test-drb

test-drb@ccmp.vtda.org

101090 discussions

by stevew＠ka6s.com

>From Tom Watson - >Sorry wrong bits!! Wrong code set! >11101000 11001001 11000111 11001000 11100011 01000000 11010110 11010101 >01011010 > >4900796 (Somebody will understand this reference) Someone is trying to boot Fortran off of the Disk on an IBM 1620 me thinks... Steve Wilson

19 years, 3 months

Xebec Winchester controller

by martin＠biblewitness.org.uk

jd wrote: >HP's number for this OEM board--by MSC/Xebec is 88134-69910, 09135-69515, >and/or 09135-69501. I have no idea which number belongs to mine. FYI: These are all used on 5Mb drives with two sets of firmware classified as follows: 88134-69910 'L' Code - HP250 Model 20 09135-69515 'D' Code - 4-Volume 5-Mb (emulates HP 9895A drives - I use this for my 9845B and HP-85 & 87 systems) 09135-69501 'L' Code - single volume 5-Mb. Martin Web: http://www.biblewitness.org/technical

19 years, 3 months

Tiny BASIC Extended available

by eds_2＠yahoo.com

> I'm thinking that I would like to put together a very small > Z80-based SBC just for this interpreter. Do you know if this > code is ROMable? I'm reasonably sure it isn't ROMable. The good news is that the user entered program is stored immediately above the end of the listing at 1800H. Unfortunately, the input buffer appears to be stored somewhere early within the address space of the listing (1049H, I think), and although I'm still disassembling the code, I half suspect that there is some self-modifying code in there. At first, I even thought there was some self-modifying code in the intermediate language, but I think I was misinterpreting what was going on. In any case, there are definitely several writes within the 1000H - 17FFH space of the code, but hopefully I'll know soon how extensively one would have to modify this to make it ROMable. -Eric ____________________________________________________________________________________ Looking for earth-friendly autos? Browse Top Cars by "Green Rating" at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/

19 years, 3 months

Sol terminal in Polular Electronics July 1976

by swtpc6800＠comcast.net

> From: John S > Subject: Sol terminal in Practical Electronics July 1976 > > for Practical Electronics July 1976. This features a 8080A computer and > refers to the SOL terminal. Is there any relation between this computer > and > the SOL 20 computer? > Here is how Stan Veit remembers it. http://www.pc-history.org/sol.htm The stripped-down terminal version Lee (Felsenstein) designed for the magazine article had a personality module, but only had limited RAM memory. It was still more intelligent than most "glass teletypes," so it was called The SOL Intelligent Terminal. The full version was to come in two styles. The less expensive one had a simple keyboard and only one slot for expansion. It was called The SOL-10, and very few were ever built. The second model was a complete computer with an excellent keyboard and a card cage with five slots. It was called The SOL-20, and provided enough memory for general computer applications. When the prototype was complete, the Processor Technology crew headed for New York City to demonstrate it to Les Solomon. The machine had been named The SOL, in his honor. When Bob Marsh revealed the name to me, I called Les and joked, "They're naming the new machine after you - The LES Intelligent Terminal!" Michael Holley www.swtpc.com/mholley

19 years, 3 months

John Backus passes away...

by aek＠bitsavers.org

> I wonder which machine would take the prize for the > most done with so little? In the 60's, probably the LINC 1 or 2k 12 bit words, LINCtape, typewriter, CRT, and Lab I/O http://www.mit.edu:8001/people/ijs/epl/LINC.html

19 years, 3 months

VCF/Midwest 3 preliminary announcement

by pat＠computer-refuge.org

I'm happy to announce that VCF/Midwest 3 is being sponsored this year by Purdue University's Research Computing group, the Rosen Center for Advanced Computing. The event will be a *2 day* event this year, on July 14th and 15th. Sellam is working on getting the web site set up for this year's event, and it should be up shortly, at http://www.vintage.org If you are interested in speaking at the event, exhibiting, or just have a question, please contact me at vcfmw at computer-refuge.org. Thanks, Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

