- test-drb@ccmp.vtda.org - classiccmp.org

More mystery recycler boards - DEC, Fujitsu(??), Cipher, Emulex

by jnc＠mercury.lcs.mit.edu

> From: Pete Turnbull >> The other thing that makes no sense is that the KDJ11-B (M8190) has >> all that extra circuitry on it to support PMI, etc - all of which is >> unused in the 11/73 application! Why not just plug in a (presumably >> cheaper) M8192? In the /73 application, the two are basically equivalent. > Don't forget the LTC :-) ?? The KDJ11-A has an on-board LTC - see EK-KDJ1A-UG-001, pg. 1-7. > Otherwise, you'd need an additional bootstrap card such as an MRV11-D > with -B2 boot ROMs, a DLVE1 (DLV11-JE) for the SLUs, something with an > LTC, and termination. Err, the KDJ11-A has on-board termination: see MP-01890 pg. 1 of 9, on the LHS. > A BDV11 wouldn't work as it doesn't have the ROM capability ?? The BDV11 is a ROM board? (And it works fine in a Q22 bus; the address recognition circuitry uses BBS7, it doesn't look at BDAL 16 and above.) Noel

10 years, 1 month

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National MM57409 "Super Number Cruncher", MM57109 "Number Oriented Processor"

by spacewar＠gmail.com

I finally got my hands on a couple of MM57409 "Super Number Cruncher" chips with 1985 date codes. I think it was probably introduced around 1982. It's a NMOS part with the same concept (though not compatible with) the earlier PMOS MM57109 "Number Oriented Processor", which was introduced in 1977. In both cases, National took their existing 4-bit masked-ROM microcontroller designs (MM5799 PMOS, COP440 NMOS), and the floating point code they'd already written for calculator chips, and turned them into math coprocessors. The MM57109 also had some support for acting as a floating point general purpose processor. The COP4xx has a test mode, so I should be able to dump the ROM of the MM57409. The MM5799 almost certainly had a test mode as well, but I haven't uncovered any documentation for it, so the ROM might have to be dumped optically. The MM57109 uses an 8-digit mantissa, and a divide takes an average of 78ms, and worst-case 223ms. The MM57409 has a 12-digit mantissa, and worst-case dvidie time is 66ms, with no average stated. Both also have a reasonably full complement of functions that would be found on a typical scientific calculator, including transcendentals. Both are quite slow compared to contemporary math coprocessors such as the AMD Am9511A (second-source by Intel as the 8231A), and insanely slow compared to the 8087. I'm tempted to wire up one of these (either kind) to an Apple II, and hack Applesoft to use it as a floating point decelerator. Back in the day, a few companies sold Am9511A cards for the Apple II. Of course, since Applesoft uses binary floating point but these National Semiconductor chips use BCD, the necessary conversion code running on the 6502 would make it even slower. Perhaps Atari BASIC would be a better choice as it used BCD.

10 years, 1 month

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HP-35/45 Simulator for PDP-8

by kevenm＠reeltapetransfer.com

There is a nice HP-16C emulator for Windows - and Android. http://www.wrpn.emmet-gray.com/ Also has Java version (and sources) Keven Miller > ----- Original Message ----- > From: "Marc Howard" <cramcram at gmail.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Sent: Wed 07 Sep 2016 09:53 AM > Subject: Re: HP-35/45 Simulator for PDP-8 > > >> I'd vote for the HP-1xC line myself. You can get 5 different calculators >> (financial, 3 x scientific and programmer) for nearly the effort of the >> first one. >> >> The HP-16C (http://www.hpmuseum.org/hp16.htm) would be especially helpful >> as it can easily be converted to calculate with a 12 bit with carry width >> and octal operation with just a few keystrokes. Even does 1's >> complement/18 bits if you happen to have a PDP-1 lying around. >

10 years, 1 month

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More mystery recycler boards - DEC, Fujitsu(??), Cipher, Emulex

by jnc＠mercury.lcs.mit.edu

> From: Pete Turnbull > all microPDP-11/73 machines had an M8190. The M8192 was mostly sold as > an OEM board. That's so bizarre (although the "Supermicrosystems Handbook", which covers the 11/73, confirms it used the KDJ11-B). So the KDJ11-A (M8192) was not used in any 'PDP-11/xx'? The other thing that makes no sense is that the KDJ11-B (M8190) has all that extra circuitry on it to support PMI, etc - all of which is unused in the 11/73 application! Why not just plug in a (presumably cheaper) M8192? In the /73 application, the two are basically equivalent. (OK, there are two built in serial lines on the M8190 - big whoop.) Both have 8KB caches (although the one in the M8190 has slightly fancier tagging, IIRC), etc, etc. Maybe it's the ROM (which the M8190 has, but not the M8192)? Noel

10 years, 1 month

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ENIAC Simulator

by blstuart＠bellsouth.net

Unfortunately, I won't be able to make it to VCFMW this year. (Those of you who don't know me are probably thinking "So what?" Those who do are probably split between "Aww, that's too bad" and "Good; he's a pain in the...") In lieu of my "sparkling personality" I'm making available the ENIAC simulator I would have exhibited had I committed to coming early enough to reserve a table. If you attended VCFSE or VCFE this year, you may have seen an early version of the simulator. It's now at a beta testable level of operation. The files you'll want to download and some minimal instructions for use are at: http://cs.drexel.edu/~bls96/eniac/eniac.html It's written in Go, so you should be able to compile it on a variety of platforms. For those not wanting to compile it themselves, I've included binaries for several options including Linux/amd64, Linux/arm, FreeBSD/amd64, FreeBSD/i386, MacOS/amd64, and Win/amd64. The Windows version has not been tested at all, and only minimal testing has been done on the Mac version. You'll also need TCL/Tk installed to get the wish program available as used by the GUI. Suggestions, comments, criticisms, and questions are welcome, but it will probably be a few weeks before I'll be able to make time to do anything about them. Enjoy. BLS

