test-drb February 2003

test-drb@ccmp.vtda.org

337 participants
780 discussions

by jss＠subatomix.com

My PDP-11/20 includes a M7251 KG11-A board, which appears to be a CRC helper option for communications software. I've been able to find some diagnostic code listings for it, but no manuals. Does anyone out there have any manuals for it, either scanned or dead-tree? If I can't download it, then I would like to either buy-for-cheap it or borrow-and-copy it. Thanks! -- Jeffrey Sharp

21 years, 10 months

What computer is this front panel for?

by n8uhn＠yahoo.com

Wow, thats a tough one. i agree with Sellam, it does look like a four phase panel. but - fps did not use a flat rack panel - they used a bezel and the board bolted to it. i wonder if it is fps and perhaps an iv/60,70 or 80 or an early prototype of one of them. if the seller looked at the pcb for a name - that may end our mystery - fps screened "fps","four phase systems inc" or "motorola information systems" or the pcb. motorola information systems bought out fps and made some boards for the fps systems. Bill Message: 40 Date: Fri, 14 Feb 2003 17:31:54 -0800 (PST) From: Vintage Computer Festival <vcf(a)siconic.com> To: <cctalk(a)classiccmp.org> Subject: Re: What computer is this front panel for? Reply-To: cctech(a)classiccmp.org On Fri, 14 Feb 2003, Kevin Schoedel wrote: > > (0) It's got 24 bits, or maybe 18 + 6 if you look closely. > > I think 24, since the numbers don't restart. Bit 0 is at the right, > which might rule out some machines. > > I'm pretty sure the first word at the top is "DISPLAY"; the next > might be "REGISTER", but I'm not certain. I think the word that > labels bits 18-21 might be "INSTRUCTION". Can anyone think of a > machine with a 4-bit opcode and 18-bit address? I think the next > word (first of two labelling 0-17) is the same. Now that I've looked at it more, it almost looks like a Four Phase Systems front panel. It can't remember now, but I believe it was either a 16- or 18-bit machine (18-bits would make sense with regards to these front panels). -- Sellam Ismail Vintage Computer Festival

21 years, 10 months

What computer is this front panel for?

by aek＠spies.com

i wonder if it is fps and perhaps an iv/60,70 or 80 I have a IV/70 reference manual, and the front panel is quite different. Four Phase also numbered their bits in big-endian order. I'm still guessing they're for Harris H-series.

21 years, 10 months

IBM Displaywriter etc

by dancohoe＠oxford.net

I ran across a number of Displaywriter cpu's and keyboards on the weekend as well as a bunch of IBM 4972 terminals. I think I may find Series/1 parts in further searching through this interesting site. I didn't know what the floppy drives for the Displaywriters looked like until I checked with Google after coming home. I believe I saw some of them as well. I also picked up some manuals and diagnostic diskettes for the IBM Office System 6. Anybody need them? The actual System 6 is there but has been out in the rain too long to be of much interest unless someone needs something specific (and waterproof) from it. Quite a lot of other stuff as well, which I'll list as, if, and when I get to it. If anyone is interested in any of these things, I'll try to get them put away in safe storage. I'd be willing to hold on to them until Dayton. The owner is very reasonable with his selling prices. regards, Dan Cohoe

21 years, 10 months

NeXTStation Color monitor cable pinout needed

by ian_primus＠yahoo.com

Thanks to your help, I now know what I need - I need the three headed cable with two 13W3 connectors and one DB-19. ( this thing - http://www.obsoletecomputermuseum.org/nextcolor/monitor_cable.jpg ) I have scoured the internet looking for the pinout of this cable, but to no avail. I did find some information about the monochrome slabs, but it doesn't help me very much. There doesn't seem to be much out there about the color NeXTStations at all. Anyway, if anyone has the pinout of that monitor cable, it would be much appreciated. It shouldn't be too hard to add the extra connector to the old Sun monitor cable I already have. All the pins on the Sun cable do go straight through, and there are wires for all of them, I checked with a multimeter. Thanks! Ian Primus ian_primus(a)yahoo.com