19 years, 3 months

John Backus passes away...

by roger.holmes＠microspot.co.uk

>>>> Did any computer built after 1960 NOT have a FORTRAN >>>> implementation? >>> >>> Yes, my ICT1301 (155+ built from 1962 to 1965) had no Fortran >>> compiler. >> >> I've not seen a Fortran compiler for any of the following : >> >> HP9830 (I claim this is a computer, it ran BASIC from ROM) >> >> Philips P850 (maximum 2K words of core, I believe larger P800 series >> machines did have a Fortran compiler available) >> >> HP9825, 9831, 9845, 9835 series >> HP80 series. >> >> Just about all the pocekt computers (Sharp, Casio, HP, etc) >> >> What abotu the IBM 5100? And for that matter the Commodore PET (I >> know >> the SuperPET had such a compiler), the C64, etc. And the Sinclair/ >> Amstrad >> machines (ZX*0, ZX81, Spectrums). And the Oric > > How many of the above would run *any* type of compile-to-machine- > language HLL compiler? Most of the BASICs were tokenized and > interpreted. > > A few of those that you've cited simply didn't have the resources for > it. > > But maybe not--even the lowly IBM 1620 with 20K digits (not bytes--a > character took 2 digits) of core and no disk drive would compile > FORTRAN. That's pretty remarkable when you consider that a 1620 > instruction is 12 digits long--and the bottom half-K or so was > dedicated to storing arithmetic lookup tables (the 1620 Cadet > couldn't even add two numbers without the tables first being loaded). > The card reader-punch was used as intermediate storage--you read in > pass 1 of the compiler, then your program, which caused a new card to > be punched for every statement. You then read in the deck for pass > 2, followed by your program and an executable object deck was punched > (and a listing was made on the printer). AFAIK, the Cadet equipped > with paper tape instead of cards could do the same thing. This was probably not aimed at me, but for the record the ICT 1301 had a COBOL compiler (if you count that as a HLL) but most programs were written in machine code with relativisers. The largest 1301 had 2000 words by 12 digits, but I think COBOL could run on a 1200 word machine, so 1200 x 12 =14400 digits, a bit less than a 1620. What it did (and still does) have is a 12000 word drum as backing store. Many 1301s also had mag tape too, but I am not sure COBOL needed to use them. Mind you 1301 instructions are mainly six digits long, Its just the block move and drum/tape I/O orders which are 12 digits. The card/paper tape intermediates reminds me of the older Elliott 920 Coral 66 compiler written by CAP (computer analysts and programmers). It was four passes and each pass punched out a tape to read into the next pass. The first pass expanded macros and was optional if you did not use any macros. The second and third passes converted from infix to polish, then polish to reverse polish (or maybe the other way round), and the final pass did code generation. Then you collected together all the tapes from all your program segments and libraries and fed them to a linking loader. If you managed to do that without tearing a tape you were rewarded by your program running. My boss wrote a mini operating system which loaded the programs and passed the intermediates via a huge disk (about a meter diameter with the axis horizontal, it was a head per track disc of a fairly small capacity, IIRC 2 million bits or maybe 2 million 18 bit words), which made life bearable. Later on we moved the compiler onto a GEC 4080 to cross compile for the 920. The 920 program grew and I had to modify the compiler so it could produce the binary output in chunks as it exceeded a 1000 foot roll of tape, and anyway I was the only person in the office capable of rolling up a full 1000 foot roll without damaging it. Roger.

