test-drb November 2010

test-drb@ccmp.vtda.org

162 participants
241 discussions

Bill's PDP-11/34A (was Re: PDP-11/34A bring up (question about front panel))

by ethan.dicks＠gmail.com

On 11/3/10, B Degnan <billdeg at degnanco.com> wrote: > I don't want to hijack this thread except to say that I too just got an > 11/34 last week. I still need to clean it and learn more about what it > was set to do, but I have a quick question about the front panel. My > system has a flat front panel without the white cover cut out resembling > a mirror image of the US State of Delaware on it's side. My system has > a black front panel with a white rectangular frame around it instead. > What is the origin of this variation? I have never seen that mounting frame for the front panel, but perhaps it's related to your "DEC DataSystem" cover panel. Here's a photo I found googling around for "DEC Datasystem" http://www.compuseum.at/portal/Computers/PDP1134/tabid/93/language/en-US/De… > Here are pictures from the system as I first got it, if it helps with > the card order/comparison purposes. Note that some cards are not > installed in the backplane. > http://vintagecomputer.net/digital/pdp11-34a/before/ Do you have packs for your RL01 drives? Hopefully the packs were removed and the heads locked for transport. An 11/34 w/RL01 is a nice little RT-11 system, though it'd be a bit cramped for 2.9BSD (both in terms of disk and RAM). You could probably also run an older version of RSX-11/M on it too. I think we ran something around RSX-11/M 4.0 or 4.1 on ours in the mid-1980s. -ethan

14 years, 1 month

PDP-11/34A bring up (question about front panel)

by billdeg＠degnanco.com

> > >> > >> > I am the new keeper of the PDP-11/34A that Jack Rubin rescued a while >> > ago and wrote about here, >> > >> > http://decpicted.blogspot.com/2010/01/pdp-1134a-data-systems-design-dsd-880… >> > >> > I took it on a road trip from Chicago back to St. Paul after VCFMW >> > in September. >> > >> > I've been doing a lot of cleanup on it and finally got to the point >> > where I could power it on (just the CPU box) this weekend. >> > >> > I think now I need to learn about Grant Continuity ;-) >> > > I look forward to reading more about this. I don't want to hijack this thread except to say that I too just got an 11/34 last week. I still need to clean it and learn more about what it was set to do, but I have a quick question about the front panel. My system has a flat front panel without the white cover cut out resembling a mirror image of the US State of Delaware on it's side. My system has a black front panel with a white rectangular frame around it instead. What is the origin of this variation? Here are pictures from the system as I first got it, if it helps with the card order/comparison purposes. Note that some cards are not installed in the backplane. http://vintagecomputer.net/digital/pdp11-34a/before/ Bill

14 years, 1 month

Information about Tektronix 4107A/4109A graphic terminals

by dm561＠torfree.net

Date: Wed, 3 Nov 2010 00:31:49 -0500 From: Randy Dawson <rdawson16 at hotmail.com> Subject: RE: Information about Tektronix 4107A/4109A graphic terminals Hi David, Eiter I or Ed may be able to help - I know I have a few 4000 series manuals. Ed runs VintageTek, a Tektronix museum here in Beaverton: vintagetek.org We are meeting Thursday for the bi-weekly run at the Tek Surplus store, I ask to see what he has available. Randy +++++++++++++++++++++++++++++++++++++++++++++++ A little OT but speaking of vintage Tek: I have a bunch of their Service Scope 'magazines' from the late 60's; can I assume that these exist elsewhere and I can dispose of them if and when? mike

14 years, 1 month

Bill's PDP-11/34A

by billdeg＠degnanco.com

> > I have never seen that mounting frame for the front panel, but perhaps > > it's related to your "DEC DataSystem" cover panel. > > I've seen that sort of frame a couple of times; they were used in > (possibly among other things) embedded applications. It's been a long > time but I think I saw them in big GenRad board testers. > > > Here's a photo I found googling around for "DEC Datasystem" > > > > http://www.compuseum.at/portal/Computers/PDP1134/tabid/93/language/en-US/Def ault.aspx > > Hey, that looks just like the rack my 11/70 is in. > That could explain the original purpose of the 11/34 in my possession, the rack that the system came in has a DEC DataSystem panel: http://vintagecomputer.net/digital/pdp11-34a/before/2010-10-27_20-42-43_160. jpg Bill

