test-drb September 2015

test-drb@ccmp.vtda.org

198 participants
312 discussions

Resetting/bypassing P/OS password on DEC Pro 3xx series?

by derschjo＠gmail.com

Anyone recall what the procedure is for resetting or bypassing the password on P/OS? I *know* I was able to find this out before (in 2008 or so) because I did it on another Pro 350 I have, but I cannot for the life of me find anyplace that documents the procedure (the FAQ (http://www.deccomputer.info/2012/05) has no useful suggestions). I recall it required booting from a special floppy that had a few filesystem tools that'd allow replacing the password file; I'm sure I still have the disk image but I have no idea which one it is. I guess I should have saved the instructions somewhere (or maybe I did and I simply can't find them!). I must be getting old. I have a new Pro 350 in my possession which has a PC compatibility card; I'd like to see if the hard drive contains software for it (or anything else interesting) before I wipe it... Thanks, Josh

10 years, 1 month

would like to find blue dg et head looking terminal to go with small ecli...

by COURYHOUSE＠aol.com

Pretty futile to restore until I have manuals and a load tape if needed in front of me. The previous owner said it powered up and did not blow smoke so that is a good thing... but even still that was many many years ago. Unlike you Jay that has a 'mountain' of DG stuff in front of you to *wicker basket something together from... all I have is this one lonely rack! I have no familiarity with DG op/sys at all.... never ran one .. I did had an orig NOVA ( lo s/n no other suffix after it... about the first year I was in the computer business sold it to someone... I did try to track it back but they guy has scrapped it... as I found out 30 years later. BUT! I figure DG sould have some sort of representation here... and if it attracts MORE DG so be it!Least case it needs a terminal to display with it and ... yes... A POSTER! This month's 'make computer work ' project is HP-3000 related. In a message dated 9/22/2015 12:04:36 P.M. US Mountain Standard Time, jwest at classiccmp.org writes: Ed wrote... ---- Our Eclipse is not as grand as some photos ,,, and the tape drive is a small side by side reel unit that fits in the single rack here is a photo of ours.... http://www.smecc.org/data_general.htm ---- There's nothing non-grand about that. Nice non-blinken Eclipse with 6125 tape drive, and some type of disk unit in the bottom. Nice. And... ---- had it for years need manuals etc and maybe some sales lit. or scans of advertising material to display with it... but yea... it cries out to have a terminal with it! ---- No, it cries out to be restored and run rather than just sitting under a poster. But that's just me. J

10 years, 1 month

Looking for RX01/02 rack slides

by charlesmorris800＠centurytel.net

I just acquired an RX01 drive (and an RX8E) for my 8/A system. It wasn't too painful to get it going, as the RX8E had "only" one bad IC that was easy to find and I had a spare. Details on the DEC forum at vintage-computer.com. Then the RX01 started audibly working, but with new-old-stock 3M diskettes, showed 22 seek errors on the first pass to Drive 0, finding good headers with correct CRC but the wrong ones a track or two away. That cleared up promptly and 25 successive passes had no errors on either drive. So now I have two floppies with 487 free blocks each, built in OS/8 ;) However, the drive came only with the inner slides (that attach to the chassis), but not the outer rails that bolt to the rack. So I'm looking for either a complete pair of RX slides, or just the outer ones that I need. If they can't be had, I may have to find a heavy-duty rack shelf and set the drive on it. That would be inconvenient to service the drive but it should not need attention often. Can anyone help me find some? Thanks. -Charles

10 years, 1 month

PDP-11/05 restoration project - anyone has a M7810 or M781?

by mattislind＠gmail.com

Hello! I have started to work slowly with the PDP-11/05 I received a year ago. It is the big BA11-D chassis type machine. The power supply is now fixed and working fine. A few smaller capacitors were leaking. But also one of the big input filtering capacitors was bad and had to be replaced. The front panel have been cleaned and checked. The next step is to start looking into the the CPU itself. Unfortunately one of the CPU boards are marked "faulty" so there are certainly work to be done. The plan is to get it to work with the 8kW core memory, M7800 connected to a good old teletype and PC05 paper-tape reader / punch and then run paper tape BASIC on it or other paper tape software. The problem is that I am lacking in the M7810 board. Since I do have a M105 and M7821 a M781 could do as well. Does anyone has a M7810 or M781 to sell? http://www.datormuseum.se/computers/digital-equipment-corporation/pdp-11-05 BTW. Does anyone have a BA11-D chassis and could help me take a photo of the top and bottom covers? Those are missing on my machine and it seems impossible find a drawing for the BA11-D chassis itself. It is not in the PDP-11/05 Engineering Drawings which I already have. And if someone also have a G231 I would be interested because that would mean that the machine can be fully configured with 16 kWords! /Mattis

10 years, 1 month

Regarding Manuals

by pontus＠Update.UU.SE

Hi I have more manuals than I really have room for. Lots and lots of VMS binders and softcover books. And now my employer is throwing out box upon box of SUN, Ultrix, tru64 and various literature. I'm trying to save what I think is useful and/or worth preserving. But It's damn hard to decide and damn hard to motivate filling up every inch of precious space. At the moment I thinking about just looking the other way and throw what is not directly useful to me. What is a collector/hoarder to do? Anyone who wants to turn up with a truck and fill with dead trees? Regards, Pontus.

