test-drb December 1999

test-drb@ccmp.vtda.org

186 participants
742 discussions

PDP-8/L and TTY stuff (was Re: TTY and current loop questions)

by ethan_dicks＠yahoo.com

--- Christian Fandt <cfandt(a)netsync.net> wrote: > The above lube info should get you started with bringing life back into > your 33. > > Regards, Chris As of today, it's not just mine that needs work... a long-time geek friend of mine was at our usual Friday Geek Chinese Lunch (17 years in the same restaurant!). I asked him about TTYs. I mentioned that he has four of various models in various states and wants to end up with one cleaned up unit and one set of docs. He has a couple KSR-33s, one KO-33(?) and one ASR-33. Some are missing covers, most are missing pedestals, none are fully up and running. The plan is to help him get one good set going and then I get to haul away the remainders as parts (unless I can get something working out of what's left). Maybe I'll go over to his house and learn on *his* equipment, then go home and work on my own. ;-) Nah... I'm too impatient to wait that long... I _really_ want to get an LT-33 up and running for my -8s. -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com

24 years, 7 months

PCjr Error Codes

by swolfe1＠mail.gcnet.net

I just got a PCjr, with a Quadram Floppy drive extension, and a parallel sidecar... It worked fine for a couple days, and then I booted it up and it checked up to 128k, and then reported Error A... does anyone have an error code list for the PCjr?

24 years, 7 months

IBM XT available (fwd)

by dpeschel＠u.washington.edu

I'm forwarding this for a non-subscriber. Remember to reply to the original sender (paulkruse(a)juno.com). > Here's someone wanting to find a new home for an IBM PC/XT. Please reply > to the original sender. > > Reply-to: paulkruse(a)juno.com > > > ---------- Forwarded message ---------- > Date: Sun, 12 Dec 1999 01:23:04 -0800 > From: Paul Kruse <paulkruse(a)earthlink.net> > Subject: I would like to donate IBM PC/XT > > I have an IBM XT, keyboard & monitor, in good working condition that is > not being used. > > Please reply to paulkruse(a)juno.com as I may not carry this email address > for long.

24 years, 7 months

TTY and current loop questions (was Re: 20mA cabling questions)

by ethan_dicks＠yahoo.com

--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: > > > > > > The PDP-8/L restoration continues. I have two devices to attach to my -8/L > > for testing - a VT220 (all have 20mA current-loop connectors) and an > > ASR-33. > > OK, first thing to do is to clean and oil (correctly!) that ASR33. If > parts are sticking, there's a reason for it, either no oil or old, > gummed-up oil. Carrying on running it like this will cause wear and/or > damage. I have intentionally not run the TTY for more than a few lines just for this reason. > Do you have the 3 grey books for the ASR33? Volume 1 of the maintenance > manual covers lubrication. If I do, it's long buried. What's the synopsis for the area around the print hammer/type cylinder? Some letters print OK, some don't. The ones that don't do OK for the first one, but as I said, I have to manually press the cylinder back down to its locking position. How many types/grades of lubricants are there for a proper lube job on a TTY? > Reader run is another loop (and it's not part of the 'standard' loop > setup). Right. I located the conversion manual in the back of some 11/20 docs - how to turn a factory-fresh TTY into a DEC-modified ASR-33. > According to a PDP8/e printset, the pinout of the 8-pin mate-n-lock... > I seem to remember that's 'standard' on DEC devices. You may well need > the equiavlent of a null-modem cable to link a VT220 to the card (swap > (2,3) and (5,7)). That's the kind of thing I was looking for. > A word of warning. THere are several versions of the COM8116. The > 'standard' one, as used by Radio Shack in the TRS-80 uses a 5.0688MHz > clock. I have the standard one. We used it in an optional modem eliminator option for our sync serial boards. I have the xtals, too. Thanks for all the good info, Tony. Now if I could only locate the box of 20mA cables in the attic... -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com

24 years, 7 months

Intro msg: Teraks, emulators, reviving cassette data

by jfoust＠threedee.com

Why, I thought I'd get a few replies about my Terak computer collection, as described in my intro message on 11/18. Anyone out there have any experience with these? - John www.threedee.com/jcm

