test-drb March 1998

test-drb@ccmp.vtda.org

167 participants
859 discussions

by maxeskin＠hotmail.com

OK, I moved the System into a room where there is light and power. There are no 220V plugs, though. So, I have 2 choices: a)Step-up transformer - how much would 110-220 1700 watts min. cost? b)Using a bunch of PC power supplies to power the DC components. My first problem is how I trick a PC/AT power supply to stay on when it's not hooked up to anything. Do I need to short something? Next is the problem of pinouts on the 34. There is ground and +5v labelled clearly. THere is also a circuit board with lots of screw terminals. Could someone tell me the voltages on those (it's a board right below the CE panel and a bit on the right)? ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

26 years, 9 months

HP 82143A Peripheral Printer

by ds_spenc＠alcor.concordia.ca

I picked up an "HP 82143A Peripheral Printer" a little while ago. It physically resembles the "HP 82162A Printer/Plotter" that is pictured, attached to an HP-75, in a little book entitled "Computer in Your Pocket" which reviews several early pocket and notebook computers. Will the 82143A (the one I have) plug into an HP-75? Will it work with anything else? What kind of battery does it take? Power connector? Pinout of the 12-pin connector? The printer still has a small roll of paper in it (about 2.25" wide) and I wouldn't mind finding out if the thing still works. I got it at a Salvation Army store, and there was no sign of whatever it had been attached to. Doug Spence ds_spenc(a)alcor.concordia.ca

26 years, 9 months

Silicon Graphics Power Series machines available (Chicago)

by eric＠fudge.uchicago.edu

My department is getting ready to scrap two Silicon Graphics Power Series computers. They are both quite dead (parts from the one were used to keep the other going until there were no more reliable CPU boards left) and have been stripped of some parts, but it may be possible to bring them back to life by some magic, or at least to get some use out of the 19" racks and power supplies. If you have any interest in these, please let me know as soon as possible before they are thrown away. They are large and heavy and you will have to pick them up from the campus of the University of Chicago. Eric

26 years, 9 months

Hey, just a minute (Re: "First" key system?)

by chemif＠mbox.queen.it

At 10:29 23/03/98 -0800, Bruce wrote: > Sam, speaking as an ex-telco person, I can say with confidence that the >Horizon was far from being the first "key" system. That honor goes to the >original electromechanical 1A system, which was introduced in the late >50's/early 60's. > Thus endeth key system history 101. We now return to normal topical stuff. Hey, hold on a minute: How many people are in this list also collecting CLASSIC TELEPHONY??? ???????????????????????????????????????????????????????????????????????????? ? Riccardo Romagnoli,collector of:CLASSIC COMPUTERS,TELETYPE UNITS,PHONE ? ? AND PHONECARDS I-47100 Forli'/Emilia-Romagna/Food Valley/ITALY ? ? Pager:DTMF PHONES=+39/16888(hear msg.and BEEP then 5130274*YOUR TEL.No.* ? ? where*=asterisk key | help visit http://www.tim.it/tldrin_eg/tlde03.html ? ? e-mail=chemif(a)mbox.queen.it ? ????????????????????????????????????????????????????????????????????????????

26 years, 9 months

drive info needed

by kaikal＠MICROSOFT.com

According to my ancient HD reference textfile, there's a 93028-A and -AD. The -AD is an IDE drive and the -A is an ST506 RLL drive. Specs are identical, 19.86 MB, 69ms, 3.5" HH, 2/782/26 geometry. Kai > -----Original Message----- > From: allisonp(a)world.std.com [SMTP:allisonp@world.std.com] > Sent: Monday, March 23, 1998 2:04 PM > To: Discussion re-collecting of classic computers > Subject: drive info needed > > I have a WD93028A disk I know the geometry but the interface is > apparently IDE. It's currently attached to a 8bit ISA card (also from > WDC) and I'm curious about it. > > What I need to know is what flavor of IDE it is (it may be 8bit) > and its pinouts. > > > Allison

