test-drb March 2003

test-drb@ccmp.vtda.org

314 participants
633 discussions

Just for the sake of asking... (was - RE: Trivia Question)

by Edward.Tillman＠valero.com

Gee! You musta worked at the same place, or one very like it. :) Ever seen any of those old parts floating around? Cheers! Ed San Antonio, Tx, USA -----Original Message----- From: Eric Smith [mailto:eric@brouhaha.com] Sent: Thursday, February 27, 2003 2:09 PM To: cctalk(a)classiccmp.org Subject: Re: Just for the sake of asking... (was - RE: Trivia Question) Edward Tillman writes: > It that a "real computer?" Of course it was! But they didn't so much have light pens as "light guns", right? And I can't think of too many other computers that had ashtrays built into the consoles.

21 years, 10 months

Calcomp incremental plotter

by djg＠drs-esg.com

I just got a Calcomp 563 incremental plotter. Does anybody have a manual that I could get a copy of or at least know the pinout of the connector and what the mate is (round multipin). Also does anybody know where I can get supplies such at the 30" sprocket feed paper rolls (still doing a web search but only found 36" so far) and the pen. The pen looks like a short ballpoint cartridge so hopefully I can cut a normal one down if I can't find an identical one. Thanks, David Gesswein http://www.pdp8.net/ -- Run an old computer with blinkenlights.

21 years, 10 months

DEC Server 300

by cb＠mythtech.net

>A DECserver 300 is about 19"x12"x4.5", weighs 10-15 lbs (guessing), and has >16 MMJ's (modified modular jack), an AUI (thickwire Ethernet), and a >10Base5 (coax Ethernet) connection on the rear. Mine has a "tabletop" >plastic shell on it with rubber feet under it, although many of these were >sold without the case and were rack mounted. My unit has a beige-ish plastic >shell over a gray metal box. Units without the plastic shell with be gray >and "gold" alodyne finished" aluminum. Ok, then I'm pretty sure it isn't in the dumpster. Something of this size/appearance would have caught my eye. If it had been along the lines of a PC desktop or tower case, I could see that I might have over looked it, but anything rack mount I think I would have noticed. But I think I may take another swing by tomorrow during the day. The place should be closed since Paramus has annoying Blue Laws and nothing is allowed to be open on a Sunday. So that should give me some daylight and peace to dig some more. >Please PLEASE keep the book - I am sure someone will want it as they are >MUCH harder to locate than the device itself! I would ask for it but I >already have both the DECserver and a manual. I don't think it is a complete manual. There are two, both still shrinkwrapped, but they are more like a booklet then a manual. Pretty small. I don't recall what exactly they said on them. I plan to sort thru the stuff Monday. There may be other manuals that I missed. There is TONS of junk paperwork in the dumpster, so locating manuals would be a chore. If it doesn't pretty much land in your hand, it is unlikely to be spotted. There is one person on the list who has right of first refusal on the DEC stuff. Once he has taken what he wants, if there is anything left, I'll offer it up to the list. -chris <http://www.mythtech.net>

21 years, 10 months

ASR-32 Usable as Terminal?

by jss＠subatomix.com

George R. Gonzalez wrote: > I'm in a bit of an embarrasing situation-- after getting this nice Model > 32 WU tty, tsting it out, finding out it works perfectly, I finally > realize -- I don't have any space for it! ... So I've reluctantly put it > up for auction on eBay. > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3010656618 I just realized, *after* bidding, that this TTY on eBay is a 32, not a 33. Oops. Since it uses baudot code instead of ASCII and has a rotary dialer on its CCU, is it useless as a terminal for a PDP-11? What would be required to make it useful for a terminal? I'm thinking that I should cancel my bid. I want a TTY solely to have a period terminal for my PDP-11/20. :-/ Yes, I have read the following in the "vital poop" thread: > Before you spend big bucks on ebay > ---------------------------------- > A Model 33 has a four-row keyboard (not including the space bar). > A Model 32 has a three-row keyboard (not including the space bar). > The 33 is ascii, and the 32 is baudot. > You cannot (prctically) modify a 32 into a 33. -- Jeffrey Sharp

21 years, 10 months

Sellam on Tech tv (again)

by n8uhn＠yahoo.com

Great show Sellam, I was really drooling over that apple 1 in the wooden case! hope to see more classic computers from your collection on tech tv. BTW any more info or updates an that very rare fps mini? Bill

21 years, 10 months

Sellam on TeeVee

by jpl15＠panix.com

Yo Sellam: good job on Screensavers this afternoon! A nice look at one of the last Apple 1s.... Cheerz John

21 years, 10 months

PDP-8/L: multiple failed 7440's date code 7005

by charlesmorris＠direcway.com

I have been busy debugging my PDP-8/L that last worked when stored in the barn around 1995. It is slowly coming back to life - still having problems with the core memory. I have noted one strange and recurrent problem. So far I have changed nine bad 7440's on a variety of modules, mostly core drivers (G221, G228) which have had their outputs stuck, usually high. All of them were labeled "DEC7440" with a date code of 7005! Currently lower page locations won't write the lower bits 5-11 (or at least return zeroes). The only common denominator for data bits 5-11 are at slot A09, where the MEM ENABLE 5-11 and MA ENABLE 5-11 lines are driven by, you guessed it, M617's featuring 7440's. Haven't verified this yet but it's a safe bet where at least some of the problem is! Has anyone else experienced this problem? Seems like the chip manufacturer must have had a few specks of dust in the fab room that day in Apr. 1970... -Charles

21 years, 10 months

LK250 Keyboard available

by geoffr＠zipcon.net

I'm pretty sure it's a LK250, this is a Dec Keyboard for PC's I've used it on AT class machines, but it's been gathering dust for a few years. (think LK201 for PeeCee) asking $30 plus S&H OBO (make me an offer, It can't hurt to ask)

21 years, 10 months

NEXT Keyboard question

by kenziem＠sympatico.ca

A friend has a slab but is missing the keyboard. Will a MAC keyboard also work? Does anyone have the pinout to let him rebuild one?

21 years, 10 months

Free DEC MINC-11 in NW England

by Lee.Davison＠merlincommunications.com

> I'm on it - I'm maybe 2 hours away from there so I can pick up, assuming a) > I can get it in the garage and b) my girlfriend doesn't kill me :) I'll send flowers. 8^)= Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

21 years, 10 months

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test-drb March 2003