19 years, 3 months

single transistor projects?

by brad＠heeltoe.com

[possibly off topic, but what isn't these days? :-)] When I was a kid I had a book, I think it was called something like "single transistor projects". As I recall it was full of lots of simple circuits featuring a single transistor. (or who knows, maybe it was 101 transistor project; I think I was in 4th grade at the time - late '60s) anyway, one was a single transistor FM radio. I just remember it had a single FET, a coil, a cap, some discreets. I think it told how to wind the coil "in the air". Does anyone remember such a book? I figure if anyone one would, it would be someone here... seems like a fun thing to build now days with my son. -brad

19 years, 3 months

Bitsavers subscription

by jwest＠classiccmp.org

I credit Guy Sotomayor with the original idea, a few others chimed in as well. So I ran it by Al Kossow and this was officially blessed by him.... The plan is for me to offer subscriptions to bitsavers for a fee. The idea is that you can sign up for a subscription and pick just the specific directory trees you want, or the entire archive. You are initially sent a complete copy of all the trees you selected (or full archive) on the medium of your choice (CD, DVD, HD, etc.). From that point on - for the subscription fee - you are automatically shipped a set of updates periodically - say every month? - that keeps your own personal bitsavers archive up to date. Perhaps this automated system could also allow purchase of a "one-off" cd/dvd without a subscription containing just the files and/or directories that you tag. Why purchase a subscription? Well, for one - it keeps you from having to constantly check bitsavers for what is new and download those files. It also will hopefully reduce the bandwidth on the site for people who decide they want a full copy. It gives you a way to get all the files in a courteous manner and keep up to date. Another reason - the cost of the subscription would be just a bit higher than the cost of media. The overage above the cost of media goes to the care and feeding of the classiccmp server. That means by buying a subscription you are helping to subsidize the cost of the classiccmp hardware, bandwidth usage, etc. etc. This is much like the FreeBSD CDROM subscription if you're familiar with that. You can get the identical bits elsewhere, but buying a CD subscription is convenient and directly supports the cause. I would also point out that this in no way changes your ability to download files directly from bitsavers or any of the mirrors for free. This is merely a packaging/update service to be viewed as a donation to the cause and a convenience for those who want to stay current on bitsavers. I am going to check with the developer working on the classiccmp website to see if this (tracking the membership, what directories they want, building the burn directories, etc.) is something that will fit well into code he has already done for the new classiccmp. If it is, great. If not, then I'll ask him if he wants this task. If not, then I'll come back to the list and see if people educated in the ways of php/mysql wish to contribute time to creating the software. Of course, if no one is interested, I'll just continue making the occasional trip downtown to the datacenter and burning CD's for people at no charge. It would be nice if there was interest in this though! Jay West

19 years, 3 months

ADDS Multivision

by mconnor＠cosmocom.com

I saw your post about finding MUON disks for your MultiVision. I was part of the development team that designed this. I designed the BIOS & alot of the HW dealing with the floppy & hard disks. I do not have any of the disks, but might be able to find some of the others developers. Would you be interested in selling or trading it? This is the first one or posting I have seen since 1980 when I left ADDS - the company who made it. I am really interested in trying to see if you would sell/trade it. I can spend some email time discussing it's history if you like. Thanks, Mike Connor _____ Michael E Connor Quality Assurance Team Lead CosmoCom, Inc.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> <?xml:namespace prefix = st1 />121 Broad Hollow Road Melville, NY 11747 USA Phone: +1 (631) 940-4213 Fax: +1 (631) 940-4562 EMAIL: <mailto:mconnor at cosmocom.com> mconnor at cosmocom.com URL: <http://www.cosmocom.com/> http://www.cosmocom.com _____________________________________________ Maximize Your Investment in CosmoCom Technology at CosmoCommunity 2007 Join us 30 May - 1 June, 2007 - Hauppauge, New York Learn more and register at <blocked::http://www.cosmocommunity.com///ohttp://www.cosmocommunity.com/> http://www.cosmocommunity.com

19 years, 3 months

Bitsavers subscription

by wacarder＠earthlink.net

>Jay West wrote: > >> I credit Guy Sotomayor with the original idea, a few others chimed in >> as well. So I ran it by Al Kossow and this was officially blessed by >> him.... >> >> The plan is for me to offer subscriptions to bitsavers for a fee. >> I'll sign up too. Ashley