14 years, 1 month

10 Hole Disk Punch

by robin＠hx-20.com

> So they're 10 sector 5.25" floppies. Vector Graphic maybe? >To the best of my recollection, the VGs were 16RH, not 10. To which end >I asked Dwight if a 16 hole model might be feasible. >De The two Heathkit / Zenith HZ89s that I have both have hard-sectored 5.25? floppy drives. I successfully made some new disks up when I got them (circa 1991) by making a paper template from an original hard-sectored disk and punched holes in soft-sectored disks using a pencil. It worked but the disks are noisy due to ?burrs? around the holes catching on the sleeve inside the envelope. Robin

14 years, 1 month

Radio Shack Science Fair manuals

by pkamphues＠gmail.com

Wondering if you still have a manual for the science fair 200 in one kit. I have an old kit in great shape but no manual and I'd like to have it for the kids. Thanks Pete. Pkamphues at gmail.com

14 years, 1 month

Nuclear Data ND 6600

by legalize＠xmission.com

The Nuclear Data ND 6600 was some sort of laboratory PDP-11 setup. I have a terminal from such a system (very nice green keyboard). I'll upload some pics this week. However, while I was packing up the stuff I bought at the vendor's store, I saw that he had the rest of the system and not just the one terminal. Looks like a couple other terminals, some characteristically PDP-11 enclosure boxes (2x floppies, some other stuff, power enclosure). It looks like this stuff was meant to be rack mounted, except for the terminals, because there's no typical DEC enclosure like I would expect. Googling doesn't turn up anything useful except the usual firewalled citations from IEEE and ACM journals containing product announcements. Does anyone know more about these systems? From the descriptions that leak through google, it appears that it might have had some graphics capability and that interests me quite a bit. I couldn't look at the system close up because it was on a huge pile of stuff and I didn't have time to dig it out. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

14 years, 1 month

Amstrad 3in drive spares

by classiccmp＠philpem.me.uk

Hi guys, I've just acquired a pair of 3-inch Amstrad floppy drives, apparently >from a CPC (they're fitted with black faceplates). One is an EME-231, the other is apparently an EME-156 (someone's blanked out the model number with a Sharpie). Problem is, the 156 has a snapped drive belt, and the 231 belt feels REALLY loose. (They also look like they've been stored in a dusty box for a few years, but that's a problem for later...) Does anyone have a couple of spare belts for these, or a lead on a source who'll sell me a couple of them without wanting to charge me some silly amount of postage on top? Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

14 years, 1 month

surplus source for MRA connectors?

by dm561＠torfree.net

Date: Tue, 02 Nov 2010 15:53:01 -0700 From: Al Kossow <aek at bitsavers.org> Subject: Re: surplus source for MRA connectors? On 11/2/10 3:14 PM, MikeS wrote: > I'll see what there is. > Thanks! The connectors were quite common at one point. I was frustrated when I ran around to the usual Bay Area surplus places and found almost no Winchester connectors or pins anywhere. There are almost none on eBay, either. Looking for a connector there is a real nightmare there, trying to guess how someone would list them. ++++++++++++++++++++++++++++++++++++++ Sorry, Al; found some Winchesters and some Continentals that look compatible, but only 34, 50 and 75 contact versions, no 42s. Hope Will has some for ya. mike

14 years, 1 month

surplus source for MRA connectors?

by shoppa＠trailing-edge.com

> Looking for a connector there is a real > nightmare there, trying to guess how someone would list them. The very broad term for this style is "rack and panel". 50-way is an industry standard (at least in my industry! We have them by the tens of thousands) but I don't know about any multi-sourced 42-way. Tim.

14 years, 1 month

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test-drb November 2010