test-drb March 2007

test-drb@ccmp.vtda.org

239 participants
488 discussions

by jwstephens＠msm.umr.edu

for the St. Louis collectors this might be interesting. It may even be the one I sold some years ago. I had both this one, and the small keyboard package (ACT-I?) which fed composite video as well. I wish I still had the original one, but IIRC I got quite a bit for it in the 80's when I sold it. maybe Jay might like this one if he doesn't have one already. Just be sure if you buy this one or any similar to make sure they handle the suspension of the CRT in the package. I have had a microdata Prism for example snap the plastic mounting tabs by not supporting the thing and then putting it in proper packaging. jim 270095781634

17 years, 9 months

Vintage terminals (was Re: PDP-11 available in New Zealand)

by wacarder＠earthlink.net

>> > Where can you get real VT52s nowadays? I haven't >> seen one on Ebay for at >> > least three years. >> >I have never seen one on eBay - and I have looked >often. Found a lot of other things that are named VT52 >though... I have several VT52s, alive and semi-alive. I have been clearing out some space in my shop and would be willing to part with one of the semi-alive ones for a small fee. If anyone is interested, contact me off-list at wacarder at usit.net. If you're not into component-level debugging, I can dig up the name of a place in the northeastern U.S. that would repair them for $125 a couple of years ago. Ashley Carder http://www.woffordwitch.com

17 years, 9 months

DEC Disks Available

by James＠jdfogg.com

> I was just at the local scrapper and had him put aside two > RL02s, an RA81, an Unibus crate ( I wasn't able to get the > model), a dual cassette box, and the red and orange trim > pieces that go at the top and between the units - everything > was about to be sent to the shredder. If there is any > interest, let me know and I'll pass on the info. I can do any > checkout anyone wishes later in the week. What part of the country are these in?

17 years, 9 months

FW: Free PDP-11/34A in Germany

by cvijovic＠EUnet.yu

Dear Sir Where I can find to buy PDP11-04 or 11-34 and what will be a price. Velimir Cvijovic

17 years, 9 months

Gemini, Shugart and Xebec

by richard.smith＠mewgull.com

Hi all, I've just dug out my old Gemini 80-BUS computer to remind myself what I was doing back then..... It has a Shugart SA604 hard drive with a Xebec S1410 controller and a Gemini GM829 FDC/ SASI controller card.....as well as two TEC FB-504 floppy drives. I have the original test certificate for the Shugart, dated 5-16-84 signed off by the operator Barb! I have a file with all the old user manuals, and a catalogue from the mid-1980s with a price list from May 1986! Question is, do I put this lot back into the cupboard, do I sell it or do I junk it? Any suggestions? Richard

17 years, 9 months

Chi Corp. / Computer Logics PCTD3 and PCTD16 Pertec-interface

by glen.slick＠gmail.com

Pulled this out of archives: > Chuck Guzis cclist at sydex.com > Wed Nov 30 01:06:31 CST 2005 > > I've got both Chi Corp./Computer Logics PCTD3 and PCTD16 Pertec-interface > tape controlers. What I don't have is a clue as to how to drive them. > > Normally, this wouldn't be a problem that running down traces and some > pencil and paper work wouldn't cure. But, other than for a couple of > lines, much of the logic for these cards is hidden inside an early Xilinx > FPGA. Thus far, my "pork poking" hasn't given up any information. > > So, I'm wondering if anyone has any information on these beasts or perhaps > has hung onto the TDRIVER.EXE or API.EXE files. I'm not interested in > using the files, but rather want to use them to give up some clues on how > that blasted FPGA is set up. > > Thanks, > Chuck > Do you still have a PCTD16? I acquired one not too long ago and have it cabled up to a Fujistu 2444AC. I'll have to take another look at the card. I don't remember seeing anything that looked more complicated that 16-pin DIPs. Nothing that clearly stood out as an FPGA. Luckily it was acquired inside a PC with Chi API.EXE and Outright on the MS-DOS boot drive, along with a small manual with the programming interface for the API.EXE TSR. No sign of TDRIVER.EXE. It didn't take too much to port the 2.11BSD maketape.c program (http://www.tribug.org/pub/tuhs/PDP-11/Distributions/ucb/2.11BSD/) to an MS-DOS application using the API.EXE TSR interface. Last night I created a 2.11BSD installation tape using the PCTD16, then connected the 2444AC to a QT13 (using a pair of Pertec cables I built up myself) and finally got 2.11BSD installed and booting up on my 11/73. -Glen