10 years, 1 month

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RK05 packs

by jnc＠mercury.lcs.mit.edu

So I have a fairly large group of 16-sector RK05 packs (i.e. PDP-8, -12) which I have no use for, which I would like to trade for 12-sector RK05 packs (i.e. PDP-11). Anyone have any of the latter, and need the former? Alternatively, if anyone has any head-crashed 12-sector RK05 packs, I would be interested in buying them (or trading something else) for them. (I am reliably informed that one can replace the platter on an RK05 pack without too much work, so I'd transplant the 12-sector hubs into the packs I already have). (Replies to me, please, not the whole list - unless there's some point you wish to make which would be of general interest.) Noel

10 years, 1 month

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Odd memory error in PDP-11/04

by jnc＠mercury.lcs.mit.edu

> From: Ethan Dicks Let's look at this one first, this is probably the easier to solve. >>> 2) Setting D10 in location 000000 results in D10 set in all the >>> locations >> Sorry, didn't follow that? Did you mean that if you store 02000 in >> location 0, all other locations now report the 02000 bit set? > Only 04000, but, yes. Ah. That's D11. :-) > If I set that bit in location 0, or other locations, it gets set in all > locations. If I clear that bit, it clears. So that's likely in the memory (although I suppose it could be the CPU, _somehow_). It sounds like there's a latch somewhere in the output path (because it affects all locations right away, not just once you've written to them) that's getting set one way or the other, and and then, won't change. I suspect the problem is with the flop for that bit, not in the circuitry that's clearing/clocking that flop, since it only affects that one bit. Looking at the MS11-J prints, there is indeed a '174 latch in the output path; the one for D11 is in E30 (input pin 14, output pin 15). You might want to throw a scope on it, and see if it is indeed acting consistently with the symptoms (to make sure this is actually the cause). Although why it can be either set or reset with a write, but freezes in one state for reads, is puzzling. I'd suspect control circuitry, but it's only that one bit. I don't think it can be something on the input side, because the memory chips have input and output on separate pins, so if something was hanging on the intput side, it shouldn't make it through the chip. > Something appears to have died while I was powered-on and testing last > night and now, the run light goes off right away after hitting boot, > and I don't see the address lines or the data lines flickering. Yeah, sounds like the CPU is halting. It's probably going to take a logic analyzer to figure out what's going wrong. Too bad that machine doesn't have a real front console, that would probably let you figure out what the problem is. Noel

10 years, 1 month

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DEC professionals Power Supply ...

by emu＠e-bbes.com

Anybody has a spare one, to sell? With all the discussions about the P350/P380, I went to my storage, and found two p350s without power supplies :( Cheers

10 years, 1 month

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RK05 packs

by jnc＠mercury.lcs.mit.edu

> From: Ethan Dicks > 12-sector packs are abundant compared to 16-sector packs Really? Most of the RK05 packs I've seen for sale on eBay in the last couple of years have been 16-sector - so I naturally assumed they were more common. Well, I guess that explains why my offer to trade drew such a response! :-) Noel

10 years, 1 month

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SWTPC 6800 weirdness

by vintagecomputer＠bettercomputing.net

My 6800 has been mostly working, but it seems to be occasionally flaking out. I don't know why. Sometimes you go to power it up, and there's no response on terminal side. The 'fix' is sometimes to wiggle the memory/CPU boards and then for some reason it's fine(ish). There are five cards installed right now - the MP-A, MP-S, a heavily modified MP-M board (with rams piggybacked on all the original RAM chips) and then two Digital Research 16k boards. The system was modified for Flex 2.0 Today it flaked again and would not come back up, so I pulled the MP-M board and the MP-A board and swapped slots. It came up, but memory at $0100 was missing. I tried powering up, swapping slots, etc.. same deal. Then I left the machine for an hour, powered up again.. boom.. now $0100 is back. I don't fully understand the addressing system but if that MP-M is configured as $A000 would that cover $0100 as well? I've tried changing the jumpers on each of the DR 16k board to cover $A000.. but the machine will not boot. I will only work with either the MP-M alone or those 16k cards with it configured to other spaces. In other words, the machine does not accept any other card configured for $A000. I'm wondering if anyone has any suggestions on how I might nail this down. I'm thinking some of the RAMs on that MP-M are flaky, but it would be a *nightmare* to try and diagnose it, with all the RAMs piggybacked, all the little jumper wires, and everything soldered. I'd prefer to bypass it and either use my other, less modified MP-M or just the DR boards, which are socketed. If any of you have suggestions on how I might take this MP-M out of the equation that would be awesome! Brad

10 years, 1 month

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UNIBUS M9312 ROM type identification

by jplist2008＠kiwigeek.com

Greetings; My googlefu is failing me and I was wondering if someone might be able to help me identify one of the boot ROMs present in an M9312 bootstrap/term board. The board has three ROMs, an RX01 (042130), an RX02 (042131) and then a mystery code - 043127. The M9312 ROM identification table does not list this ROM code - I suspect it _might_ be for a DSD combined 8" drive and Winchester disk box, but I'm under the impression this would appear as a DU device, and attempting to boot from DU gets an ILL CMD, suggesting otherwise. I tried all of the other possible mnemonics listed in the M9312 manual, so it doesn't appear to piggy-backing on any of those either. My thanks; - JP