24 years, 7 months

PDP-8/L and TTY stuff (was Re: TTY and current loop questions)

by ethan_dicks＠yahoo.com

--- CLASSICCMP(a)trailing-edge.com wrote: > >One thing that I did mention and I'll mention again is that my hammer face > >is not original - I stuck on a rubber sticky foot and I suspect that it is > >part of the problem. I read here recently that someone has had luck with > >carved pink pearl erasers, but I haven't tried that. > > I think that was me. The erasers aren't nearly as durable as the > original heavy rubber (after all, erasers *are* designed to wear away!) > hammer face, but they are easily carved. I just ordered some replacement rubber hammer faces from Western Numeric Control along with some oiled paper tape and a couple of paper rolls. I don't have an exact total, but I just dropped about a hundred bucks including shipping. Fortunately for my pocket book, I have several boxes of dry fan-fold tape for my high-speed punch. I just checked the box - some black, some grey and one box of genuine "PDP" papertape from DEC. Now back to cleaning and lubrication. -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com

24 years, 7 months

PDP-8/L and TTY stuff (was Re: TTY and current loop questions)

by ethan_dicks＠yahoo.com

--- Chuck McManis <cmcmanis(a)mcmanis.com> wrote: > Of course Western Numerical control sells replacement pads for $3-$4 and > they work as designed so why would you even want to try a kludge? > (www.westncinc.com IIRC) Thanks for the tip. I knew someone sold them. I'll be placing an order today. I need some paper rolls anyway. I'm down to a couple of very oxidized and brittle ones. I might as well order a couple of rolls of oiled tape. All I have right now is the fanfold stuff for my PC8I (I know it works, but I want some rolled stuff that won't have creases to catch in the TTY reader). -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com

24 years, 7 months

Commodore computer equipment in pristine condition

by SUPRDAVE＠aol.com

In a message dated Fri, 17 Dec 1999 8:58:00 AM Eastern Standard Time, Jeff Salzman <relayer(a)dotplanet.com> writes: > I have the following items for auction on eBay. I'm thinning out my collection > of extras. These items are VERY well taken care of and include the original > manuals (also in great shape). The auctions end Sunday evening, Dec 19. > > Commodore 64 > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=221651946 > > Commodore 1541, white tone > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=221617803 > > Commodore 1802 Monitor > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=221646174 > > Seikosha SP-1000VC Dot Matrix Printer > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=221605811 > > If you are looking for other Commodore items, let me know. I may have a spare that I can part with. > > Jeff Salzman Well, if you DO have more commodore items, why dont you offer them to members of the group FIRST, before selling on epay?? oh, i get it...more money that way.

24 years, 7 months

More eBay rambling, and the human factor

by SeaMasterZ＠aol.com

In a message dated 12/16/99 6:42:34 PM Eastern Standard Time, mikeford(a)socal.rr.com writes: << BTW the advice given freely on this list is beyond price, $10 would be an insult, $500 is more like what some of its worth. >> You know, that made me think about the gigabytes of human knowledge that is the engine behind this list, its stunning if you think about it, the "man" hours (women hours too, knuckle dragging Neanderthal here :o)~ involved in acquiring the knowledge and the collective pool that it represents ... mind boggling. And so, yet another question, this time on a truly ancient computer ... have any studies been done on estimating the speed and capacity of the human brain? I'm strictly a commodore 64, but there are some pentium III types out there ... as usual, just curious, thanks gang. Ray Cook

24 years, 7 months

PDP-8/L and TTY stuff (was Re: TTY and current loop questions)

by CLASSICCMP＠trailing-edge.com

>One thing that I did mention and I'll mention again is that my hammer face >is not original - I stuck on a rubber sticky foot and I suspect that it is >part of the problem. I read here recently that someone has had luck with >carved pink pearl erasers, but I haven't tried that. I think that was me. The erasers aren't nearly as durable as the original heavy rubber (after all, erasers *are* designed to wear away!) hammer face, but they are easily carved. I never saw any troubles in my ASR33 related to grunge wearing off the carved eraser, but then again I only ran it for a few hundred hours :-). -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

24 years, 7 months

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test-drb December 1999