test-drb June 2007

test-drb@ccmp.vtda.org

224 participants
486 discussions

Your contributions wanted! DEC graphics products

by aek＠bitsavers.org

> OK, I know DEC had some graphics products (VR something? GT something?) DEC had a long history of displays, going back to the Type 30 display on the PDP-1 Type 338, 339, and 340 displays processors for the PDP-8, 9 and 10, respectively DEC's laboratory systems all had point plot scopes (LINC, LINC/8, PDP12) VR was the designation for their CRTs. There were two generations of display list vector processors (VT-11, packaged with a PDP11 CPU as the GT series) and the VS-60 and a 512x512 raster display with a similar instruction set (VS-11) -- The E&S LDS-1 was a peripheral for the KA-10

17 years, 6 months

Your contributions wanted! DEC graphics products

by legalize＠xmission.com

OK, I know DEC had some graphics products (VR something? GT something?) and I know that some of you out there are much more knowledgable about these than I, so can I get a little help here? Please create a free account on my web site and add information about DEC graphics peripherals for the PDP-8, PDP-11, and DECsystem series of computers. If you know stuff about their workstations that would be great too! <http://www.computergraphicsmuseum.com> Everything is done as a wiki, so it should be easy to edit and add information once you create yourself an account. The whole site is run by me, and I give spammers a quick knee to the groin when I meet them in person, so you know I'm not going to abuse your personal data. Thanks for your help! -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 6 months

New pcb design for S-100 prototype board available

by classiccmp＠memory-alpha.org.uk

Hi, > I can't comment on the quality of their services, I just >happened to have a magazine on the desk with their adverts >in. Thanks for the info, mostly just idle curiosity at the moment. TTFN - Pete.

17 years, 6 months

Pinging Dan Veeneman

by mokuba＠gmail.com

Tried to reply to your emails but i'm getting message delivery failed responses -- Gary G. Sparkes Jr. KB3HAG

17 years, 6 months

Baseline H-11 board set?

by oldcpu＠rogerwilco.org

Ethan Dicks said: > What I haven't been able to find online is a list of the boards that > an H-11 typically shipped with. I know it used an LSI-11 (11/03) CPU, > so there's that, plus a console SLU board, probably a Heath one (don't > know the part number), the H-27 host card, and at least 16K of RAM, > I'm figuring, but is there anything else? In particular, I'm thinking > about bus termination... an unremarkable PDP-11/23 board set might be > a KDF-11 + MSV11 + RXV11 + DLV11E + BDV11... that gives you (in order) > CPU, memory, disk, console SLU, and bootstrap/terminator. What's the > equivalent combo for an unremarkable H-11? I'm certainly no expert on Heath gear, or DEC gear for that matter, but I've been lucky enough to snag a couple of H11s in the last year. Here's what are in my two systems: Sytstem 1: - M7270 : KD11-HA : LSI 11/2 CPU - WHA-11-16 : 16KB memory - H-11-5 : Serial I/O - H27 : Floppy I/O - M8028 : DLV11F : Async SLU - WHA-11-16 : 16KB memroy System 2: - M7270 : KD11-HA : LSI 11/2 CPU - MSC 4601 : 16KB memory - H-11-5 : Serial I/O - H27 : Floppy I/O - H-11-5 : Serial I/O - H-11-5 : Serial I/O I haven't been able to test these out yet, though I have gotten as far as reforming the PS capacitors and running the PSs thoroughly. I have some original documentation for the H-11-5 serial boards, and comparing that with the DEC handbook I discovered that the configuration jumpers, etc. are essentially the same as the DLV11. If these two systems are at all 'ordinary' and 'unremarkable' then there you go! Hope this helps! BTW, I might have HT11 on floppies hidden in some boxes. Haven't yet gotten to doing the software inventory. - J

17 years, 6 months

Tube Logic - homebrew (was Re: Caig ProGold / Stabilant 22)

by tshoppa＠wmata.com

Woodelf wrote: > Tim Shoppa wrote: >> My last batch I got from Antique Electronic Supply, on the web at >> http://www.tubesandmore.com/ >> >> The past few years I've been a good enough customer of theirs that >> they sent me some chocolate vacuum tubes at Christmas time :-). > So what have you been buying? I only need a order every other year. Tubes, transformers, chokes. Some ham and audio stuff, but one of my latest projects does digital logic with several dozen 6SN7's. No, it's not actually a "computer" in that it's not programmable but my next thoughts are turning to that arena. The first programmable stuff I might do would end up being plugboard programming, most likely. I've recently been playing with heptodes as logic gates (and gotten many 7036's with IBM labels from AES. They're dirt cheap, and if I do it right each will replace 1 to 3 6SN7's!) Tim.

