test-drb November 2016

test-drb@ccmp.vtda.org

165 participants
224 discussions

by jnc＠mercury.lcs.mit.edu

> From: Mattis Lind > Thanks Noel for sorting this out. Eh, de nada. But thank you. >> I wonder if the ucode in the two versions is identical? The uROM chip >> numbers should give it, (if they are the same on both versions, albeit >> in different locations on the board), but I have yet to check. Does >> anyone happen to know? OK, so the situation here is pretty complicated. To start with / make things worse, that CPU uses lots of PROMs. Lots and lots and lots and lots of PROMs. For the data paths board (M7260), both major versions appear to contain the same PROMs (going by the DEC part numbers), but the chip location (Exx) numbers are all different. For the control board (M7261), the C, E ('early' version) and F ('late' version) etch revisions each contain mostly the same PROMs, but apparently with slight differences between the sets of PROMs in each (as reflected in different DEC part numbers). For details see: http://gunkies.org/wiki/PDP-11/05#Control_PROMs to which I have just added all the gory details. As to getting the contents of all of them dumped in machine-readable form - oi vey! >> on the earlier version (prints for that version are in the GT40 prints >> online It turns out that I have hard-copy prints for the "C" etch revision of the M7261, which do not yet appear to be online; the GT40 prints have the "E" etch revision. I will scan the pages for that revision of the board, and put them up 'soon'. (I'm not doing the whole print set, it's about 1" thick, and most of them are for other things anyway, like MM11-L memory, etc.) Noel

3 years, 6 months

Free to a good home: Honeywell/Bull DPS-6 workstation / server (Seattle, WA)

by derschjo＠gmail.com

Hi all -- I picked this DPS-6 up over the summer and it's just taking up space (quite a bit of space) in the corner of my basement. This is a custom 16-bit, bitsliced, microcoded CPU from the early 80s with (I believe) 8mb of memory, and ethernet. It would originally have run a version of GCOS. It's about the size of a large-ish minifridge, but a bit deeper. It's also quite heavy! It's a neat machine, but it's very obscure and unfortunately incomplete (it is missing both mass storage and storage controllers). Otherwise, it is complete and in good condition (albeit a bit dirty). So you can see why you'd really want to have it in your collection . If anyone's up for a project, drop me a line. Local pick up in Seattle, WA. Thanks, Josh

5 years, 2 months

eBay: 1982 Prime Computer

by jnc＠mercury.lcs.mit.edu

This is listed under the informative title "vintage computer": http://www.ebay.com/itm/291934825422 which leads me to post it here under a more informative title, hoping that someone here has a soft spot for Primes! Noel

5 years, 4 months

mainframes and other stuff

by sales＠elecplus.com

Mainframes and other stuff Recycle center in NC is willing to save out "stuff" for people. No, no one can go in the back and scrounge. No, he does not want a lot of emails from people. Yes, he gets big blue and orange and beige 6 foot tall OLD mainframes in all the time. They squash them at the moment. Yes, he will package small orders, and will properly palletize larger orders. Local pick up will be available after the new year. So, if u can send me a picture with description and some part numbers, along with what you want to pay, I will consolidate things and make arrangements. Please don't ask for specific boards from DEC; they don't want to go into that much detail. QBUS will mean nothing to him. Big orange cabinet that says xxxxx is much more likely to get saved. They are moving to new warehouse 1st of the month, so all this will start happening after the 1st of the year. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-792-3400 phone 830-792-3404 fax sales at elecplus.com AOL IM elcpls

5 years, 10 months

Documation card readers for sale

by ball.of.john＠gmail.com

About six months ago I struck a deal with a place down in California for four Documation M1000's that I've been able to tell so far they all work but I really don't have space for more than one. I've been trying to sell them at a loss for months now over on the Vintage Computer Forums and Nekochan (if you got here you'll find pictures) but no bites. I swear there were people out there that were looking. Where did you folks go? Might anyone here be interested? I absolutely refuse to put them on the curb. -John

6 years

TU58 tape formatter (was Re: rebuilding DC100A cartridges?)

by shadoooo＠gmail.com

Hello. I have a VAX730 with both TU58 drives destroyed (capstan melted, need replacements). I also have a bunch of cassettes, but unfortunately all seem to have problems with the bend and/or bad spots on the tape. Possibly I would try to replace the broken bands (if I find a source) and/or replace the magnetic tape when damaged (I was thinking to try with audio cassette tape, don' t know if metal oxide high density tape could be good for it). Anybody has some information about the coercivity of original DEC TU58 tape? One problem indeed is the need of reformatting the tape, but: if I can emulate the TU58 drive using a serial, would it be possible to send raw commands to the drive using the serial and a PC? Andrea PS-If possible, some good-condition cassette would be very useful to me too. I'm located in Italy.

6 years, 1 month

TI System V?

by derschjo＠gmail.com

Anyone have any idea where one might track down a copy of TI System V for the S1500 series? I've had these two TI UNIX systems for awhile now, a TI S1505 and a TI S1507 (68030 and 68040-based, respectively). They came without hard drives or OS media and so they've basically been doorstops. I asked around about OS media back when I got them (in 2013) and at the time I got no leads; I'm guessing things probably haven't changed, but I figured I'd ask again just in case... Seem like nice machines, wish I could do something with 'em... - Josh

6 years, 6 months

Logic Analyzer software for the HP-IB/RS-232 bus pre-processor HP 10342B

by marc.verdiell＠gmail.com

This has probably been asked before, but does anyone have the software package that came with the HP-IB/RS232 HP10342 bus pre-processor for the HP1650 series Logic Analyzer (actually I have a 1670G)? It should have a config file and an inverse assembler file. I'm interested in the HP-IB files. Can't find it anywhere. - Marc

6 years, 6 months

Jobs, McGowan and Olsen

by dm561＠torfree.net

An interesting 3 hours on PBS last night: - 'Steve Jobs - One Last Thing': No description necessary. - 'Long Distance Warrior': McGowan/MCI's David & Goliath battle with AT&T and disastrous merger with Worldcom. - 'Digital Man/Digital World': Ken Olsen/DEC's growth and ultimate decline. (No doubt everyone here except myself had already seen this one ;-) Interesting comparison of the different styles and personalities of three men who profoundly influenced the tech world of today and their companies. Thoroughly enjoyed it. m

6 years, 8 months

Tek 40xx computer users

by rdawson16＠hotmail.com

I bought the Tek 4051 on ebay today; Jason brought it to my house and it works perfectly, with about a half hour of programming instruction my 12 old daughter was plotting a cat face. https://www.facebook.com/Thelma.Franco/videos/10154277153852670/ I would like to get in touch with other users of this first personal computer, and find additional resources. Do you know where I can find an archive of BASIC programs for this? Has anybody built plug in cards in the back, mine came with a realtime clock and a "file manager", I do not know what that one does. I have some Tek scopes with IEE-488, and I will see if I can get the IEEE interface working. There was a DC300 tape in the machine: biorithm craps blackjack artillery tanks weatherwar The belt is broken in the tape, I have ordered some new DC300's and will transplant the tape. Any resources will be welcome! Randy

6 years, 11 months

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test-drb November 2016