10 years, 1 month

Small glass capacitors polarized?

by jnc＠mercury.lcs.mit.edu

Hey, everyone: those little glass capacitors (well, the casing is glass - I'm not sure what's inside) that one often sees used as per-chip noise/spike supression caps (often 0.01 uF or some such size) on 1970s/1980s vintage boards: are those things polarized, or can I put them in either way around? I tried looking online, but didn't get an answer I was fully acomfortable with (some of the 'glass capacitor' listings I found seemed to apply to a different kinda 'glass capacitor'). As always, thanks in advance for any help! Noel

10 years, 1 month

Big Alphas available

by pontus＠Update.UU.SE

Hi I need to make room for new goodies. So I'm offering two Alphas: * AlphaServer 2100 5/300 - Untested by me, good physical appearance. * DEC AXP 4000 - Was running when I picked it up. http://www.pdp8.se/bild/sthlm_haul/axps.jpg I can ship them, the probably need to go on a pallet. Regards, Pontus.

10 years, 1 month

If you OCR, always archive the bitmaps too - Re: Regarding Manuals

by couryhouse＠aol.com

We keep the graphics files as archive and to print from f o r displays. ... to read and search the pdf with inlaid ocr is ? reference. ? Ed# www.smecc.org Sent from my Verizon Wireless 4G LTE smartphone -------- Original message -------- From: Toby Thain <toby at telegraphics.com.au> Date: 09/27/2015 11:07 AM (GMT-07:00) To: General at classiccmp.org, "Discussion at classiccmp.org:On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: If you OCR, always archive the bitmaps too - Re: Regarding Manuals On 2015-09-27 12:22 PM, Pontus Pihlgren wrote: > On Sun, Sep 27, 2015 at 04:08:07PM +0200, Johnny Billquist wrote: >> >> I don't have problems reading the current scans, as such. But when >> having ten of these open at the same time, and scrolling through >> them, it becomes obvious that the bitmaps are heavy. It can take a >> while for the screen to be updated. Not to mention the problems you >> sometimes hits with searching... >> > > It seems to me that a better tool could solve the issue. One that > could display the OCR:ed content only and the scanned content > only when desired, for instance when you suspect an error. > > Is there such a reader? Is the content organised to make it > possible. > > /P > Right, if the bitmaps aren't available, then it's not an acceptable archive. Personally I never, ever, want to see the OCR'd version. But that may be coloured by a career as typographer and finished artist. No software can apply the judgment that humans did in the print edition; it's only more or less degrading steps from that point on. And to be clear I'm not at loggerheads with Johnny because I am indeed talking about acceptable archiving practice, not some conversion of a particular text which might be useful for a particular person on a particular day. --Toby

10 years, 1 month

Honeywell/Bull DPS-6 deskside info?

by michael.99.thompson＠gmail.com

> > > I put a few pictures up here: > > > > http://yahozna.dyndns.org/scratch/dps6/ > > > > Nice bitslice processor in there, an Ethernet controller, some memory > > (looks like 2MB) and as for the other boards, I'm not yet sure...) > > > > - Josh > The RICM had two DPS-6 systems. http://www.ricomputermuseum.org/Home/equipment/honeywell-dps-6 http://www.ricomputermuseum.org/Home/equipment/honeywellultimate-level-6 The second one is from the Ultimate Corporation, has a Pick processor (or microcode) and runs the Pick OS. In a prior life I managed the GCOS OS and communications on a Honeywell 6000. The first year I worked there we swapped the core for MOS memory, swapped the 120MB Ampex disks for 240MB MPI disks, swapped the Datanet 355 front-end and two 716 front-ends for two DPS-6 front-ends, and shrunk the size of the system by 30%. If I remember correctly, DPS-6 front-ends used the memory parity bits to make 18-bit memory, half of the 36-bit 6000 memory. We added a second I/O multiplexer, second CPU, more tapes, and more disks when it was upgraded to a Level-66. This was something like upgrading the architecture from NSA to NSB? We added a Honeywell Page Printer System. This was a really fast (for its time) printer that could perforate, hole punch, and collate the pages. I remember something about renaming the system to a DPS-8/70, but that was more marketing than technology. Eventually it was all replaced by a bunch of Tandem Non-Stop systems in a distributed network. -- Michael Thompson

10 years, 1 month

Acquiring a bunch of Lisp Machines

by lproven＠gmail.com

Just stumbled across this. I don't know what more to the story there is. http://kremlin.enterprises/post/129364443055/your-code-is-so-bad-we-had-to-… -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Cell/Mobiles: +44 7939-087884 (UK) ? +420 702 829 053 (?R)

10 years, 1 month

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test-drb September 2015