17 years, 6 months

Baseline H-11 board set?

by ajp166＠bellatlantic.net

> >Subject: Baseline H-11 board set? > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Date: Fri, 22 Jun 2007 14:56:17 -0400 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Hi, all, > >I dug out my H-11 and H-27 this week, to take yet another stab at >getting the H-27 drives working. The H-11 itself works fine with >various DEC boards (including an RXV11 + RX01), but I'd like to get it >working as an H-11, not a PDP-11 in a Heath shell. > >What I haven't been able to find online is a list of the boards that >an H-11 typically shipped with. I know it used an LSI-11 (11/03) CPU, >so there's that, plus a console SLU board, probably a Heath one (don't >know the part number), the H-27 host card, and at least 16K of RAM, >I'm figuring, but is there anything else? In particular, I'm thinking >about bus termination... an unremarkable PDP-11/23 board set might be >a KDF-11 + MSV11 + RXV11 + DLV11E + BDV11... that gives you (in order) >CPU, memory, disk, console SLU, and bootstrap/terminator. What's the >equivalent combo for an unremarkable H-11? > >-ethan Barest minimum: LSI-11 16kram (or a partial populated card of 4k) SLU (dl equivilent) Additional items: FDC interface for H27 (the Heath Floppy interface has a BOOT rom) Second serial (usually printer in DEC systems) Parallel for Heath punch reader. A terminator is NOT required for LSI-11 nor a BDV(boot card) as uODT allwos for boot code if needed by hand entry. Allison

17 years, 6 months

Baseline H-11 board set?

by ethan.dicks＠gmail.com

Hi, all, I dug out my H-11 and H-27 this week, to take yet another stab at getting the H-27 drives working. The H-11 itself works fine with various DEC boards (including an RXV11 + RX01), but I'd like to get it working as an H-11, not a PDP-11 in a Heath shell. What I haven't been able to find online is a list of the boards that an H-11 typically shipped with. I know it used an LSI-11 (11/03) CPU, so there's that, plus a console SLU board, probably a Heath one (don't know the part number), the H-27 host card, and at least 16K of RAM, I'm figuring, but is there anything else? In particular, I'm thinking about bus termination... an unremarkable PDP-11/23 board set might be a KDF-11 + MSV11 + RXV11 + DLV11E + BDV11... that gives you (in order) CPU, memory, disk, console SLU, and bootstrap/terminator. What's the equivalent combo for an unremarkable H-11? -ethan

17 years, 6 months

Caig ProGold / Stabilant 22

by dm561＠torfree.net

---------------Original Message: Date: Thu, 21 Jun 2007 12:57:57 -0700 From: Al Kossow <aek at bitsavers.org> Subject: Caig ProGold / Stabilant 22 The wisdom of using this stuff was being discussed on another mailing list, so I thought I'd see what people knew about it. I suspect it is similar to this: http://www.stabilant.com/techt20h.htm There seems to be almost nothing on the web about what the Caig stuff actually is. Materials safety data sheet lists ingredients as 'trade secret' Reasonable discussion of the Stabilant stuff in patent #4696832 --------------Reply: I've used Stabilant22 for years to coat edge connectors on boards in systems exposed to heavily contaminated industrial environments. Works well; expensive, but a little goes a long way. mike

17 years, 6 months

What are the really unusual or weird computers?

by aek＠bitsavers.org

> What I want to know is, what did they write the original mac os on. Lisa > And is that what they wrote the subsequent versions on? Lisa for the System until roughly the start of MPW when there was a Mac-hosted build environment. The ROM was entirely assembler and could be built on a Mac Plus with HD20 (slowly). Parts of the system converted from Pascal to C through the 80's.

17 years, 6 months

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test-drb June 2007