test-drb December 2001

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Anyone have a MicroVax II in a BA123 available?

by cmcmanis＠mcmanis.com

I'm in Sunnyvale, and would part with one. --Chuck

22 years, 10 months

Dataproducts printer inteface

by steve＠airborn.com.au

Sorry for the repost... but has anyone heard of the (old) Dataproducts printer inteface? It was also called the Line printer interface, and was used on other Brands besides just Dataproducts. Basically I know it uses differential signals - otherwise similar to centronics - but I would like to find out some details. I have the Pinout: http://www.hardwarebook.net/connector/parallel/dataproductsdsub50.html I would really like to find a description of the "Demand" signal and the polarity of "Strobe" and "OnLine" I would like to know the levels (I presume they are TTL) If anyone can help me out, perhaps I can respond in kind by giving them the final result - a circuit for a Centronics-->Dataproducts interface. steve(a)airborn.com.au

22 years, 10 months

Parting out on eBay

by mcguire＠neurotica.com

On December 4, Tony Eros wrote: > Last month someone had an Industrial-8 two rack system with TU56, RK05, > high-speed paper tape reader/punch listed on eBay. $1000 was evidently not > enough, because now he appears to be selling off the bits. There's > currently a listing for "PDP 8 Industrial DEC chassis and front panel" with > about three days to go. > > Kind of a bummer. Lynch mob time. -Dave -- Dave McGuire St. Petersburg, FL

22 years, 10 months

More E-Bay Insanity?

by mcguire＠neurotica.com

On December 4, Tony Duell wrote: > Presumably the number of people still using 8" drives who don't know how > to clean the heads 'by hand' is even less than the number of people using > 5.25" drives who don't know that. Which means that apart from collectors, > there may be very few people who actaully need an 8" cleaning kit... ...which further suggests that, of the people who would want an 8" cleaning kit, a higher percentage of them are collectors. Get those 8" kits on eBay, and make a fortune! ;) [sorry, couldn't resist..] Say, anybody got a spare top lid for a 10.5" 11/34 CPU chassis? I could actually use two if anybody has a pile o' parts.. -Dave -- Dave McGuire St. Petersburg, FL

22 years, 10 months

More E-Bay Insanity?

by csmith＠amdocs.com

> -----Original Message----- > From: Dave McGuire [mailto:mcguire@neurotica.com] > Value is in the eye of the beholder, man. Why is it automatically > "insane" when someone else views omething as being more valuable than > we do? > The resale value of the stuff we hack on is going up, and we have to > learn to deal with it. It has been for some time. People are buying > it at these prices, and it's not just one or two people. Let them > spend their money...if they're happy with their purchase, what's wrong > with it? > Further, one mustn't lose sight of the fact that different things > are more readily available in different geographic areas than in > others. Just because there are fifty AppleIIs at the corner yard sale > in your neighborhood doesn't mean there are fifty of them at EVERY > corner yard sale. ... ok, I understand this perfectly (believe me!) but this is a head cleaning kit, and anyone who's still got a 5.25" disk likely could take it apart and clean the head without the kit. Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 10 months

More E-Bay Insanity?

by pete＠dunnington.u-net.com

On Dec 3, 15:38, Douglas Quebbeman wrote: > > Have 5.25 inch floppy drive cleaning kits > become unobtainium, or only for the clueless: > > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1305651479 Wow, I wonder what my 8" ones are worth ;-) -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

TK50-GA external SCSI tape unit + Microvax 3100 Desktop

by pete＠dunnington.u-net.com

On Dec 4, 0:39, Carlini, Antonio wrote: > > pete(a)dunnington.u-net.com wrote: > > > >> (Oh, what's the 50 pin HD-DB type connector? line-printer?) > > > >Good question :-) > > After my earlier miscounting I'd better check > carefully :-0 but if this is labelled B1 (and > there is another one labelled B2 on *some* > MicroVAX 3100 Model 20s) and it is three > rows of pins ... then it is a synchronous > communications connector. The same > connector was used on several other > synch comms options (DEMSA, DECnis, > DSV11, DSB32, DMB32 and DSF32). > The interface presented (X.21, V.35, > RS422, RS423) was determined by the > stub cable you plugged in. Thanks for that -- that's helpful. I might even have a use for it :-) -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

Houston Classic Computers was {Off-Topic: Re: Anyone have a MicroVax II in a BA123 available?}

by csmith＠amdocs.com

> -----Original Message----- > From: David Williams [mailto:dlw@trailingedge.com] > I too would be interested in getting together with other > collectors in > the Houston area. Always like to meet others in the area, visit or > hit collecting spots. I know there are a few more on the list. Any > others interested? Houston's starting to sound like a cool place to live ;) In all seriousness, though, maybe local user groups or something more loosely knit are a good idea. Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 10 months

Parting out on eBay

by dhquebbeman＠theestopinalgroup.com

> On December 4, Tony Eros wrote: > > Last month someone had an Industrial-8 two rack system with TU56, RK05, > > high-speed paper tape reader/punch listed on eBay. $1000 was evidently not > > enough, because now he appears to be selling off the bits. There's > > currently a listing for "PDP 8 Industrial DEC chassis and front panel" with > > about three days to go. > > > > Kind of a bummer. > > Lynch mob time. OTOH, I know someone hoping to pick up the chassis/front panel (not me)... -dq

22 years, 10 months

VERY LONG: Latest S-100 Haul

by mythtech＠Mac.com

>Thanks to a VERY generous man, located about an hour's drive from me, I have >a boatload of CompuPro S-100 stuff, 8" floppy drives, manuals, software, >etc. <snip> YIKES Batman... Nice score! -chris <http://www.mythtech.net>

22 years, 10 months

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test-drb December 2001