19 years, 3 months

Looking for Mirage OS diskettes: Pinnace 1a or Sage II/IV

by daviderhart＠oldzonian.com

Hello, I'm looking for Mirage OS diskettes for a data recovery effort. I'm trying to recover data on a Pinnacle 1a (68000 based system) http://www.sageandstride.org/Pinnacle-1a-1.jpg The system has Mirage OS installed on the hard drive. The system no longer boots to the hard drive so I'm hoping to reinstall the Mirage OS on a different hard drive and access the current hard drive as a secondary drive. If anyone has a lead on where I can find a copy of some Mirage OS diskettes for either the Pinnacle 1a or for a Sage II or Sage IV, I would really appreciate it. Here is an old brochure on the Mirage OS: http://www.sageandstride.org/html/mirageos_0.html Thanks for any help. --- David W. Erhart daviderhart at oldzonian.com daviderhart at sageandstride.org http://www.sageandstride.org

19 years, 3 months

Sol terminal in Practical Electronics July 1976

by john_a_s2004＠hotmail.com

Hi, I saw this auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230104939789 for Practical Electronics July 1976. This features a 8080A computer and refers to the SOL terminal. Is there any relation between this computer and the SOL 20 computer? Regards, John _________________________________________________________________ Txt a lot? Get Messenger FREE on your mobile. https://livemessenger.mobile.uk.msn.com/

19 years, 3 months

Crossbar and NeWS questions

by aek＠bitsavers.org

> The Burroughs B5000/6000/7000 series mainframes used crossbar switches to > interconnect CPUs with memory and I/O processors. These machines were > introduced in 1961 or thereabouts. The relevant document is the B 5220 Central Control Technical Manual, orig issued in 1964 which discusses the crossbar: http://bitsavers.org/pdf/burroughs/B5000_5500_5700/B5220.51_CentralControl_… page 111 or so..

19 years, 3 months

Sol terminal in Practical Electronics July 1976

by frustum＠pacbell.net

John, it is one and the same. The production Sol was different than what appeared in the article. There were just a few prototypes made, and the one in the article is one of them. At www.sol20.org you can find scans of the article, and elsewhere is the PCB artwork for that revision board, which didn't appear in the magazine, but which was offered in the article for the cost of a self addressed stamped envelope. ----- Original Message ---- From: John S <john_a_s2004 at hotmail.com> To: cctalk at classiccmp.org Sent: Thursday, March 22, 2007 7:32:00 AM Subject: Sol terminal in Practical Electronics July 1976 Hi, I saw this auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230104939789 for Practical Electronics July 1976. This features a 8080A computer and refers to the SOL terminal. Is there any relation between this computer and the SOL 20 computer? Regards, John _________________________________________________________________ Txt a lot? Get Messenger FREE on your mobile. https://livemessenger.mobile.uk.msn.com/

19 years, 3 months

VAXmate Service Guide and Option Installation Guides

by dbetz＠xlisper.com

Does anyone want a DEC binder containing tthe VAXmate Service Guide, VAXmate Personal Workstation Handbook and installation guides for a number of VAXmate options? I got this with a bunch of MicroVAX stuff and don't have any use for it. I thought I'd offer it here before consigning it to the trash. Thanks, David

19 years, 3 months

Desperately seeking.. terminal

by feedle＠feedle.net

I'm hoping that there is somebody on the list who can help a brother out. I need some kind of basic terminal, preferably something VT-100 compatible, but I'll take what I can get. The screen can have a little burn-in, all that is really important is that it is legible and the keyboard functions, and that I can get 9600 baud serial out of it. Oh, and there's another catch. It needs to be somewhere within an 8-hour one-way drive of eastern Montana (that means Denver, SLC, Spokane, the Dakotas, Alberta and Saskatchewan, etc), or somebody willing to pack and ship on the cheap. I'm hoping to get away with around $100 (not including gas and/or shipping) E-mail me off-list (of course).