10 years, 1 month

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Odd memory error in PDP-11/04

by jnc＠mercury.lcs.mit.edu

> From: Ethan Dicks > What's happening now . is when I change one location .. it > echoes across multiple locations... > ... > 1) Depositing any value is echoed 000020 later. > ... > Does this sound like a dodgy CPU, dodgy RAM or both? It could be either. One possible cause of the symptoms you're seeing is that address line A04 on the bus is being held to one value (high or low) by something on the bus, so that whether the CPU tries to set it to 0 or 1, it has no effect. Also, of course, there could be some fault in the CPU, so that when it tries to do something with address 0, it gets 020 (or vice versa). And similarly for the memory. I'd try to write a small (two instruction) loop that sets that address line high/low (e.g.: 5037 CLR @#1020 1020 775 BR .-4 and look and see if that address bit is flickering on/off on the UA11 (it will be on, but dully; constant assertion is bright on, constant de-assertion is full off). If so, the problem is almost certainly in the memory; if not, it could be either. > 2) Setting D10 in location 000000 results in D10 set in all the > locations Sorry, didn't follow that? Did you mean that if you store 02000 in location 0, all other locations now report the 02000 bit set? Noel

10 years, 1 month

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vt100 terminfo with padding for an actual vt100?

by fritzm＠fritzm.org

Hi all ? I?m trying to run a real-deal vt100 on a serial port connected to Linux (Xubunto 16.04). I?ve got this working *pretty* well, but it looks like the padding values in the default vt100 terminfo entry are not quite correct ? when running the vt100 at 9600 I still get occasional garbage characters on the screen, and 19200 is a hopeless mess. I did figure out that if the terminfo contains ?xon?, the non-mandatory padding values in the terminfo are disregarded. Removing this, then disabling xon/xoff on both the vt100 and the tty device actually produces *better* results ? apparently the turnaround on xon/xoff isn?t quite fast enough to keep the terminal from being swamped at higher baud rates, and padding actually works better. But tracking down the source for the default vt100 entry turned up a comment that admits that the padding values there are a total guess. :-( So, before I go diving too much further into the terminfo-tweaking-samp, I thought I?d ask if anybody has a good vt100 entry already on hand? (I?d take one for the VT52 as well!) thanks much, ?FritzM.

10 years, 1 month

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11/04

by useddec＠gmail.com

Hi Ethan, If you are going to VCF and I go, I'll Try to throw a MS11-JP in the van for you. It's yours for bugging the guy with the H960s one more time. That should save you some chip chasing time. Thanks, Paul

10 years, 1 month

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More mystery recycler boards - DEC, Fujitsu(??), Cipher, Emulex

by jnc＠mercury.lcs.mit.edu

> From: Jules Richardson > M8190-AE ; 11/83 CPU > M8190-AB ; 11/83 CPU (or /73??) w/FPU As far as I know, all the M8190's are _basically_ the same: they are the KDJ11-B CPU, which support the PMI memory bus, can operate with a KTJ11-B to provide a UNIBUS, etc. They are the CPU in an 11/83 (with QBUS only backplane) and the 11/84 (with QBUS/UNIBUS backplane). The various models of the M8190 vary in details (e.g. although all have a socket for the FPJ11 floating point accelerator chip, the earlier ones don't work properly with it), including the clock speed (15/18 MHz, etc). The 11/73 uses the KDJ11-A M8192, a completely differente card. Noel

10 years, 1 month

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Y Combinator is restoring one of Alan Kay's Xerox Alto machines

by curiousmarc3＠gmail.com

Ken's in-depth blog post to go with the previous video http://www.righto.com/2016/07/restoring-y-combinators-xerox-alto-day_11.html > On Jul 5, 2016, at 2:46 PM, Curious Marc <curiousmarc3 at gmail.com> wrote: > > Video from yesterday?s work on the Diablo cartridge disc: > https://youtu.be/PR5LkQugBE0 > Should be up in a few minutes. > We were tickled pink to have official representation from PARC (former Xerox Parc) at the session. > Marc > > Ken?s new post on the monitor repair to go with my previous video. > http://www.righto.com/2016/07/restoring-y-combinators-xerox-alto-day.html > Al Kossow got us a new CRT tube, so we are probably going to try that this week-end. > Marc > > > Latest entry from Ken Shirriff, trying out BCPL (ancestor of C). On the emulator, not yet on the real machine: > http://www.righto.com/2016/06/hello-world-in-bcpl-language-on-xerox.html > > Marc > > There are only two entries right now: > http://www.righto.com/2016/06/y-combinators-xerox-alto-restoring.html > http://www.righto.com/2016/06/restoring-y-combinators-xerox-alto-day.html > Marc > >

10 years, 1 month

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The huge lot that had the NIB 8" floppies is now on ebay

by jnc＠mercury.lcs.mit.edu

> From: Jason Howe > Some pretty interested stuff comes up on ebay occasionally which I > might not have seen otherswise. Exactamundo. > when folks just dump an ebay item number rather than a full link, those > posts should die Why? It's a tiny bit more work to use them (prepend the number with the string "http://www.ebay.com/itm/", and away you go), so one can't just click and go, but are people really that unwilling to go to the slightest effort? Noel

