test-drb October 2009

test-drb@ccmp.vtda.org

146 participants
173 discussions

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

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

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

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

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

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

ASR 33 not horizontally spacing

by roger.holmes＠microspot.co.uk

Just a suggestion but I had a KSR33 which did much the same. There was a piece of thin flat (spring?) steel on the carriage which got broken. On doing a carriage return, the ratchet mechanism which normally moves the head to the right gets dis-engaged. When the carriage gets back to the left, the piece of steel pushes against an arm which re-engaged the ratchet, only on mine it wasn't. On 12 Oct 2009, at 18:00, cctalk-request at classiccmp.org wrote: > Message: 1 > Date: Sun, 11 Oct 2009 17:17:22 -0400 > From: B Degnan <billdeg at degnanco.com> > Subject: ASR 33 not horizontally spacing > To: cctech at classiccmp.org > Message-ID: <4AD24B62.9050706 at degnanco.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I knocked over my previously working teletype. > > After locating all of the pieces, I carefully re-installed as much I > could. The whole thing came apart, little pieces everywhere. The > typewriter became detached from the keyboard. Pretty bad. > > I almost got it working, but there is one thing that I cannot seem > to fix. > > The problem is that the print head is not moving horizontally along > the > line, it just says in place and types each character on top of itself. > > I do know that the teletype is sending data correctly from the > keyboard > to the computer through the serial cable, and the computer is > receiving > the commands. Output from the computer to the teletype is received and > the print head itself is printing the correct characters. The > problem is > that the print head is not being moved to the right/horizontally. I > can > manually move the print head while in a operation (I can send a punch > command to the printout paper for example) and if I time it just > right I > can space out the printed characters manually so I can see what has > been > sent from the computer. > > Can anyone help identify the fix? > > I would be willing to travel to someone with experience who repairs > these (w/i 250 miles of Wilmington, Delaware), we can talk offline > about > service fees/trades. I have a lot of spare teletype and other parts. > Worst case I guess I will offer buy another stock ASR 33 if anyone has > one and this one can't be fixed. Is there such thing as teletype > repair > in the Philadelphia - Washington DC area? > > Here are some pics, if they do any good. I can take more of targeted > locations. > http://vintagecomputer.net/teletype/asr33/2009/ > > Bill Degnan > >

16 years

seeking Sanyo MBC-3000 keyboard

by mcguire＠neurotica.com

I know this is a long shot, but does anyone here have a spare keyboard for a Sanyo MBC-3000 system? I have an opportunity to get one, but the keyboard is nowhere to be found. -Dave -- Dave McGuire Port Charlotte, FL

16 years

ASR 33 not horizontally spacing

by billdeg＠degnanco.com

I knocked over my previously working teletype. After locating all of the pieces, I carefully re-installed as much I could. The whole thing came apart, little pieces everywhere. The typewriter became detached from the keyboard. Pretty bad. I almost got it working, but there is one thing that I cannot seem to fix. The problem is that the print head is not moving horizontally along the line, it just says in place and types each character on top of itself. I do know that the teletype is sending data correctly from the keyboard to the computer through the serial cable, and the computer is receiving the commands. Output from the computer to the teletype is received and the print head itself is printing the correct characters. The problem is that the print head is not being moved to the right/horizontally. I can manually move the print head while in a operation (I can send a punch command to the printout paper for example) and if I time it just right I can space out the printed characters manually so I can see what has been sent from the computer. Can anyone help identify the fix? I would be willing to travel to someone with experience who repairs these (w/i 250 miles of Wilmington, Delaware), we can talk offline about service fees/trades. I have a lot of spare teletype and other parts. Worst case I guess I will offer buy another stock ASR 33 if anyone has one and this one can't be fixed. Is there such thing as teletype repair in the Philadelphia - Washington DC area? Here are some pics, if they do any good. I can take more of targeted locations. http://vintagecomputer.net/teletype/asr33/2009/ Bill Degnan

16 years

UDA-50 on Vax11/750

by iamvirtual＠gmail.com

On my Vax-11/750, I currently have an UDA-50 adapter connected to a R80 drive. I would like to get a more modern smaller drive. What drives can be used with the UDA-50 *AND* are supported under VMS 4.7 or 5.0? Thanks! --barrym

16 years

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test-drb October 2009