test-drb March 2007

test-drb@ccmp.vtda.org

239 participants
488 discussions

by sellam＠vintagetech.com

As a follow-on to my previous request for a VCF Southwest coordinator, I'd also be interested in hearing from those that would really like to have such an event and would make an effort to come. I imagine the region it would cover would be the traditional southwest states as well as areas as far east as Alabama as well as north of Texas. Please feel free to e-mail me directly or simply reply here. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

17 years, 1 month

rs232 capture?

by brad＠heeltoe.com

anyone know of a simple RS-232 capture program for Windows 95 which will capture from 2 serial ports and give a timestamp which is reasonable, like 10ms accuracy? (I might be dreaming, I realize) I'd use DOS, but my 2nd serial port is PCMCIA. Alternately, if such a thing exists for Windows XP running on a modern PC with USB serial ports, I'm open to that also. I need to do some field data collection and I figured someone here might know of a simple program. thanks! -brad

17 years, 1 month

Arcturus Computer and display system.

by RodSmallwood＠mail.ediconsulting.co.uk

Hi All Whilst sitting on the plane on the way back from Newcastle yesterday. It reminded me of a system I saw at Gatwick airport in the early 1970's. I'm pretty sure it was run by a mini computer called an 'Arcturus'. I can clearly remember the grey rack mounted box with its row of toggle switches and lamps. I was there to install a VDU (sometimes referred to as a glass teletype). The big teletype they drove it from made the whole place shake and the VDU I fitted of course did not. It drove the departure / arrival TV monitors. The way it generated the characters was curious to say the least. It had a large number of circuits which generated parts of characters. One did a vertical bar, another produced a whole circle whilst others output parts of a circle, forty-five degree bars and so on. For each character cell the component parts of the required character were selected summed and added to a TV raster. Does anybody remember the Arcturus? Rod Smallwood

17 years, 1 month

IBM 3420 008 Magnetic tape storage on eBay -- needs rescue

by wmaddox＠pacbell.net

There are a pair of these drives on eBay, with 10 hours and a few minutes to go. The current high bidder is a gold scrapper (jeepguymud), and he hacks up old mainframes and sells gold parts on eBay. Anyone in the Cincinatti area? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220094878959 --Bill

17 years, 1 month

Old UPSs

by tpeters＠mixcom.com

I'm trying to get two old UPS units to work. They were made by Best Electric / Best Power Technologies and apparently, that firm (in Necedah WI) has changed hands at least twice. Entering www.bestpower.com into a browser gets you an immediate redirect to http://www.powerware.com/UPS/BestPower/Products.asp, an Eaton company, which knows nothing at all about these units. I've got a model ME2.1KVA unit that needs four 12V, 35Ah batteries. I think it works, I just can't afford the batteries. Best price I've seen is about $49. The UPS is huge-- about 18 inches front to back, and darn near two feet high. I also have a ME700VA unit that uses the same battery, just one of them. Both have serial ports and lots of dipswitches. Anyone know where to find a manual for these? TIA, Tom ----- 96. [Philosophy] "You are, of course, correct, and I disagree completely." mikeh at netcom.com (Michael F. Howard) --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB: http://www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

17 years, 1 month

Can I run ADVENT on my PDP-11/23+ ?

by charlesmorris＠hughes.net

I have a rack-mounted 11/23+ (IIRC, 4 Mword RAM) with one RL02 drive, and a KSR43 TTY that is sitting and just gathering dust. I'd like to run ADVENT on it. Is there a version for this CPU? If so, could someone make me a bootable RL02 pack? I could either mail one of mine, or just purchase the pack. Will pay for your time, pack, postage, etc. Please let me know. thanks Charles

17 years, 1 month

Fortran Versions (was JB Passes)

by swtpc6800＠comcast.net

> How did newer versions of the language handle deprecation of the sense > switch - error, warning, ignore? I was evaluating compilers for the IBM PC in late 1982 or early 1983 and tried the original Microsoft Fortran. The error message in the manual for the read sense switch statement was somethine like "you show me the switches and I will read them." We evaluated Fortran, Pascal and C and selected C for our project. We needed a language that would support VAX VMS, VAX Unix, and the IBM PC. Michael Holley. www.swtpc.com/mholley

17 years, 1 month

"Classic Operating Systems" (2001, Hardback)

by legalize＠xmission.com

Book description: <http://www.amazon.com/Classic-Operating-Systems-Brinch-Hansen/dp/038795113X…> Buy it new for $20: <http://www.hamiltonbook.com/hamiltonbook.filereader?460c1479000fdacd271d424…> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 1 month

Xebec Winchester controller

by martin＠biblewitness.org.uk

jd wrote: >biblewitness.org.uk wrote: >> 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 >> >> >Thanks. That's useful. > >Now if only I knew what the Xebec part numbers were for the HP >models/firmware... > >I have four different sets of Xebec firmware. Two of the sets have the >"D" or "L" formats, selectable by jumper. >One of those two also works with 10Mb disks but will only format the >10Mb as 5Mb or the 4-volume "D" format. AFAIK HP only used the above three (MSC) controllers (for ST506), after which they designed and manufactured their own controller for their 5 (ST406), 10 (ST412) and 15Mbyte (ST419) Winchesters. For what it's worth, the HP controller number for their 913xB drives is 09133-69514. For 10MByte: J6 Pins jumpers (10M, One Volume and 4XX) are all installed. I've no info on The 15Mbyte configuration. Hope that helps, Martin

17 years, 1 month

2708 EPROM progreammer - old magazines designs

by dm561＠torfree.net

------------Original Message: Date: Wed, 28 Mar 2007 20:49:28 -0700 From: "Michael Holley" <swtpc6800 at comcast.net> Subject: 2708 EPROM progreammer - old magazines designs > I am thinking of building a programmer for the 2708 EPROM, that can also > read an EPROM and dump it to a serial port. > Here are the schematics and software for a MC6800 based design from 1977. http://www.swtpc.com/mholley/MicroWorks/B09_Index.htm Michael Holley -----------Reply: Michael: FYI, the same issue of KB (2/80) also contains instructions for mods to the SWTP MP-R programmer to burn 2708's. And also an article about adding an amp chip to make the AC-30 more reliable. You might want to add them to your excellent SWTP site. mike

17 years, 1 month

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test-drb March 2007