10 years, 1 month

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Components available

by COURYHOUSE＠aol.com

In a message dated 9/6/2016 11:55:46 P.M. US Mountain Standard Time, pontus at Update.UU.SE writes: On Tue, Sep 06, 2016 at 06:16:23PM -0700, Al Kossow wrote: > > I walked out of the donations meeting with the other curators today > who thought it was a piece of s**t and didn't want to take it, calling > it a 'dumpster fire' > Wow, what an attitude.. I don't know much about Unicomps but should lesser know machines but unusual machines be preserved as well? /P Right on... All machines are part of the overall history, true, some more significant than others but... ALL have a place. Good thing about lists like this is someone can be found to adopt some of these systems. Ed#

10 years, 1 month

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Why V.32bis modems are 14400 bps rather than 19200 bps (was Re: vt100 terminfo with padding for an actual vt100?)

by spacewar＠gmail.com

On Tue, Sep 6, 2016 at 5:18 PM, Eric Christopherson <echristopherson at gmail.com> wrote: > Is this why modems went to 14400 instead of 19200? No, that was because the V.32 modulation was easily extended to 12000 and 14400 bps by slightly expanding the QAM signal constellation, requiring a little better SNR on the line, but keeping other parameters the same and increasing the constellation size enough to get 19200 bps was not expected to work within available SNR on most POTS lines. That didn't stop some vendors from offering 19200 as a proprietary extension to V.32bis. It's known unofficially as V.32ter, but was never actually ratified as an ITU-T V-series recommendation. V.32 at 9600bps uses 1800Hz carrier, 2400 baud, and 32 carrier states (constellation points) using one trellis coding bit for 4 data bits, so effectively 4 data bits per baud, and 2400 * 4 = 9600 bps. V.32bis at 14400bps uses the same carrier and baud rate, and 128 carrier states (constellation points), with slightly more complex trellis coding, so effectively 6 data bits per baud, and 2400 * 6 = 14400 bps. (There's also a fallback to 12000 bps) V.32 and V.32bis are synchronous modulation, and when used with V.42 error control and a normal serial port configuration of 8N1, the modem effectively removes the start and stop bits (20% overhead on the serial port), though framing is added so that the throughput doesn't go up by that full amount. This is noticeable when running such a modem with a higher serial port baud rate (requiring flow control). For instance, a V.32 9600bps modem without V.42 would be able to transfer 960 characters per second, but with V.42 and a higher serial port rate with flow control, can exceed that. V.42bis compression can further improve the throughput provided that the data is compressible. To go beyond 14400 bps with conventional modulation and typical POTS line SNR requires more complex techniques, used in V.34 for up to 33600 bps. Abandoning conventional modulation and introducing a direct dependency on the PCM line code used within the PSTN allows up to 56000 bps PCM downstream and 33600 bps using V.34 modulation upstream (V.90), or 56000 bps PCM downstream and 48000 bps PCM upstream (V.92)

10 years, 1 month

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Complete DisplayWriter on eBay

by cctalk＠ibm51xx.net

Well, looks like the seller cancelled the bids and suddenly item is no longer available. Would like to believe it is a mistake but we all know better... -Ali

10 years, 1 month

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Components available

by COURYHOUSE＠aol.com

In a message dated 9/6/2016 10:13:30 P.M. US Mountain Standard Time, derschjo at gmail.com writes: On 9/6/16 9:09 PM, Jason Howe wrote: > On 09/06/2016 08:59 PM, Mark Linimon wrote: >> On Tue, Sep 06, 2016 at 06:16:23PM -0700, Al Kossow wrote: >>> There is also a Unicomp 18 bit minicomputer, paper tape reader, >>> and FFT processor circa 1972 in the garage (6ft rack) with full >>> documentation. >> I think it would be a damned shame if this went to recycling. I can't >> drive the 30 hours to come get it though. (tbh the '99 pickup truck >> does not have that kind of trip left in it anyways.) >> >> mcl > That sounds amazing. I'm in Seattle. My time is pretty tight these > days, but if someone up here was interested, I might be persuaded to > do a tag-team driving run over a weekend. My '81 Ford has plenty of > life left in her. > > I don't think I'm interested in it personally though, as I really have > no idea what an Unicomp minicomputer is in the grand scheme of things... > > --Jason > I'd join you on that trip, except I have no idea where I'd fit another 6' rack at the moment... ah, physical space is a harsh mistress... - Josh think of it this way... if you have an 8 something foot ceiling and you have a row of 6 foot tacks there is room for one more rack.... LAYING ACROSS THE TO SIDEWISE! Ed# <grin!>

10 years, 1 month

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Components available

by COURYHOUSE＠aol.com

I just do not do the long drive well any more I remember I would drive straight from AZ to San Jose non stop.... Now I think I would have to break it into a 4 day trip to be comfortable. When it comes to large trucks I just do not do them any more. The cost of shipping has gotten so high ( or maybe it is just the money is just worth less now) Ed# (wishing he was 40 years younger sometimes!) _www.smecc.org_ (http://www.smecc.org) In a message dated 9/6/2016 8:59:10 P.M. US Mountain Standard Time, linimon at lonesome.com writes: On Tue, Sep 06, 2016 at 06:16:23PM -0700, Al Kossow wrote: > There is also a Unicomp 18 bit minicomputer, paper tape reader, > and FFT processor circa 1972 in the garage (6ft rack) with full > documentation. I think it would be a damned shame if this went to recycling. I can't drive the 30 hours to come get it though. (tbh the '99 pickup truck does not have that kind of trip left in it anyways.) mcl

10 years, 1 month

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Apple IIGS on epay - local pickup in Seattle

by echristopherson＠gmail.com

Anyone want this? Less than 4 his remaining. Actually I'd love to have someone win it for me and sell it to me at VCFMW, but I've never arranged such a thing so I don't know what to estimate the cost to me would be. (Plus it probably won't stay at $49 for long.) I'd bid on it myself and then worry about getting it to me, but they explicitly day they don't accept third-party shippers.

