8d) with spool id 9599 for PICLIST@MITVMA.MIT.EDU; Thu, 14 Nov 2002 14:07:09 -0500 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 7228; Thu, 14 Nov 2002 14:04:40 -0500 Received: from *unknown [64.69.111.211] by mitvma.mit.edu (IBM VM SMTP Level 320) via TCP with ESMTP ; Thu, 14 Nov 2002 14:04:39 EST X-Warning: mitvma.mit.edu: Host *unknown claimed to be imtrant1.imtra.com Received: from maxengineering1 ([192.168.1.9]) by imtrant1.imtra.com with Microsoft SMTPSVC(5.0.2195.4905); Thu, 14 Nov 2002 14:03:59 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 X-OriginalArrivalTime: 14 Nov 2002 19:03:59.0265 (UTC) FILETIME=[9687E910:01C28C10] Message-ID: Date: Thu, 14 Nov 2002 14:03:57 -0500 Reply-To: pic microcontroller discussion list Sender: pic microcontroller discussion list From: Paul Hutchinson Subject: Re: [PIC}:Project Idea To: PICLIST@MITVMA.MIT.EDU In-Reply-To: <04D03E2DF8BDBA4A8439617C9FFF092308E027@crystal-ex.crystalengineering.net> X-RCPT-TO: Status: R X-UIDL: 277600486 X-Evolution-Source: pop://mailinglist%40farcite.net@mail.farcite.net/ X-Evolution: 000006cb-0000 These guys make PCI POST boards http://www.uxd.com/products.html If you can get your hands on one, maybe you can figure out how to make a PIC based version. Paul > -----Original Message----- > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Matt Heck > Sent: Thursday, November 14, 2002 1:51 PM > Subject: Re: [PIC}:Project Idea > > ...and the reason for that is that the old BIOS POST codes you remember > got dumped to the ISA bus, not PCI. They were quite easy to decode-- a > couple of octal latches, some 7-segment LEDs, and a fifty-dollar markup > are what I remember being typical. A handful of modern motherboards > have some surface-mount LEDs near the chipset to dump out POST > progress. > > The problem dumping data to PCI, if memory serves-- and it may not-- is > that you need to have a target vendorID:productID to send the > information onto the bus; ISA was more of a "broadcast" idea (you can > actually switch the traffic on PCI, though this only happens on MBs with > lots of slots or extra bridges). > > If you CAN build a product like you describe, it's a great idea, and the > best way to figure out if it's going to work is probably going to be to > get a PCI bus-traffic analyzer and see what you get when you boot up. > > Of course, starting with the documentation may be slightly cheaper. =] > > Cheers, > Matt > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics