test-drb March 2002

test-drb@ccmp.vtda.org

292 participants
932 discussions

by jcwren＠jcwren.com

My Otronas have FD-55B-01-U drives in them. I thought the drives were fried, since they wouldn't work on the Otrona nor on the PC, but in dinking around, I determined that on at least one drive (and probably the other), the head load solenoid is not pulling in. I see power being applied, but it only looks like +5V. I don't have schematics, and I'm not ready to risk wrecking the drives determining the following question: Should the solenoids pull in on +5 or +12? If I'm seeing +5, I suspect the solenoid driver transistor could be cooked. The solenoid coil is intact, as I'm seeing 44 ohms across it, out of circuit. In either case, I don't feel even the lightest twitch when it's supposed to pull in (and the jumper is in place, for load on motor select). Does anyone have any FD-55B (these are the 360K DS-DD 48 TPI) drives they'd like to part with, either to see an Otrona running, or in exchange for ye olde green stuffe? --John

22 years, 9 months

Old escala DPX 201

by hstaffa＠ix.netcom.com

I am trying to no evail find out what a honeywell bull escala dpx201 takes for memory ? Can anyone help

22 years, 9 months

Here's a link you all might like....

by dhquebbeman＠theestopinalgroup.com

> On Wed, 6 Mar 2002, Dave McGuire wrote: > > > Are you suggesting that the embassy is staffed by a bunch of > > dickheads? > > <playing straight man for Dave> > > You know who was the world's first computer operator? If you say Richard Head you will get one virtual nerf brick tossed in your direction immediately... 8-> -dq

22 years, 9 months

It's ALIVE!!! (Mark-8)

by bill_r＠inebraska.com

I bought one of the Mark-8 (8008) board sets from eBay 2 or 3 weeks ago, scrounged up all the parts, and set to work. It had non-plated-through holes so almost all the components had to be soldered on both sides of the board, and there were dozens of vias that had to be soldered in on each board as well. Did the smoke test with no CPU. No smoke, so I inserted the CPU, and it works! I found two problems on initial testing. There was a bad gate in a 7404 which was pulling down one of the data lines (replaced it), and I had missed a "top bus" jumper from the address/multiplex board to the memory board which allowed writes to memory (added a wire). That was it! It's pretty cool - just toggled in a test program and watched the lights blink as it looped over and over. Now I have to build a case and find a better power supply than my bench supply for permanent use, and then I start wire-wrapping an ELF! Whee!

22 years, 9 months

OpenSTEP for VMS

by csmith＠amdocs.com

Guys, I've just had a conversation with the guy who originally told me about this product, and he had this to say (posted with his permission, of course): -----Original Message----- From: Brass Christof [mailto:welcome@spam.not] Yup, I stated so and I still remember that it was advertised by *NeXT*! At that time I was already a VMS afficionado but new to NeXTSTEP and wondered on which systems the applications could be run. And voil? - VMS was listed. Unfortunately I'm not sure at the moment whether it was VAX or Alpha but I assume it was Alpha. And I still have the flyer around somewhere but I don't think you'll be able to buy/get it. Good luck anyway! ------------------------- He also mentioned that it may have been and "in progress" port with a set release date that he saw, and that it was only the libraries, etc, so that you could compile NeXT stuff on VMS, but not develop it. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 9 months

Shipping Big Iron & Rail Right-Of-Way Abandonment

by dhquebbeman＠theestopinalgroup.com

> Where has rail been ripped up? I've never heard of that > happening. Is it a national trend? Of course, I'm aware of it primarily through local examples, but the local newspapers have run articles about how this is happening throughout the nation.... the midwest probably has more miles ot track to rip up, though... Recently, efforts have been underway to try to reclaim some abandoned right-of-way and use it to create light rail (i.e. trolley) lines... Once upon a time, there was a B&O spur that ran in front of the home I lived in as a child (not far from here)... Dad and I would walk one direction as far as the floodwall, and the other direction usually only as far as a small drug store that sold hot mixed nuts. Remember hot mixed nuts, hot peanuts, etc? Just a short walk further (which we never did) you'd find the coal company who used to deliver the coal by which we used to heat that house (did a natural gas conversion in '64 just before we moved out). But all that line is not greeway, replete with joggers... :( -dq

22 years, 9 months

New aquisition: Texas Instruments TI 980A

by dhquebbeman＠theestopinalgroup.com

Ethan hollered: > Anybody else out there have one? My friend is going to keep digging in > the warehouse this month; he suspects he knows where some docs are, but > he's not sure. Nope... but bacmk in '74, IU borrowed one of these from the Chemistry department, and with the help of en electronic engineer/Chemist who worked there, developed a TTL-to-CDC 6000 Direct Channel interface in order to use the TI as a front-end processor for the 6600. It worked very well, and the computer center tried to get one budgeted, but in the long run, they ended up with a Modcomp II instead. However, due to its historical important in IU's computer center development, it's on my watch list. So if you get tired of it...

22 years, 9 months

info on Intel 86/330 computer?

by rigdonj＠cfl.rr.com

I just finished picking up four Intel Multibus computers. The labels on them say "sys 86/330" or "psyp 86/330". Is anyone familar with them? I searched Google but didn't find much except that they're not Y2K compatible. (surprise, surprise!) These have a six slot Multibus card rack inside with hard drive controller card with floppy drive daughter board, 256k memeory card, intel iSBC 86/30 CPU (8086) card with 8087 NDP daughterboard installed. They aslo have an 8" floppy drive and HAD an 8" hard drive (removed :-( Thery're in steel cases that measure about 14"w x 14"h x 20" deep and are painted a yellowish white color. Any info would be appreciated. Joe

22 years, 9 months

Thinning the heard...

by ajp166＠bellatlantic.net

Available for pickup only. -Pro350 in Floor stand case with Venix installed. No monitor/keyboard. Working system. -Pro380, untested believed working. No tube or keyboard. Due to size and weight, Pick up only. Location Framinham MA OR Hudson NH (real close to Nashua) for pick up. I'm limiting myself to only Qbus PDP-11s for my PDP-11 amusement and because the cards used are also Qbus VAX compatable. First come... Allison

22 years, 9 months

Suggestions for hauling Computer Garage from Beaverton, OR to Yates Center, KS?

by vcf＠vintage.org

We're now in the planning phases for moving Jim Willing's Computer Garage >from Oregon to Kansas. We're currently looking for the best equipment option for moving. Jim says he probably needs a 24 foot truck. He's currently looking at U-Haul, which is always a cheap solution, but he's stuck right now hassling with them over some issues from a prior moves where the trucks broke down (U-Haul trucks are deathtraps on wheels). There are a few other truck rental places we're going to try to get quotes >from (Ryder is asking around $1,500, we haven't checked Budget or Penske yet), but I was wondering if anyone had any other suggestions? Jim's original plan was to load the Computer Garage contents into the truck and then tow his Suburban from the truck. I am suggesting that he rent or even buy a big trailer and use the Suburban to haul the trailer. Jim is going to ask some of these places if they will rent trailers one way (I don't see why not). I think my suggestion to buy a trailer would be cool if he can't since it may be cheaper than renting a truck, and he can always use it for other stuff, or sell it when he gets back to Kansas. Any suggestions are appreciated. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

22 years, 9 months

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test-drb March 2002