10 years, 1 month

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The huge lot that had the NIB 8" floppies is now on ebay

by jnc＠mercury.lcs.mit.edu

> From: js > That would be my preference as well. A "ccebay at classiccmp.org" list. I think we all know that wouldn't work, for a number of reasons. > Or at least in an indication in the subject line "ebay: [topic]" so > they can get filtered out. This, however, I can definitely see as a good move. I will add such a tag to any eBay notification posts I make, and I encourage everyone else who posts such to do the same. > From: Peter Coghlan >> It's a tiny bit more work to use them > Any given posting to a mailing list is sent by one person and read by > many. If there is a small effort to be made, it makes more sense for > the sender to make it once than all the interested recipients to have > to duplicate the effort. Excellent point. And the "eBay:" tag idea follow this principle too, I will note... So let's remember to add that tag, everyone! Noel

10 years, 1 month

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Components available

by COURYHOUSE＠aol.com

Yes it needs to be saved... and yet with all the extra and duplicate stuff CHM has I bet they do not have one of these yet shun it... curious. kick their shins for me Al ok? Unfortunately not close for me to pickup. all this stuff is all part of the history.... Ed# In a message dated 9/6/2016 6:11:35 P.M. US Mountain Standard Time, aek at bitsavers.org writes: On 9/6/16 4:18 PM, Tom Gardner wrote: > A friend of mine died recently; he was amongst many things an electronics tinkerer and has a closet full of small parts in bin cabinets (resistors, capacitors, ICs, transistors, hardware, etc.). There is also a Unicomp 18 bit minicomputer, paper tape reader, and FFT processor circa 1972 in the garage (6ft rack) with full documentation. I walked out of the donations meeting with the other curators today who thought it was a piece of s**t and didn't want to take it, calling it a 'dumpster fire' Art was a friend of mine. Hopefully it can go someplace where it can be appreciated. Talk to Tom about it, unfortunately, time is short.

10 years, 1 month

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More mystery recycler boards - DEC, Fujitsu(??), Cipher, Emulex

by jules.richardson99＠gmail.com

Hi All, My local recycler contacted me to say he'd had some more old boards come in. They're scheduled to be sent for processing next Wednesday, but in a couple of hours I'm heading out of town for a few days - it's possible I can rescue some of it next Tuesday when I'm back, so in the meantime comments as to whether anything is useful/important/etc. would be appreciated! Apologies for photo quality, in a hurry and the only vacant spot was the floor of the employee bathroom :-( __Digital boards:__ M8014 M8012 M8061 (x2) M8013 - I think the 8012 is a boot/terminator board, so that sounds handy. The 8061's and M8013 are disk, I think - do modern emulators of the drives exist? If they do, maybe I should snag the controllers? Not sure about M8014. http://www.classiccmp.org/acornia/ub/d1.jpg - terminal board? DB25F and BNC on one edge. There was another similar board with two BNCs and a DB25F which was marked "VT100 basic video" on the underside, so I'm assuming this is related. http://www.classiccmp.org/acornia/ub/d2.jpg - 8085 CPU, ROM, RAM etc. Rows of transistors which perhaps suggests motor control, i.e. printer? http://www.classiccmp.org/acornia/ub/d3.jpg - related to d2.jpg?? __Fujitsu boards:__ At least, the main ICs are Fujitsu; there's no indication who the boards belong to. These are standalone boards, not ones that plug into a backplane. My hunch is that they're logic board pulls from old hard disks or tape drives - i.e. they're just garbage now. http://www.classiccmp.org/acornia/ub/f1.jpg - 2x 50-way connectors, switch in corner. PCB marked "KGKM B16B-934C-003" http://www.classiccmp.org/acornia/ub/f2.jpg - 2x 50-way connectors. PCB marked "CZGM B16B-9240-001" http://www.classiccmp.org/acornia/ub/f3.jpg - 2 x 50-way connectors, 1x 60W, 1x 26W. PCB marked "CZFM B16B-9230-0010A" http://www.classiccmp.org/acornia/ub/f4.jpg - 2 x 50-way connectors, 1x 60W, 1x 26W. PCB marked "KGFMU B16B-9830-0010A" __Cipher boards:__ There are two of these: http://www.classiccmp.org/acornia/ub/c1.jpg I suspect they're from some form of terminal (or maybe printer?), and now that they're separated from the rest of the system they're just junk. Note that someone seems to have scavenged a bunch of power transistors (or something) from them. __Emulex boards:__ I don't think any of these are the exact same models as the ones I rescued a little while ago, so I've included them here - but gut feeling is that they're still just tape (i.e. not SCSI) and so they're not worth the trouble. http://www.classiccmp.org/acornia/ub/e1.jpg - 2x50W, 1x?? (I forgot to make a note). CU0210402 on the PCB, CS0110202 on the "main" IC. http://www.classiccmp.org/acornia/ub/e2.jpg - 2x50W. TC0210201 on the "main" IC. There were a couple of others too each with a 60-way and pair of 26-way connectors; I suspect those are SMD. Chances are good I'll end up rescuing the DEC Mxxxx boards on Tuesday "just in case", but if anything else stands out then please shout; gut feeling is that they're PCBs from things that would have been quite wonderful once when complete but are now completely useless to anyone. cheers Jules

