test-drb December 2015

test-drb@ccmp.vtda.org

191 participants
268 discussions

by tmfdmike＠gmail.com

Recently found some long-lost images of 5 1/4" floppies that were sent to me... 10-15 years ago. Here's one of them: http://www.corestore.org/RP06.552 I've never seen that .552 file extension before. Any clue? It's possible that refers to a version number rather than some obscure disk image format... (They are allegedly Setasi Shelby RP12 boot disks btw :-) ) Mike http://www.corestore.org 'No greater love hath a man than he lay down his life for his brother. Not for millions, not for glory, not for fame. For one person, in the dark, where no one will ever know or see.'

8 years, 6 months

Anyone fancy a laugh?

by jnc＠mercury.lcs.mit.edu

> From: Adrian Graham > Overblown salesmanship aside, technically I suppose they're right. Well, I don't think so. According to Wikipedia (I know, I know), the Lisa was released on January 19, 1983, but the Xerox Star (AKA Dandelion): http://en.wikipedia.org/wiki/Xerox_Star was introduced in 1981, almost two years before. The Star was supposed to be a commercial product version of the Alto, and although it had many issues, it did have an advanced version of the graphic-based user interface that is now universal - icons, etc, etc. And it had a mouse. Noel

8 years, 6 months

Anyone fancy a laugh?

by binarydinosaurs＠gmail.com

Having typed that subject line I'm changing my attitude slightly: http://www.ebay.co.uk/itm/ONE-OF-FEW-REMAINING-1ST-AVAILABLE-MICE-IN-THE-WO… Overblown salesmanship aside, technically I suppose they're right. Even given Doug Engelbart's introduction in 1964 the mouse wasn't a massive commercial success by 1983 was it. Still a lot of cash though, and when I bought my Lisa in 2005 it came with that rodent so I'll put it alongside my little collection of VSXXX workstation mice as WOW*R at RE*L@@K* items :) -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest home computer collection? www.binarydinosaurs.co.uk

8 years, 6 months

dumping Western Digital Microms (PDP-11, WD16, Pascal Microengine)

by jnc＠mercury.lcs.mit.edu

> From: Eric Smith > So far I have dumped the following LSI-11 Microms: > > 3010D, DEC P/N 23-001B5 (also designated CP1631-10) - addr 0x000-0x1ff > 3007D, DEC P/N 23-002B5 (also designated CP1631-07) - addr 0x200-0x3ff Excellent work! I was going to point out that there is another uROM (KEV11) for the LSI-11, for the EIS/FIS, and also that there is some variation in the numbers of the uROM chips, but along the way, I ran into a puzzle. DEC documentation differs on the location of the two uROM's in the LSI-11/2 (KD11-HA, M7270): the 'Microcomputer Products Handbook' gives the order (from the handle end) as KEV11, uROM 1, uROM 0, Control, Data Path; the print set for the KD11-HA gives KEV11, Control, uROM 1, uROM 0, Data Path! >From which I conclude that either: i) one of the documents, perhaps the Handbook, is wrong, or ii) the 'Control' chip must also be a uROM, and that there is some variation in how the 3 chips can be plugged in? Here is more data from a couple of boards I have access to (from the handle end): - 2007C 23-002C4, 3010A 23-001B5, 3007D 23-002B5 - 2007C 23-002C4, 3010D 23-001B5, 3007D 23-007B5 - 2007C 23-003C4, 3010D 23-008B5, 3007D 23-007B5 Anyone know what's up here? Getting back to the KEV11, the one I have seen is a 3015 23-003B5. > the control chip also contains PLAs that can force microcode jumps under > various conditions despite there being no corresponding jump instruction in > the Microms. Hmm. Any idea/way to read them out? Noel

8 years, 6 months

scan of IEEE-696 standard

by spereira1952＠comcast.net

Here is another scan from a different location: http://www.imsai.net/download/IEEE_696_1983.pdf I hope this may help. smp ----- Original Message -----

8 years, 6 months

dumping Western Digital Microms (PDP-11, WD16, Pascal Microengine)

by jnc＠mercury.lcs.mit.edu

> DEC documentation differs on the location of the two uROM's in the > LSI-11/2 (KD11-HA, M7270): the 'Microcomputer Products Handbook' gives > the order (from the handle end) as KEV11, uROM 1, uROM 0, Control, Data > Path ... > From which I conclude that either: i) one of the documents, perhaps the > Handbook, is wrong, or ii) the 'Control' chip must also be a uROM, and > that there is some variation in how the 3 chips can be plugged in? > Anyone know what's up here? To answer my own post, I looked at the prints (should have done this before I posted, sigh), and there is no way it can be ii). The Control chip has a bunch of discrete signals on pins where the uROM's have micro-instruction bus pins. So there's no way you can swap them around. So the 'Microcomputer Products Handbook' diagram (pg. C-18) has to be wrong. Noel

8 years, 6 months

DEC corporate cab side panel.

by mattislind＠gmail.com

I have one side panel for a DEC corporate cabinet. It should fit VAX-11/780 or similar cabinets. It is in good shape. Anyone need one? It is in Stockholm, Sweden. Also has some other parts for the cabinet, like wheels and other steel parts. /Mattis

8 years, 6 months

KiCad Footprint ??

by gerardcjat＠free.fr

Speaking of KiCad .... Yesterday, I tried for the first time KiCad, and my first board design with it. The very first part I was looking for .... I was not able to locate it. Is it because I am a newbe or because this part does not exist yet, beeing "too old" ?? I was looking for : Card edge connector ( fingers print ) , any contact count, BUT pitch = 3.96 mm Any help ?? Thanks !! --- L'absence de virus dans ce courrier ?lectronique a ?t? v?rifi?e par le logiciel antivirus Avast. https://www.avast.com/antivirus

8 years, 6 months

NCR 376 card punch

by ed＠groenenberg.net

So I saw this NCR376 card punch on the German Ebay and placed a bid, getting it for Eur 1.50 (approx $1.75). Last Saturday I picked it up near Frankfurt and brought it back home and came with a small user manual (in German), 2 sheets of diagrams (need to find a magnifier to read it properly) and about 500 unused cards. There are a few small issues, the rubber rollers of the feeder are melted, but apparently can be replaced using some heat shrink tube, the rubber layer seems to be very thin. Another issue are the transport rollers which moves the card from right to left where the hopper is. Those are also melted but again seem to be repairable. Last issue is that when I press some keys on the keyboard, the card does not advance, only some clicking noises from the backplane is heard. The backplane consists of s series of relays on a few cards, and a number of capacitors on a few other cards. (Yes, this card punch is driven by a series of relays). This unit is OEM-ed from JUKI (Juki-1300), a Japanese company who made it. Although the machine is small (about 100 x 100 x 45 cm) is weights 100Kg. Anybody know a source for other manuals of this machine? Googling for it did not return much for it. Ed -- Ik email, dus ik besta. BTC : 1J5fajt8ptyZ2V1YURj3YJZhe5j3fJVSHN LTC : LP2WuEmYPbpWUBqMFGJfdm7pdHEW7fKvDz

8 years, 6 months

Wood (was Re: IBM Mainframe terminal stuff)

by spacewar＠gmail.com

On Fri, Dec 18, 2015 at 8:27 PM, Fred Cisin <cisin at xenosoft.com> wrote: > Was it the Processor Technology Sol that had oak strips on the sides? Walnut.

8 years, 6 months

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test-drb December 2015