21 years, 10 months

PDP-8 front panel switches needed

by julesrichardsonuk＠yahoo.co.uk

> Does anyone know of a source for (or have) enough PDP-8 (the original > "straight") front panel switches to fill in a front panel? I am working > on a replica of the PDP-8 (non-functional) for a museum exhibit, and need > to find either a source for switches or some that look close enough. In the interests of keeping viable machines still functioning, and given that this is for a non-functional museum display, it might be worth looking into actually making something - painted wood, vacuum-formed plastic, whatever. Just a thought. I'm not a DEC person (don't have the space!) and these switches might be common as muck for all I know. But I'd hate to think parts were being used on a static display that could be used to keep hardware running elsewhere... cheers Jules Everything you'll ever need on one web page >from News and Sport to Email and Music Charts http://uk.my.yahoo.com

21 years, 10 months

vaxstation 3000?

by acme＠ao.net

Okay, I'll bite. Questions (from a non-DEC mperson): Where is it? Where can I find information about the VS3000? Google pointed me to tons of sites regarding the 3100, 2000, 4000, etc., but nothing specific to the 3000. Why? Is the 3000 a dog? To the classiccmp DEC-heads: is the 3000 a good starting point for someone who's curious about VAXen? If not, why not, and what would be a better place to begin? TIA -- Glen Goodwin Orlando, FL USA > Anybody have any interest in a VaxStation 3000? > Looks clean, no monitor or kbd.

21 years, 10 months

Berg Connectors

by chd_1＠nktelco.net

Is there a replacement for the Berg connectors? I am talking about the 100mil spacing, dual inline connectors that had individually insertable, crimp contacts. The AMP MT connectors look like a replacement. Does anybody have experience with this? I am working on an DEC RX01/RX02 emulator for my pdp-8/e and want to run a cable about 20ft. I was thinking about using 4 runs of cat5 twisted cable and the individually contacts would be quite convenient. -chuck

21 years, 10 months

Getting Started with VAXen (was Re: vaxstation 3000)

by classiccmp＠crash.com

> To the classiccmp DEC-heads: is the 3000 a good starting point > for someone who's curious about VAXen? If not, why not, and > what would be a better place to begin? If you want to get started with VAXen, any flavor of VAXstation 3100 would be a great place to start. A basic VS3100 (aka model 30) would be an adequate, very cheap way to start. They'll do everything you'd need to begin learning about the VAX and VMS, Ultrix, or *BSD. These early models are limited in terms of expansion and speed by current standards, however, and if you have the money or opportunity you might want to look for something faster like a VS3100 m76, or any VS4000. To learn more about the different VAX models, I'd take a look at the NetBSD/VAX page http://www.netbsd.org/Ports/vax and look into the different model descriptions. To get licenses and media for running VMS, go to the DECUS/Encompass OpenVMS Hobbyist Pages at http://www.montagar.com/hobbyist/index.html You'll have to join Encompass, but that's free. And you'll need the serial number from your VAX/Alpha. If you check the archives for this mailing list, or hit Google Groups archives for comp.sys.dec and comp.os.vms, you'll find all kinds of info and links to web sites. Good luck, and have fun! --Steve.

21 years, 10 months

Fw: Emulated Peripherals

by jwest＠classiccmp.org

----- Original Message ----- From: "Jay West" <jwest(a)classiccmp.org> To: <cctalk(a)classiccmp.org> Sent: Sunday, February 16, 2003 3:23 PM Subject: Re: Emulated Peripherals > UGGGGG!!!!! > > Ok, what moderator let that obvious advertisement through??? I know it > wasn't me. > > Sorry folks, I'll try to ensure that doesn't happen again. > > Jay West > List Admin

21 years, 10 months

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test-drb February 2003