10 years, 1 month

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Components available

by vintagecomputer＠bettercomputing.net

I'm all over stuff like that.. especially with my TVT project. ?It has been a real slog finding correct looking vintage caps in particular. ?I wish I lived nearby! Sent from my Samsung device -------- Original message -------- From: Tom Gardner <t.gardner at computer.org> Date: 2016-09-06 4:18 PM (GMT-08:00) To: cctalk at classiccmp.org Subject: Components available Hi A friend of mine died recently; he was amongst many things an electronics tinkerer and has a closet full of small parts in bin cabinets (resistors, capacitors, ICs, transistors, hardware, etc.).? The ICs look mostly old. His wife and kids have no interest and would like to find a good home for these parts rather than recycle the lot. They are in Palo Alto CA Anyone interested in using them could just pick them up in the next week or so. Any other ideas?? Really hate to see these go to recycle. Tom (650) 941-5324 <tel:%28650%29%20941-5324>

10 years, 1 month

1
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Odd memory error in PDP-11/04

by ethan.dicks＠gmail.com

Hi, All, I've finally tracked down the simplest problems in my PDP-11/04 that's been sitting unused for many years (the one that we formerly used as a hardware test platform for Unibus COMBOARDs 30 years ago). The primary faults were a half-bad 7474 in the console (the flip-flop attached to the Run LED was not toggling when it should) _and_ an apparently bad DL11-W that isn't passing grant - for now replaced with a fully-functional module, but to be debugged later). What's happening now, since I can finally enter octal at the console, is when I change one location, 000000 for example, it echoes across multiple locations... To whit: I use the console to fill 000000 to 000040 with zeros, and verify they are all zeros. I deposit 177777 in 000000 and I get back the following... @L 1000 @D 177777 @L 1000 @E 001000 177777 @E 001002 004000 @E 001004 004000 @E 001006 004000 @E 001010 004000 @E 001012 004000 @E 001014 004000 @E 001016 004000 @E 001020 177777 @E 001022 004000 @E 001024 004000 @E 001026 004000 @E 001030 004000 @E 001032 004000 @E 001034 004000 @E 001036 004000 @E 001040 004000 @E 001042 177773 @E 001044 177777 I replace the 000000 at 000000 and get all zeros. So I appear to have two problems: 1) Depositing any value is echoed 000020 later. 2) Setting D10 in location 000000 results in D10 set in all the locations I have few spares for this machine. Lots of spares for my 11/34 (which I will want to test at some point soon), but this box (BA11-L) has a DD11DK not a DD11-PK, so I can't just upgrade in place. Does this sound like a dodgy CPU, dodgy RAM or both? I have this minimally loaded... M7263 PDP-11/04 processor M7847 16K MOS RAM (half loaded) M9312 with console ROM and papertape boot ROM (I have more ROMs available) M7856 - DL11-W strapped to defaults as a console/RTC many dual-height grant cards M9302 terminator UA-11 debugging board Oh... and I see while typing that it just started halting immediately after reset... so something just broke while it was powered on and running the console ODT. :-( I guess I'm back to low-level hardware debugging again. But in the meantime, any CPU/RAM symptom suggestions? I have the prints. I'm just looking for any "oh, yeah! That happened to me!" with "...and I fixed it by testing X and replacing the bad ones". All this so I can make a test bed for my M9313 boards and get them working again to fix the DWBUA on my VAX 8300... -ethan

10 years, 1 month

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Discovery 500

by aek＠bitsavers.org

something of interest if you're in the Phoenix area www.ebay.com/itm/291860761669

10 years, 1 month

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Manx

by COURYHOUSE＠aol.com

were you able to pull up link at archive.org ok I listed re: the terminals site is still on archive.org https://web.archive.org/web/20150720142308/http://terminals.classiccmp.org/w iki/index.php/Category:Alpha_Micro ta da...... Ed# In a message dated 9/6/2016 12:50:36 P.M. US Mountain Standard Time, pontus at Update.UU.SE writes: On Tue, Sep 06, 2016 at 08:01:17AM -0500, Jay West wrote: > > I did my best..... > I had no idea, thanks for all the extra work you put in for us. And a thanks to the maintainer of Manx for working with on it! It's a great resource. /P

10 years, 1 month

1
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Manx

by jwest＠classiccmp.org

It was written.... ------------------------------- > but Manx seems to be in the process of being relocated > Hasn't Manx been in that state for ages? /P --------------------------------- manx.classiccmp.org terminals.classiccmp.org computergraphicsmuseum.com/net/org The owner of those three sites has the unfortunate honor of being the only person ever asked to leave the free hosting at classiccmp.org. I gave him 30 days to get his stuff hosted elsewhere. I even backed up all his content and databases and put them on a 1.5TB external hard drive and shipped it to him (while keeping the sites running on the classiccmp server). Even though I told him 30 days, I gave him about 180 days before I said "you have to get these moved or I'll have to turn them off". After about another 90 days or more, I did redirects back to his home site so they at least weren't dead. The content and databases are still on the classiccmp server, although publicly inaccessible, just to make sure the new locations are up and running before I delete the content locally. I did my best..... J

10 years, 1 month

5
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RK05 packs

by jnc＠mercury.lcs.mit.edu

> So I have a fairly large group of 16-sector RK05 packs ... which I have > no use for, which I would like to trade for 12-sector RK05 packs Hi, all, I've had quite a few responses, so I think I have this covered now. Thanks to everyone who responded; if you haven't gotten a reply yet, I'm trying to catch up, you should hear soon! :-) Noel