17 years, 9 months

14" drives

by marvin＠rain.org

Someone I know *had* some 14" drives but the only thing I saw left were two 14" platters and an aluminum casing. It sounded like the complete unit was about 24" or so square and maybe 18" high. Rack mount? I don't know. First, does this *really* vague description describe anything useful? Second, there was half an aluminum casing left; is this worthwhile saving? He is going to see if there are any more drives left, but I am kind of curious if it is worth the effort.

17 years, 9 months

Vintage terminals (was Re: PDP-11 available in New Zealand)

by jfoust＠threedee.com

At 04:03 PM 3/8/2007, Ethan Dicks wrote: >For VT100-compatible work, it's not _too_ hard to set up an emulation >environment that handles 99% of what's thrown at it (vttest is a good >way to see how your emulator _really_ behaves). If you need >double-high/double-wide or flashing chars, etc., I've wondered if anyone ever developed an emulator based on an emulation of the hardware and ROM inside the terminal. - John

17 years, 9 months

Data I/O model IX and 1702A proms

by jack.rubin＠ameritech.net

Dwight, The early Data I/O burners took individual sets of digital/analog cards to program each prom or family. For models 1 through 9, these were separate cards. In Models 17 and 19, the same two cards were combined in a Card Pak (carrier) which snapped into the chassis just like the UniPaks. For the Intel 1702A and equivalents, the card set was the 909/919-1183-1 (909 meant the two cards alone, 919 is the same two cards in a programming pak carrier. In either case, the card set consisted of a "digital" card, 701-1173, and an "analog" card, 701-1183-1. The cards were joined by cable 709-1608. In addition, a special socket adapter, p/n 1047, was used for these PROMs. I have the programming pak carrier minus the socket adapter and with a set of 1063 cards installed. Unfortunately, I have no idea what the target PROM is for this card set. I do have the calibrator and 1702 adapter card for it but without the programming cards it really isn't too useful. Scooter (riatla) is one of the eBay "good guys" and would probably be willing to take a peek inside the chassis to see what cards are included. More to the point, I figured by now that you or one of the other listers would have come up with a modern programmer for the 1702A - can't be too difficult other than the -48v programming requirements and I expect a few others would be interested in the project if someone designed one. Jack -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.7/711 - Release Date: 3/5/2007 9:41 AM

17 years, 9 months

Vintage terminals (was Re: PDP-11 available in New Zealand)

by ajp166＠bellatlantic.net

> >Subject: Re: Vintage terminals (was Re: PDP-11 available in New Zealand) > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Date: Thu, 08 Mar 2007 17:05:00 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 3/8/07, Chuck Guzis <cclist at sydex.com> wrote: >> David Griffith <dgriffi at cs.csubak.edu> writes: >> >> > Where can you get real VT52s nowadays? I haven't seen one on Ebay for >> > at least three years. >> >> At the expense of looking stupid (again), why not use one of the many >> VT-100/VT-220-type teminals that also have a VT-52 mode? > >Dunnou about David's needs, but for my own (VTEDIT under OS/8), >emulation within a more modern dumb terminal is rarely accurate >enough. If you just want approximate emulation, lots of DEC terminals >and DEC-compatible terminals do offer VT-52 emulation, but I've only >tested and rejected the emulation in the VT220. > >-ethan I use my VT320 and 340 in VT52 mode with no issues. The VT100 does it very well. Vt220 did bse VT52 but it was a marketing error to not make it fully compatable, something fixed in later tubes. The hard reality is the VT52 was so limited that to write an emulation >from scratch is fairly trivial. Heck I did a PT VDM-1 driver that did base VT52 (video side) sequences so I could use it with Vedit and VTedit (under cp/M and as terminal to PDP8). The only significant breakage was 64 vs 80char lines. What is hard is a good keyboard emulation of VT100 or VT52 on PCs as the keypads really don't match. PC terminal emulations are mostly plain broken. Allison

17 years, 9 months

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test-drb March 2007