test-drb July 2001

test-drb@ccmp.vtda.org

301 participants
824 discussions

Adapting serial mice to quadrature systems

by optimus＠canit.se

There's been some talk before about adapting those blasted serial mice which are so common on the PC (all current PC mouses are serial, whether they connect to an actual RS232 port or to a "PS/2" connector) to a more sensible quadrature system. Was it Tony or Pete who talked about making a PIC based adaptor? Well, here's your chance, according to the Aminet daily: ps2m.lha hard/hack 191K+Ultimate Amiga PS/2 WheelMouseController ps2m_example.lha hard/hack 150K+PS/2 WheelMouseController - PCB photos And look here what turned up today, in relation to the recent LJ III thread: HP_LaserjetIII.lha text/print 14K+Laserjet III Workbench Driver v1.2 -- En ligne avec Thor 2.6a.

23 years, 5 months

Anyone with info on Cipher C8803 tape drives?

by dhquebbeman＠theestopinalgroup.com

> On 12 Jul, Chad Fernandez wrote: > > > It better be Pertec and not SCSI! > SCSI is one 50 pin connector, Pertec uses two 50 pin connectors. > > > If it were SCSI that would mean I just gave away a Qbus SCSI card.... > > I think I would shoot myself :-) > Happy suicide! ;-) > > > I think the card was an Emulex UC07, or TC07, or something like that.... > > I don't know :-) > field-guide.txt: > UC07D Q Emulex single SCSI bus adaptor. Chad- Bummer, man! -dq

23 years, 5 months

All this PLATO talk got me going...

by claudew＠videotron.ca

Hi Well all this Plato talk has got me excited... I am still looking for screen shot of my favorite stuff on the system like Dogfight and Airfight and if I would find some references to some of the stuff I wrote (like my Space Attack game) I would go nuts. I have decided to contact some people here at the Quebec network of Universities in hope on finding some Plato stuff....The Plato system was used a lot by universites in Quebec in the early 80s. Thats when I spent most of my time on the system...too much time...writing stuff in tutor....also might enjoy finding the plato terminal emulator for PC (I know it existed because I used it...) and maybe some micro-tutor/plato stuff....even if I never used micro-plato/tutor... I might even find an old terminal in one of the college basements somewhere maybe...or even listings....I actually had the whole Airfight listing here at one point and was gonna translate it to french and abandonned the project...listing went into the garbage...like a lot of the stuff I wrote when I was younger...now I regret.... Even had some CDC/Plato docs that I threw out long time ago...hey, I was younger.... Here is some stuff I found...about micro plato... Correct. The CDC-110 Micro Plato Station consisted of a CDC IST-2 or IST-3 terminal connected via a proprietary bus to a box containing its own Z80 and an 8" DSDD floppy; the IST (containing its own 64K RAM and Z80) acted as a terminal, while the actual CP/M crunching took place on the Z80 within the disk-drive cabinet. I worked for many years at the City Colleges of Chicago, which used the PLATO computers at the University of Illinois (and still uses PLATO's descendent, NovaNET). During the '80s, we had a couple hundred IST terminals, most of which were "naked" and connected only to the PLATO system, but some of which were CDC-110s with disk drives and ran mostly Micro-TORTURE :-) lessons. The Micro-PLATO stuff didn't last long, mostly due to the hassle of sucking down a disk's worth of lessons from the central system over a 1200-bps circuit. Don Piven - Chicago IL Claude http://www.members.tripod.com/computer_collector or http://computer_collector.tripod.com

23 years, 5 months

X-10 (was Re: controlling power)

by lance＠costanzo.net

At 03:30 AM 7/9/01 -0400, you wrote: >On July 9, Neil Cherry wrote: >> X10 was marketed to Radio Shack in 1978 and the first review of it was > X10 was originally marketed by BSR, if memory serves. According to this guy, who worked with X10 from the early days, RS was the 1st US market. BSR came later. http://www.hometoys.com/htinews/oct99/articles/rye/rye.htm Some interesting bits on development and manufacturing, too.