10 years, 1 month

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The huge lot that had the NIB 8" floppies is now on ebay

by sales＠elecplus.com

http://www.ebay.com/itm/-/191960867958 Apparently the buyer backed out, and the entire lot is now available as ONE lot. There is no reserve. Cindy Croxton

10 years, 1 month

13
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Manx

by COURYHOUSE＠aol.com

the terminals site is still on archive.org https://web.archive.org/web/20150720142308/http://terminals.classiccmp.org/w iki/index.php/Category:Alpha_Micro ta da...... Ed# resending got error In a message dated 9/6/2016 9:07:15 A.M. US Mountain Standard Time, COURYHOUSE at aol.com writes: the terminals site is still on archive.org https://web.archive.org/web/20150720142308/http://terminals.classiccmp.org/w iki/index.php/Category:Alpha_Micro ta da...... Ed# In a message dated 9/6/2016 6:01:32 A.M. US Mountain Standard Time, jwest at classiccmp.org writes: It was written.... ------------------------------- > but Manx seems to be in the process of being relocated > Hasn't Manx been in that state for ages? /P --------------------------------- manx.classiccmp.org terminals.classiccmp.org computergraphicsmuseum.com/net/org The owner of those three sites has the unfortunate honor of being the only person ever asked to leave the free hosting at classiccmp.org. I gave him 30 days to get his stuff hosted elsewhere. I even backed up all his content and databases and put them on a 1.5TB external hard drive and shipped it to him (while keeping the sites running on the classiccmp server). Even though I told him 30 days, I gave him about 180 days before I said "you have to get these moved or I'll have to turn them off". After about another 90 days or more, I did redirects back to his home site so they at least weren't dead. The content and databases are still on the classiccmp server, although publicly inaccessible, just to make sure the new locations are up and running before I delete the content locally. I did my best..... J

10 years, 1 month

1
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Manx

by COURYHOUSE＠aol.com

the terminals site is still on archive.org https://web.archive.org/web/20150720142308/http://terminals.classiccmp.org/w iki/index.php/Category:Alpha_Micro ta da...... Ed# In a message dated 9/6/2016 6:01:32 A.M. US Mountain Standard Time, jwest at classiccmp.org writes: It was written.... ------------------------------- > but Manx seems to be in the process of being relocated > Hasn't Manx been in that state for ages? /P --------------------------------- manx.classiccmp.org terminals.classiccmp.org computergraphicsmuseum.com/net/org The owner of those three sites has the unfortunate honor of being the only person ever asked to leave the free hosting at classiccmp.org. I gave him 30 days to get his stuff hosted elsewhere. I even backed up all his content and databases and put them on a 1.5TB external hard drive and shipped it to him (while keeping the sites running on the classiccmp server). Even though I told him 30 days, I gave him about 180 days before I said "you have to get these moved or I'll have to turn them off". After about another 90 days or more, I did redirects back to his home site so they at least weren't dead. The content and databases are still on the classiccmp server, although publicly inaccessible, just to make sure the new locations are up and running before I delete the content locally. I did my best..... J

10 years, 1 month

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The huge lot that had the NIB 8" floppies is now on ebay

by cctalk＠beyondthepale.ie

Noel Chiappa wrote: > > > when folks just dump an ebay item number rather than a full link, those > > posts should die > > Why? It's a tiny bit more work to use them (prepend the number with the > string "http://www.ebay.com/itm/", and away you go), so one can't just click > and go, but are people really that unwilling to go to the slightest effort? > Any given posting to a mailing list is sent by one person and read by many. If there is a small effort to be made, it makes more sense for the sender to make it once than all the interested recipients to have to duplicate the effort. On the other hand, faulty spam filters may be more likely to stomp on messages containing urls so there may be also be a case for not including urls in postings if possible. Regards, Peter Coghlan.

10 years, 1 month

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PDP-8 core memory problems.

by mattislind＠gmail.com

For some time I have slowly been working on restoring our PDP-8 to operating condition. Here are some notes on the progress: http://www.datormuseum.se/computers/digital-equipment-corporation/pdp-8 It is sort of working now after reforming capacitors in the PSU, adjusting memory currents and replacing a 2N3639 in a MA, MB, PC (R211) board. But bit seven is still showing a 0 when trying to set it. I found an old note that I wrote somewhere in 1990 that indicated the same problem was present then as well so it hasn't happen lately. I have now concluded that the fault is in the core memory module itself. The sense winding is broken on bit plane 7. So what are my options? What are the chances that a repair is successful? It looks really complex to take it appart and get to to layer seven. Then to find the broken wire, somehow replace it and splice it together with the rest of the sense winding... Not an everyday job. Does anyone have a known good spare module? I have some MM15 modules for PDP-15 to trade with! Could a MM15 module be adapted to be used instead? It is completely different foot print and it is a three wire stack. The Russian stacks sold on Ebay? But what guarantees are that those work at all and can be adapted... Probably other memory currents and cycle time? Some other technology that can be used to make up for the missing bit plane. But what technology and how. With as little intrusion in the machine. I don't really want to replace the entire memory system with a battery backed SRAM... Any ideas, thoughts or a working PDP-8 core memory module is highly sought for! /Mattis

10 years, 1 month

4
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DEC Pro 350/380 Memory Cards - Interchangeability?

by robert.jarratt＠ntlworld.com

I have a 350 and 380. Neither work. The 380 is reporting a possible memory error on the LEDs. Will the 350's memory work in a 380 (or vice versa)? Regards Rob