26 years, 9 months

KAYPRO

by donm＠cts.com

Hello Charles, I have taken the liberty of posting my reply to the classic computer mailing list as one of the readers may be interested. Good luck! - don ==================== On Mon, 23 Mar 1998, Charles Almind wrote: > Dear Don, > I am trying to sell a Kaypro 1 '84 with lots of software, the Z-system, > 20 Meg HD, 1200 Baud modem and a free Epson > PX-8 laptop thrown in for good measure. Do you know anyone interested? > I paid $200 for it and would like > to get that if at all possible. Can you help me out? > Thanks > Charlie Almind > calmind(a)algorithms.com > > donm(a)cts.com *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives Chairman, Dina-SIG of the San Diego Computer Society Clinging tenaciously to the trailing edge of technology. Sysop - Elephant's Graveyard (CP/M) - 619-454-8412 *--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--* see old system support at http://www.psyber.com/~tcj visit the "Unofficial" CP/M Weg site at http://cdl.uta.edu/cpm with Mirror at http://www.mathcs.emory.edu/~cfs/cpm

26 years, 9 months

Tuning 8" floppies

by dwollmann＠ibmhelp.com

I have a MicroTech ReformaTTer unit with two 8" NEC floppies attached to a PC with the MicroTech FDC. Both drives seemed to be in need of a tune-up (head alignment, in particular) when I installed the unit, and now (this is four yrs. later) I can only read diskettes with one drive, the other just gives me "sector not found" errors. Is it practical for me (me = board swapper) to try to align the heads on these drives manually by trial and error? Is there still a source for the disk required to do it the right way? I have access to a scope if I need one. -- David Wollmann dwollmann(a)ibmhelp.com

26 years, 9 months

'SIMPLE' (was:Arrrgh! Micro$h*t again.../old basics)

by allisonp＠world.std.com

<> :Simple yes, useful? <If you've only got 512B of RAM, or a 256B PROM, then yes :-) <> <>there have been a few tiny languages built over the years. there was <>SIMPLE (and can someone describle it here please?) I just dug out one I have that is in the same frams. BASEX, it falls between basic and asm. Fast, small, integer. Allison

26 years, 9 months

GPIB + disk drives

by rigdonj＠intellistar.net

Doug, I saw Tony's reply and responded to it before seeing this one. I thought you had an HP drive but since it's a GRID drive I can't say what kind of format or command set it uses. At 06:54 PM 3/22/98 -0600, you wrote: >I could use a quick tutorial on GPIB as it applies to computer device >interfacing. > >I want to read an external hard disk that belongs to a GRiD w/a GPIB >interface. I recently picked up at National Instruments GPIB-PC-II card, >found the drivers on their web site, and stuck the thing in my Toshiba >T5200 (a nice little box that should hit classic status some time soon). > >The card and low-level drivers seem to work great, but I can't find any >higher-level drivers that know how to talk to this drive (or any drive, >for that matter). Do drives that talk GPIB all talk the same way? If so, >any idea where I might be able to find an MS-DOS driver that sits on top >of the GPIB driver I've installed? Many PC type HP-IB drivers assign the HP-IB interface as a COM or LPT port and are used to drive plotters only, not disk drives. > >Should I give up on this approach and simply pull the drive out of the box >and see if I can talk to it with an MFM controller? It's a 10MB 5.25" >drive from around 1982, so I'm assuming it's a Seagate. You could try, I have no idea if it would work. I have one of the HP kits with the HP-IB card and software that can be installed on a MS-DOS PC to operate some of their disk and tape drives. Email me if you want to borrow it and try to connect your drive with it. Joe > >-- Doug > > >

26 years, 9 months

"First" key system?

by kyrrin＠jps.net

Sam Ismail typed out... >I have an AT&T Horizon phone system (circa late 70s) which is significant >in the history of telephone systems as it was the first "key" system. It <reaminder snipped> Sam, speaking as an ex-telco person, I can say with confidence that the Horizon was far from being the first "key" system. That honor goes to the original electromechanical 1A system, which was introduced in the late 50's/early 60's. During the early-to-mid 60's, the 1A1 was introduced. It had several improvements over the 1A, mainly in reduced size, weight, and complexity. In the later 60's, the venerable 1A2 key system components were introduced. They endured well into the early 90's, and are still in use in various incarnations to this day (I have a 1A2 system here in the house). The Horizon system fits neatly into the category of 'hybrid' systems. It could, dependent on programming, become either an electronic key system or a small PABX, incorporating the best features of both. Thus endeth key system history 101. We now return to normal topical stuff. ;-) BTW, if you ever want to look for a good home for that Horizon... ;-) -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin(a)jps.net) "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."

26 years, 9 months

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test-drb March 1998