test-drb

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101090 discussions

by thomas.gardner＠sbcglobal.net

Philip Pemberton wrote: > Hi guys, > Does anyone know what the largest capacity MFM or RLL (i.e. > ST-506/ST-412 type interface) hard disk was? And then there was the Maxtor X1240R circa 2Q1987, 239.98 MB using RLL Tom

16 years, 6 months

SCIPP 1600 info?

by pat＠computer-refuge.org

Does anyone know anything about a Tullamore/Victoreen SCIPP 1600? I have found one of these, and it appears to be some sort of computer- based "analyzer" from the 70s, but I can't find much using google, besides references in papers to having used one. A few crappy pics here: http://www.flickr.com/photos/vax-o-matic/sets/72157622536984302/ Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

16 years, 6 months

OS8 Source listing

by bqt＠softjar.se

Pontus <pontus at update.uu.se> wrote: >> Pontus Pihlgren wrote: >> > Hi. >> > >> > I was browsing ebay and found these two auctions: >> > >> > http://cgi.ebay.com/PDP8-PDP-8-pdp8e-Source-Printout_W0QQitemZ290359238887 >> > >> > http://cgi.ebay.com/PDP8-PDP-8-pdp8e-TECO-Source-Printout_W0QQitemZ29035927… >> > >> > I don't know if source listings where normally distributed or if this is >> > a rare find, perhaps even something that should go to a museum. Is this >> > source readily available? >> > >> > If not, I hope whoever buys it will scan it an preserve it, I'm >> > considering doing it myself. >> > >> > Kind Regards, >> > Pontus. >> > > > No replies? surely someone must know if this unique or available to > anyone with a set of OS/8 tapes? Pretty sure I've seen the sources already on the net. Pretty sure I also have them somewhere. I definitely have TECO-8. And it was available from the DECUS library in the past, but that was many years ago by now. (That's where I got it from.) Maybe you should start looking at our own ftp archive? :-) Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

16 years, 6 months

Looking for a punch-card reader.

by pat＠computer-refuge.org

As I didn't end up getting the OMR-2000 that ended on ebay yesterday, I'm still sort of looking for a punch card reader, preferably something that's functional, and that won't take too much effort to connect to a machine I already have (eg, one of the surplus Documation? 2000 election units). I don't have a big budget for this, or any REAL need, but I do have some cards I'd like to archive at some point from Purdue's old CDC gear, and of course who doesn't need to have a punch card setup laying around?? Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

16 years, 6 months

6502 assembler for RSX?

by bqt＠softjar.se

"Ed Groenenberg" <quapla at xs4all.nl> wrote: > Hi, > > Has anybody heard of a 6502 assembler running under RSX-11M? > And is there any documentation for it? Pretty sure there have been one or two in the DECUS archives. But I'd have to make some searches to locate it. But you can perhaps do that yourself on trailing edge? Johnny

16 years, 6 months

DECTapes on eBay - MADNESS??!?

by hachti＠hachti.de

Hey, I watched the following auction, just for curiosity: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=290357667738 Now it has ended. The 12 tapes went for $430!!! None of those has an original DEC label. Is there anything extremely important on them? Or are DECTape reels rare, uncommon and valuable? Any ideas? Regards, Philipp -- http://www.hachti.de

16 years, 6 months

Any experience with or recommendations on restoring rusted galvanized steel?

by ethan.dicks＠gmail.com

Hi, All, Some of the equipment I have has been through the wringer before it got to me so I have a couple of items of unpainted, galvanized steel where the galvanization is gone in patches larger than your hand and the steel underneath has oxidized to black (not so bad) or red (not so good). At the moment, I'm dealing with a single-board-computer "base" and a semi-custom rack shelf that both need some help. I know I can treat red iron oxide (rust) with naval jelly, but then I still have bare steel with no galvanization. I'm not expecting to get a cosmetically perfect item, but is there a good way to restore/protect things like this, or should I just expect to paint the entire item (it would look strange to just paint the formerly-galvanized area). Obviously, descaling, sanding and painting is one way to deal with this. I'm looking for possible alternatives. Thanks for any suggestions or pointers, -ethan

16 years, 6 months

HP-CHM agreement

by aek＠bitsavers.org

Al Kossow wrote: > > I annouced a few months ago that the agreement had been signed. > > I'm attaching a pdf. If the attachement gets eaten, i'll put it > on bitsavers under http://bitsavers.org/bits/HP/ > Looks like the message was eaten. The pdf is on bitsavers for you to take a look at. CHM hasn't issued a press release about it since we're still doing things like trying to convert the interleaf formatted manuals to pdfs and are organizing what we have. What HP actually donated was materal from about the last 10 years of the product's life (RTE-A, mostly). The earlier code is coming from other holdings.

16 years, 6 months

ASR 33 not horizontally spacing

by billdeg＠degnanco.com

> > I know you mention it in the Subject: line, but there are many models of > Teletype (and even more teletypes, using the term generically). Please > specify this is an ASR33. > I have more or less fixed my Teletype Model ASR33. The pieces are out of alignment, but overall it's minimally functional. Bill

16 years, 6 months

Catweasel support for Intel M2FM working!

by tshoppa＠wmata.com

Al writes: > Brian Lanning wrote: >> He says that all of the floppy file formats just end up being a series of >> blocks one after another so that all you need to know is the block size and >> the number of sectors per track. >I didn't know if I should laugh or cry when I read that sentence. It certainly >explains why software support from the vendor for the board is so poor if he >seriously believes that. Everybody has to draw boundaries over what they're gonna try to do, and what they not try to do. I think it is reasonable for the Catweasel people to say they only log transitions on the floppy and that they don't try to do anything else. Other people can pick up where their expertise comes in. Details of file formats of every obsolete 12-bit OS is not something I would trust the Catweasel people to do in fact. I know of floppy disk formats that in fact are not in fact fixed sector size, they are more like a cassette tape filesystem where sectors vary in length as necessary. Remember Al, that's why we go for image files as the actual archive with everything else just an interpretation or display. As Tom Lehrer wrote: "once the rockets are up who cares where they come down that's not my department, says Wernher von Braun" Tim.

16 years, 6 months

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