test-drb

test-drb@ccmp.vtda.org

101090 discussions

by mgregory＠vantageresearch.com

Hi Pete, I can't help with your question, but you may want to post it on comp.sys.ibm.ps2.hardware. There are a lot of extremely knowledgeable (if not fanatical) MCA enthusiasts there (notably Peter Wendt, Louis Ohland, and Bruce Lane) and the signal to noise ratio is high. The group helped me a lot in reviving a PS/2 Model 8595 server last year. Regards, Mark "Now if only I could find some 1 by 4 static column ZIP DRAMs" Gregory -----Original Message----- From: Peter Pachla <peter.pachla(a)wintermute.org.uk> To: Classic Computer <classiccmp(a)classiccmp.org> Date: Thursday, April 13, 2000 1:36 PM Subject: CPU upgrades, pt. II >Anyone come across an "XTEND MICROPRODUCTS" processor upgrade card for MCA >machines? > >I've found one inside my PS/2 Model 50, which I was previously unable to >identify as the markings on the PCBs are hidden inside the "sandwich" >IYKWIM. > >Anyway, it appears to replace the onboard '286(?) with a '486SLC (no real >clues as to clock speed, but could be 25MHz) and has a socket next to the >processor which I'm assuming is for a math co-processor? > >Would I be correct in assuming that the system will not start up if the >72-pin SIMM sockets on the upgrade board are empty....I've never gotten very >far with this machine as I don't have any 72-pin SIMMs to try in it? > > > TTFN - Pete. > >-- >Hardware & Software Engineer. Sound Engineer. >Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) > >peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk >-- > > >

25 years, 8 months

CPU upgrades, pt. II

by peter.pachla＠wintermute.org.uk

Anyone come across an "XTEND MICROPRODUCTS" processor upgrade card for MCA machines? I've found one inside my PS/2 Model 50, which I was previously unable to identify as the markings on the PCBs are hidden inside the "sandwich" IYKWIM. Anyway, it appears to replace the onboard '286(?) with a '486SLC (no real clues as to clock speed, but could be 25MHz) and has a socket next to the processor which I'm assuming is for a math co-processor? Would I be correct in assuming that the system will not start up if the 72-pin SIMM sockets on the upgrade board are empty....I've never gotten very far with this machine as I don't have any 72-pin SIMMs to try in it? TTFN - Pete. -- Hardware & Software Engineer. Sound Engineer. Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk --

25 years, 8 months

New stuff and lots of Digital help

by dogas＠leading.net

Hi all, I knew that hanging aound you nuts wouldn't be good for my computer collecting dementia. ( reference http://users.leading.net/~dogas/COMPOSITE.jpg ) Until recently, I've kinda resisted adding Dec equipment due to storage concerns. Until recently... So, here's my digital stuff... http://users.leading.net/~dogas/classiccmp/digital/digital.htm ...that I can use some help with... 1. I've got an 11/05 missing a KD-11B processor board #1 (M7260) 2. I have no space currently for the 11/44 and MicroVax 3600 and will entertain any 'hosting' options 3. My MicroVax II is booting into Ultrix 4.5 and I'd rather learn VMS 4. I'm need a mouse and monitor cable for a VaxStation 3100. 5. One of my Heathkit H-27 floppies is broken and I also need an os for it. Any suggentions for any of the above problems would be appreciated. In the meantime, back to the classiccmp archives. Hey, I also found two Honeywell 316 minicomputers too, check out... http://users.leading.net/~dogas/classiccmp/h316/h316.htm Cheers. - Mike: dogas(a)leading.net

25 years, 8 months

HP Apollo/9000s

by peter.pachla＠wintermute.org.uk

Hi Sean, > You might want to take a look at http://parisc.workstations.org.... Thanks for that, someone else over in the Apollo newsgroup suggested that site too - and very interesting it is too. TTFN - Pete. -- Hardware & Software Engineer. Sound Engineer. Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk --

25 years, 8 months

Lubing Shugart 800,801's?

by allisonp＠world.std.com

First item,, I've seen lots of 800/810s with lube on the leadscrew from the factory. Two, carb cleaner is toxic and usually bad for most plastics. My cut is pull the lead screw/stepper and properly clean it and lube very lightly with good molly grease. >that is available to you, then lubing it with a LIGHT coat of (one drop for >every three drives) of WD40, then adding about 1/4 tsp of moly-disulfide, WD40 is penetrant and evaporates very quicly leaving mostly nothing. After your done cleaning any know good disk will suffice for alignment. I've even eyeballed them in. the tracks are really quite wide! Allison

25 years, 8 months

Complete List Archives Available!

by af-list＠wfi-inc.com

Hi, I know Kevan indicated recently that he was in the process of rebuilding his archives, and I'm not sure of the current status of that, but in the meantime I've put up all archives since March of 1997 (start of the list) at http://www.retrobytes.org. I can't express how many times his archives saved me and I just wanted to get that information back up for the public as soon as possible. I was a little shocked when I sent the U Washington Listproc server an "index" command and found that they still had all of the list archives available! Another thing that amazed me was how *prolific* this list has been in the past. One month (April 1999) was just shy of *3000* messages! I haven't totaled everything, but I would easily guess that there's upwards of 50,000 messages for the last three years. What an unbelievable technical resource! I think there was a comment about the volume of messages that Tony Duell posts; if you have any doubt, look through any of the months by Author to see just *how much* he contributes here. One of the things I'm considering is making a CD-rom distribution of the list archives available to list members; any interest? It would allow for faster searching and accessability to the archives for someone working on a classic system not in the immediate vicinity of an internettable computer. I could make it available as an ISO image download by individual request, or burn CD's here for the cost of media/shipping. I still need to add the search capability, so I'm seriously looking for someone with experience setting up Glimpse or something similar. Also, any ideas for setting this up for a CD version would be appreciated. Cheers, Aaron Special thanks to Hans Franke for supplying me with his saved archives, before I knew about UWash's listproc archive...

25 years, 8 months

A New Find

by jrkeys＠concentric.net

The other day I was given a Sym model 1 in a custom case of black metal with wooden sides and a built in keyboard sold by Synertek. There small wooden door on top that lifts off to view the on board LED and KB. This system has been upgraded with extra memory and other features. He also gave all the documentation for it and some newsletters from an old Sym computer club that used to be at Honeywell. The board is dated 1978 with SN 3433. It will be a great addition to my collection and I hope to fire it up soon.

25 years, 8 months

Looking for: Ai Cybernetic Systems Model 1000 Speech Synthesizer.

by ss＠allegro.com

Hi, I'm looking to find a particular S-100 bus speech synthesizer: Ai Cybernetic Systems Model 1000 Speech Synthesizer. (Photo, info at: http://web.inter.nl.net/hcc/davies/mvaicyb.html) I'm just sort of interested in seeing one, because a friend designed/built them. thanks, Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler

25 years, 8 months

IP11 test manual wanted

by hofmanwb＠worldonline.nl

I have IP11 test programs on RX01 floppy, but where and how do I get the manual for these tests? I live in Arnhem, The Netherlands Thanks in advance, Wim

25 years, 8 months

ATTN: Will Jennings

by jpl15＠netcom.com

My private e-mail seems not to be reaching you either... you might be getting what you're paying for from your ISP. :) Obclassiccmp: this concerns a computer rescue... it's OT. Cheers John

25 years, 8 months

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