19 years, 3 months

software (actually anything classic computer related) directory

by aek＠bitsavers.org

> Some mention has been made on the list with regards to a "global" list of > classic computer related artifacts, be those documents (manuals), software > bits, other historical ephemera, etc. The concept I've been working with is > defining a standard record format for interchange amongst those that wish to > participate. Think of this as something like ANSI X.12 (Electronic Data > Interchange). Seth would probably be better qualified to talk about this, but there is an exchange protocol in LOCKSS that may be useful for this, though it is geared more towards electronic copies of documents, including province, access rights, etc. in a distributed content environment.

19 years, 3 months

beware: "Microsoft BASIC" paper tape on eBay

by aek＠bitsavers.org

> did you try emailing the seller and say that? Of course I did, prior to posting the classiccmp message. I received no reply, and the auction is still there, unmodified. Would it have been better not to warn potential buyers on this list about it?

19 years, 3 months

Board ID?

by dbetz＠xlisper.com

I have a qbus board that I'd like to identify. I think it's some sort of SCSI adapter but I don't know if it will support disks or if it is "tape only". The board is labeled "TD Systems (c) 1987 ASSY 210-00031". In another place on the board it says "211 00031 REV E". It has a ROM on it labeled "Viking Q/B A4.1". Is this a Viking SCSI adapter? Can anyone point me to a manual for it? I've already checked Bitsavers and Manx and haven't found it. Also, if it is a SCSI hard disk capable adapter, does it have an onboard boot that will work with a PDP-11? Thanks! David

19 years, 3 months

John Backus passes away...

by RMeenaks＠olf.com

http://www.nytimes.com/2007/03/19/obituaries/20cnd-backus.html?ex=133204320… Ram

19 years, 3 months

beware: "Microsoft BASIC" paper tape on eBay

by aek＠bitsavers.org

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230107368051 You can read the first dozen bytes in the picture, which are 7 bit ASCII, starting with 1010000 1010010 1001111 "PROCESSOR TECHNOLOGY BASIC" most likely 4K Proc Tech BASIC, given the tape length.. Jim B. could probably confirm that.

19 years, 3 months

Hex Keypad

by dm561＠torfree.net

-----------Original Message: Date: Thu, 22 Mar 2007 07:53:46 +1100 From: Doug Jackson <doug at stillhq.com> Subject: Hex Keypad On the subject of Blinken lights and toggle switches, I have had difficulties finding decent mechanical keyswitches to use for projects. Essentially, I need to make a hex keypad, with a couple of extra function keys. I know that now we would simply get a membrane rubber thing made up, but once upon a time, I would purchase 20 mechanical switches, and solder them to veroboard. Sadly, I can't find a source of these switches any more..... Same applies to ACSII keyboards - I am fully aware that I could get a PC keyboard and a microcontroller and have ASCI out - but that is 'yet another pc keyboard' Any ideas? Doug --------------Reply; Let me know off-list if you can't find what you need; I've got several boxes full of old keyboards etc. (including an APL keyboard, although I can't recall what that's from ). mike

19 years, 3 months

Crossbar and NeWS questions

by jonas＠otter.se

The Burroughs B5000/6000/7000 series mainframes used crossbar switches to interconnect CPUs with memory and I/O processors. These machines were introduced in 1961 or thereabouts. Jonas Otter

19 years, 3 months

Real Programmers (was: Re: John Backus passes away...)

by sdc695＠yahoo.com

On Wed, 21 Mar 2007 15:34:12 "Ethan Dicks" <ethan.dicks at gmail.com> says: > > > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Subject: Re: John Backus passes away... > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >> On 3/21/07, Sridhar Ayengar <ploopster at gmail.com> wrote: >> Nope, real programmers write in binary. > > 01010010 01101001 01100111 01101000 01110100 00100000 01001111 01101110 > 00100001 > Sorry wrong bits!! Wrong code set! 11101000 11001001 11000111 11001000 11100011 01000000 11010110 11010101 01011010 4900796 (Somebody will understand this reference) -- Tom Watson tsw at johana.com ____________________________________________________________________________________ Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/features_spam.html

19 years, 3 months

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