clements@bbn.com (Bob Clements) (07/10/90)
A while ago (and every few months, I guess) the question came up of what are the timing specs for the PC/AT bus. The answer, as always, was that there is no published spec for the timing, though the signal line definitions are published in the AT technical reference. But someone said there is a pretty good book on the subject. I didn't jot down the info. Would someone please repost or mail me that info? Title, author, publisher, ISBN... Something along the lines of "Interfacing to the IBM PC/AT". Thanks, Bob Clements, K1BC, clements@bbn.com
grege@gold.GVG.TEK.COM (Greg Ebert) (07/11/90)
IEEE spec P996 attempted to reduce the entropy of AT designs. The spec I have is dated 4/28/87. The names on it are: Mike Fung (408) 434-0600 (Chips & Technologies) Scott Hopkinson (714) 662-5600 (Emulex) Gary Lyons (415) 969-1777 (Nestar) Forget timing specs - there aren't any.
mwilliam@hpspcoi.HP.COM (Mark Williams) (07/11/90)
The "Industry Standard Architecture" Bus is implicitly defined in: IBM PC/AT Hardware Technical Reference 6183355, March '86, IBM The IEEE P996 "Personal Computer Bus Standard" is better: Contact Mike Fung, 408 434-0600 Chips and Technologies, Inc. Get the latest version -- mine is dated 14 May 1990. An excellent new book on AT Bus Design is just out: AT Bus Design, Ed Solari (Intel), available from Annabooks, 12145 Alta Carmel Ct. Suite 250-262 San Diego, CA 92128 800-462-1042 Caveat: Not all IO cards or systems follow the rules, so you may still have to do compatibility testing. Disclaimer: These are my opinions only, etc.
sward@cfa.HARVARD.EDU (Steve Ward, CF) (07/24/90)
From article <58084@bbn.BBN.COM>, by clements@bbn.com (Bob Clements): > A while ago (and every few months, I guess) the question came up > of what are the timing specs for the PC/AT bus. The answer, as > always, was that there is no published spec for the timing, ... Here it is: Book: ----- AT BUS DESIGN (IEEE P996 Compatible), by Edward Solari (member, P996 Committee) published by Annabooks, 1990, ISBN 0-929392-08-6 Annabooks tel. 800-462-1042, 619-271-9526 Annabooks, 12145 Alta Carmel Court, Suite 250, San Diego, CA 92128 This bus gives all timing and electrical info. The book is quite good. However, the orientation of the books is the implementation of the bus on a traditional CPU platform motherboard. This is okay, except that no real attention is given to the other environment, the so-called passive backplane system, though all needed technical information is in the book for extrapolation to this environment, the exercise left to the reader, by default. The book is also very overpriced at $60.00, but if you need the info right now... I have heard rumors about other books of similar ilk coming out, but for me these remain uncomfirmed apocryphal rumors. Note that REAL SOON NOW, the IEEE will publish the P996 specification: Personal Computer Bus Standard P996, IEEE (last I heard, this was at draft 2.00 and essentially done with respect to the technical details, leaving only some cleanup and administrative work to be completed, but this may or may not be a true characterization. Contact the IEEE for draft standard copies, if this is even possible). Also available, more or less: ISA BUS Specifications and Applications Notes, Janauary 30, 1990, Copyright 1989, Intel Corp. --contact Intel for a copy of this Intel document; they will probably give/sell you a copy. Note that this book deals with the ISA bus and some extensions to it, but gives a very light treatment to the EISA bus (32-bit bus). The ISA bus, with some extensions, is essentially the PC-AT bus, of which the PC-XT bus is a subset, so this book deals thoroughly with the standard (now it is, I guess) PC-XT/AT 8-bit and 16-bit busses, known collectively as the ISA bus. I do not know if the IEEE spec. goes beyond this, to cover the 32-bit EISA bus, of which ISA is a proper subset. For those who really want the EISA info, contact COMPAQ, as they have published a technical guide: Technical Reference Guide, Extended Industry Standard Architecture Expansion Bus, Copyright Compaq Computer Corp, 1989. -- Steven M. Ward ward@cfa.harvard.edu ,
wk0x+@andrew.cmu.edu (William Stephen Kish) (02/22/91)
Hello...
Does anyone have (or know where I can get) the hardware
specification for the AT bus? This information would be greatly
appreciated. Thanks.
Bill Kish
Carnegie Mellon University
wk0x+@andrew.cmu.edu
wk0x%andrew.cmu.edu@cmccvbguy@contact.uucp (Guy Lemieux) (02/24/91)
In <8bl1HKy00WBNM2TmsV@andrew.cmu.edu> wk0x+@andrew.cmu.edu (William Stephen Kish) writes: > Does anyone have (or know where I can get) the hardware >specification for the AT bus? This information would be greatly >appreciated. Thanks. Technical Reference Personal Computer AT Order #6280070 from IBM >Bill Kish >Carnegie Mellon University > >wk0x+@andrew.cmu.edu >wk0x%andrew.cmu.edu@cmccvb
rcollins@altos86.Altos.COM (Robert Collins) (02/27/91)
In article <1991Feb23.212206.6904@contact.uucp> guy@contact.uucp (Guy Lemieux) writes: >In <8bl1HKy00WBNM2TmsV@andrew.cmu.edu> wk0x+@andrew.cmu.edu (William Stephen Kish) writes: >> Does anyone have (or know where I can get) the hardware >>specification for the AT bus? This information would be greatly >>appreciated. Thanks. > >Technical Reference >Personal Computer AT > >Order #6280070 from IBM > The IBM Technical Reference Manual most definitely does NOT contain the hardware specification for the AT BUS. It does contain pin outs, but by no means does it contain a hardware description or timing diagrams. I would hate to see the requestor shell out $100.00 for this document only to find out that it isn't what he asked for. The following is a message that I typed in many months ago. I kept it as a file to merge into other messages...just like this one. In a recent posting, I saw a request for the ISA BUS timing specs. At the time, I couldn't find anything, but here is the information for a book regarding the ISA BUS and its timing specs. "AT BUS DESIGN" by Ed Solari. Annabooks 12145 Alta Carmel Ct., #250 San Diego, CA 92128 (800) 462-1042 $69.95 + S&H -- "Worship the Lord your God, and serve him only." Mat. 4:10 Robert Collins UUCP: ...!sun!altos86!rcollins HOME: (408) 225-8002 WORK: (408) 432-6200 x4356
dwsmall@miavx1.acs.muohio.edu (03/05/91)
> The IBM Technical Reference Manual most definitely does NOT contain the > hardware specification for the AT BUS. It does contain pin outs, but by > no means does it contain a hardware description or timing diagrams. > I would hate to see the requestor shell out $100.00 for this document > only to find out that it isn't what he asked for. > > In a recent posting, I saw a request for the ISA BUS timing specs. At the > time, I couldn't find anything, but here is the information for a book > regarding the ISA BUS and its timing specs. > > Annabooks > 12145 Alta Carmel Ct., #250 > San Diego, CA 92128 > (800) 462-1042 > > $69.95 + S&H but does this contain the pin outs that the IBM manual does? I'm trying to build a 16 bit ADC card for AT or better class machines to interface physcis experiments. I would like to use the 16 bit resolution of the AT bus but everything I'm finding is with respect to the 8 bit slot only. I've built these things for Apples before but never for IBM's does anyone know of a good text that would include everthing you need (for the 16 bit slot). I found a couple books that deal with the subject and an 8-bit card. Any and all help will be apreciated Derek Small