23 years, 5 months

Historically interesting (?) 'scope - and the winner is....

by r.stek＠snet.net

Well, Steve Ciarcia's Heathkit IO-105 has been won. It was a tough choice amongst the many and varied entries. I lost a little sleep worrying about whether or not I had made the right choice. But to give everyone who entered this contest their due, let me list the runners up before announcing the BIG winner: First and fastest offer - NEC V-20 from Ethan Dicks Best CP/M related offer - NEC V-20 from Ethan Dicks Best 8080-code compatible offer - NEC V-20 from Ethan Dicks Best hardware offer (general) - NEC V-20 from Ethan Dicks Best hardware offer (CPU) - NEC V-20 from Ethan Dicks Best computer related item ever mentioned in a computer magazine - NEC V-20 from Ethan Dicks Last offer - NEC V-20 from Ethan Dicks ... And the BIG winner of this fabulous fuse-blowing marvel is - NEC V-20 from Ethan Dicks Congratulations, Ethan! This 'scope is now yours and the faster I can get it out of my basement, the better. Bob Stek Saver of Lost Sols

23 years, 5 months

Fw: [GreenKeys] PDP-11

by geoffrob＠stmarks.pp.catholic.edu.au

Forwarded from another list, contact originator direct please. ----- Original Message ----- From: "Bill Henry" <ghenry(a)halcomm.com> To: <Greenkeys(a)qth.net> Sent: Friday, July 13, 2001 6:58 AM Subject: [GreenKeys] PDP-11 > Anyone have the hots for a PDP-11/30 - circa 1980? It's sitting here in > Urbana, IL. Worked last time we used it - maybe 10 years ago. Includes > CRT terminal, 3 hard disk drives (the BIG drives) 2 floppy drives (also > BIG), 3/4 height DEC rack (about 4 1/2 ft.). RSX-11 Operating System, > Runoff Word Processor, VERY early Basic. > > Call me if you're serious. The price is right - and no charge for the dust. > > Bill Henry > HAL Communications Corp. > 367-7373 > ---------------------------------------------------------------------- ---------------------- > George W. (Bill) Henry Internet: ghenry(a)halcomm.com > President WWW: halcomm.com > HAL Communications Corp. Phone: 217-367-7373 > 1201 W. Kenyon Rd. FAX: 217-367-1701 > Urbana, Illinois 61801 > ---------------------------------------------------------------------- ---------------------- > > > ---- > Submissions: greenkeys(a)qth.net > >

23 years, 5 months

off topic stuff and flame wars

by brian＠quarterbyte.com

Up to a point I find the off-topic stuff kind of funny... it's like a small town where all the old retired guys sit on the front porch of the old hardware store and BS all day. But when the stort of stuff we're seeing lately shows up, it's no longer charming. The types who engage in the invective we're seeing thrive on attention. Argument and returned insults are exactly what they're seeking. The response should be cold silence. Don't respond to it, don't argue with them, don't acknowledge their presence on the porch until they act like adults. That's my two bits worth. Brian

23 years, 5 months

Plato terminal

by pete＠dunnington.u-net.com

On Jul 12, 15:52, McFadden, Mike wrote: > Sridhar wrote > >How do you find out the exact number of feet you're out from the CO? > I think you call up the telco and ask them the question and then they run > some test and report back to you. It's a time-domain reflectometer test. Basically you send a narrow pulse down the cable and look for a spike coming back. You can do it with a pulse generator and an oscilloscope. Trigger the scope from the pulse generator, and display the voltage on the cable. Any discontinuity in the cable will show up as a bump in the trace (a discontinuity might be an imperfect splice, or a sharp bend in a coaxial or twisted pair cable which crushes the cable and distorts the geometry), and unless the end is perfectly terminated, it will cause a reflection which will show up as a spike. Then if you know the cable characteristics, specifically the velocity factor, measuring the time between the pulse and the bumps or spikes allows you to work out how far down the cable they are. The same technique is used for optical fibres. A couple of weeks ago, we had a bunch of about 30 spliced (previously they were connected via two sets of patch panels). The guy who did the splices produced a very fancy optical TDR, which showed the graphs of the returns as well as the times and distances. He was even able to point out where there were patch panels on the far end and estimate how long the attached patch leads were. -- Pete Peter Turnbull Network Manager University of York

23 years, 5 months

Jupiter Ace available (for about $125?)

by sieler＠allegro.com

Hi, I received email from someone offering me a nice condition Jupiter Ace (PAL output), for about US$125. The machine may be in Australia. I have an Ace ... although I wouldn't mind a spare, I don't want one for that much money just now :) If any collector is interested in it, please email me and I'll forward your mail to the guy with the computer. thanks, Stan Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler

23 years, 5 months

MicroVAX equipment

by mcguire＠neurotica.com

On July 12, Zane H. Healy wrote: > > One man's "classic computer" is another organization's "production > > hardware". > > I totally understand as I know someone that pays real money for them as > well, but that doesn't mean that *I* want to mess with a RA81! My knees are > worth more than the going rate! Oh no, of course not...I wouldn't suggest otherwise. Those buzzards are *painful* to move. -Dave McGuire

23 years, 5 months

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test-drb July 2001