test-drb September 2015

test-drb@ccmp.vtda.org

198 participants
312 discussions

by vlad.stamate＠gmail.com

While I was trying to read the ROM in my 9121 for Eric Smith I found out that my Wellon VP-280 could not do it (it could not recognize it and only read FF FF FF FF). I could use it however to dump the ROM of an IBM PS2 that I cannot boot anymore (so it is not entirely useless). So I am asking what you all use to dump various ROMs from vintage PCs/peripherals/etc? Is there a good brand out there of E(E)PROM programmer? Do you roll your own solution with an Arduino/RaspeberryPi? Thanks, Vlad.

9 years, 3 months

'New' PDP-11 prints

by jnc＠mercury.lcs.mit.edu

A lengthy, and pleasant visit with Paul A, post-VCFMW (BTW, belated congrats on that, Jason - I don't know where my brain was last night - fried from the long drive yesterday, probably), has produced a number of missing PDP-11 FMPS's! Most importantly, we now have the 11/73 prints, which I will be scanning Real Soon Now. (So now I can have a crack at fixing all the broken ones I have! :-) That does leave us needing the 11/83/84 CPU prints, so if anyone has a set... I also found prints for the MF11-U, MF11-W, and MM11-Y; none of which appear to be on-line (although the MF11-U ones might be in the 11/05S print set, which ISTR is online). So I'll have a lot of scanning to do when I get home. The reason for this message is to ask if anyone has a special need for any in particular; if so, I will move those to the head of the list for scanning. I don't think the ME11-L prints are online either, but those I have in my 11/05 print set - I'll have to see if that print set is online somewhere, no point re-scanning them, if so. There are a number of things like that (e.g. the H786 power supply for the BA11-N; not available separately, but in the 11/23 FMPS, if you know to look there): we ought to produce some sort of registry, to collect such information in one place. Noel

9 years, 3 months

Dec 8235 IC?

by steve＠tronola.com

Hi Simon, As others have implied, the DEC8235 is a Signetics 8235N. It's available >from obsolete part distributors. A quick search turns up this source: http://www.4starelectronics.com/part_detail/8235N.html While the RFQ instead of a price is bad news in some places, I've had good results with that in the obsolete parts arena. > is there a list of equivalents for DEC ic's? --- Thought I had a longer list somewhere but this short list is what I find at the moment: DEC# Generic ---------------------- 97401 7401 8881 7439* Quad 2-inp NAND OC 8266 8266 Signetics 2-inp 4-bit wide mux 8270 8270 Signetics may = TI 74178 according to posts in cctech. 8271 8271 Signetics 4-bit SR in 16p pkg = TI 74179 8251 N8251N Signetics BCD/decimal decoder in 16p pkg 5380 SP380 Signetics 5314A SP314A Signetics 8640 DS8640 National 380 (?) SP384A Signetics Quad 2-in OR gate *Note that some DEC8881s have been reported as having 7439 markings on the bottom. Steve Lafferty

9 years, 3 months

Serial Disk Server to PDP-8/A

by charlesmorris800＠centurytel.net

I just installed Kyle Owen's Serial Disk Server on my 8/A (at high speed via an Omni-USB card I got from Philipp Hachtmann). There was a bit of a learning curve for me since I've never used any *nix programs before, or heard of Cygwin... But Kyle was very helpful, exchanging several emails this afternoon and it only took me a couple of hours to get everything figured out, up and running. It even comes with the indispensable diagpack2.rk05 OS/8 image already embedded in the .zip file, and it's now running on the real hardware. Haven't tried uploading anything yet but I'm sure that will work too! NOW maybe I can get my RL02 controller card (and the rest of the hardware, the power supply has started glitching again) debugged. Many thanks to Kyle for creating this very useful software :) -Charles

9 years, 3 months

Reading ROMs

by radiotest＠juno.com

At 07:56 AM 9/3/2015, Vlad Stamate wrote: >So I am asking what you all use to dump various ROMs from vintage PCs/peripherals/etc? For 1980s ROMs I still use the Serial EPROM Programmer published in BYTE by Steve Ciacia in the mid-80s. Dale H. Cook, Roanoke/Lynchburg, VA Osborne 1 / Kaypro 4-84 / Kaypro 1 / Amstrad PPC-640 http://plymouthcolony.net/starcity/radios/index.html

9 years, 3 months

MEM11 Status Update

by cube1＠charter.net

RK05 would be suitable Guy Sotomayor <ggs at shiresoft.com> wrote: > > >On 9/2/15 8:42 AM, js at cimmeri.com wrote: >> >> >> On Tue, Sep 1, 2015 at 11:39 AM, Jay Jaeger<cube1 at charter.net> wrote: >> >>> On 9/1/2015 10:01 AM, Ethan Dicks wrote: >>>>> run Unix V1 >>>> I am very interested in the MEM11 for this exact reason. I have a >>>> PDP-11/20 that I'd love to do this with. >>>> >>> You could also try Mini-Unix on your 11/20, which might support a >>> wider range of devices. >> >> Very interesting. Does Guy's MEM11 provide what's needed for Mini >> Unix without having to write special drivers? >> >Not sure what Mini-Unix requires w.r.t. devices. > >TTFN - Guy >

9 years, 3 months

Multitech MicroProfessor

by wrm＠dW.co.za

> >Possibly a long shot since I think the MPF was only a UK/Europe thing but At least one made it to South Africa. But no, I have neither the expansion board nor the manual I'm afraid. W

9 years, 3 months

Wanted: ROM images from HP 9895, 82901/82902, and other HP-IB disk drives

by spacewar＠gmail.com

If anyone has dumped the ROMs from the HP 9895 (8-inch) or 82901/82902 (5 1/4-inch) HP-IB disk drives, which use the Amigo command set, I'd appreciate copies of the images, ideally along with the HP part numbers of the EPROMs (probably 09895-xxxxx and 82901-xxxxx). For that matter, I'd be interested in ROM images from any of HP's other HP-IB disk drives, floppy, hard disk, or combined. Also ROM images from the 9114A and 9114B HP-IL disk drives. I already have one ROM image each from the 9114A and 9114B, but there were multiple firmware versions. Thanks! Eric

9 years, 3 months

VCFMW

by marc.verdiell＠gmail.com

I wanted to extend my thanks to the organizers of this event, and to Jay in particular who showed me the way around bringing up a cantankerous HP 1000 E system in real time, and somehow never got tired of my newbee questions. And the Chinon FR-506 5.25" drive that I picked up there for a very reasonable price, unlike the one I had bothered you about in a previous thread, actually works! All in all a very worthwhile way to spend award mileage on a trip from California to Chicago... Marc > From: "Jay West" <jwest at classiccmp.org> > Subject: VCFMW > > VCFMW is over, and I wanted to give a huge CONGRATS to Jason for the > resulting show that he put on [...] > > J

9 years, 3 months

KV-S3065CW scanners

by aek＠bitsavers.org

http://www.ebay.com/itm/201392632552 this is a good deal if the paper path isn't scratched up in them. the CW model has a 11" width feed and can scan a sheet 6 feet long. these are the ones I've been using for 5+ years just don't need any more right now

9 years, 3 months

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test-drb September 2015