10 years, 1 month

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Mattel Aquarius QD diskette drive

by lproven＠gmail.com

>From Adrian Graham on FB. I never knew it had one! https://www.youtube.com/watch?v=k0MpUMh80zk -- 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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Raised floor to be available for pickup in Sewell, NJ

by connork＠connorsdomain.com

Hi all, as per the subject some raised floor is about to become available. As much as I wanted and was going to grab this flooring myself, I can't. So this is the time for someone else who needs around 500-600 Sq.Ft. of raised flooring to go get it! This flooring is about 8in tall, so its not anything crazy like some of the newer taller stuff. The floor MAY be available, he is not 100% sure yet. The deal is they are selling the building and if the new owners do not want it, it is for grabs but must be picked up in the next 2-3 weeks. I am not sure, but you probably have to grab it all. The floor is located in Sewell, NJ as per the subject. It will be available for low or no cost depending on the interest level... Please contact Mike at: mbrotzman.jhu at gmail.com -Connor Krukosky

10 years, 1 month

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COMPUTERS: THEIR IMPACT ON SOCIETY, AFIPS Conference Proceedings, Volume 27, Pa

by COURYHOUSE＠aol.com

extra copy no DJ ex lib tight binding unmarked text pages aside from library stamps etc trade or? repy offlist Ed# SMECC www.smecc.org _ COMPUTERS: THEIR IMPACT ON SOCIETY, AFIPS Conference Proceedings, Volume 27, Part 2, 1965 Fall Joint Computer Conference. _ (https://www.amazon.com/COMPUTERS-Conference-Proceedings-Computer-Conference… omputers+their+impact+on+society) 1967

10 years, 1 month

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vt100 terminfo with padding for an actual vt100?

by billdegnan＠gmail.com

On Sep 5, 2016 12:05 PM, "Peter Coghlan" <cctalk at beyondthepale.ie> wrote: > > Fritz Mueller wrote: > > > > > On Sep 4, 2016, at 6:08 PM, william degnan <billdegnan at gmail.com> wrote: > > > > > > Even better, I found this post, this is my how to attach a vt100 to a VAX > > > 4000, you can apply to most any case > > > > > > Hi Bill, > > > > Thanks for you help! > > > > I will say that I have the getty running fine, baud rate, serial format, etc. > > all okay. Works just fine at 1200 baud and below. At higher baud rates, it > > seems like the vt100 is dropping some characters or bits after certain > > escape sequences, even with xon/xoff flow control enabled, so I?m *pretty* > > sure the issue is just with the padding values in the vt100 terminfo spec? > > > > I've got a VT102 Video Terminal User Guide (EK-VT102-UG-003) which contains > a table of fill characters required for different control codes / escape > sequences / display characters at each possible baud rate. Here's what it > lists for 19200 baud: > > 324 IND, LF, NEL, RI (Smooth Scroll) > 191 DECCOLM > 190 DECALN > 144 ED (132 Col) > 104 ED (80 Col) > 32 IND, LF, NEL, RI (Jump Scroll) > 6 EL (132 Col) > 4 EL (80 Col) > 7 DECINLM > 2 All others except RIS and DECTST > > The appendix also seems to hint that the VT100 has different requirements so > this may not be very useful to you but it might give you a rough idea. > > Regards, > Peter Coghlan. The link I provided has exactly what keystrokes and settings to use for 8/n/1 and 19200, plus a link to the vt100 manual. VT102 is not the same. B

10 years, 1 month

1
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Interact Model One Software

by davidpopovich＠rogers.com

Did you ever get your interact running? I can help you with cassettes if you need. There is also a way to use a wav file and play through an MP3 to cassette adapter Let me know Sent from my iPhone

10 years, 1 month

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RQDX3 as secondary MSCP controller

by Mark＠Misty.com

Hi, Last year I rescued a dual-wide 8-position q-bus backplane. I added the wire wrap to convert it from 18 to 22-bit, and now can boot BSD2.11 from CMD/CQD SCSI controller and CF card at DU0, via an AztecMonster CF-SCSI adapter. If I remove the SCSI controller, I can boot XXDP >from an RQDX3 connected floppy drive at DU0. My CPU is an M8192 from the scrap-card guy on e-bay, and I'm using an M7195 SLU/ROM card for console. It's got 23-14534/23-146E4 ROMs. I'm using a 2MW Clearpoint RAM card. I'm fabricating a cool desktop flexiglass case, so I can put the tiny-pdp11/73 on the desk at work. The difficulty I am having is I would like to configure the system with both MSCP controller cards installed, so I can boot from either SCSI or floppy, preferably with the SCSI still starting at DU0 so my BSD2.11 CFs remain portable to my other system. I changed the W1-W11 jumpers on the RQDX3 for 17760334 secondary MSCP address. And, I installed W12 to start at MSCP unit number 4. I used the menu on the SCSI controller to set it for DU0-DU3-only device mappings (SCSI ID 0-3). My understanding is each controller needs the different CSR, and non-overlapping MSCP unit numbers. I confirmed I (finally) got the RQDX3 address jumpers because the bootrom memory map now displays 17760334-17760336 as in use, as well as 17772150-17772152 for the SCSI controller. I was expecting that I'd now be able to boot from the floppy at DU4 (BOOT> DU 4), but after a long pause, I get ?BOOTROM-F- DU 4 device error. I also tried "BOOT> 17760334 DU 4", but still no joy. Another oddness I noted was that with my original RQDX3 config, if I plug the M7516 ethernet card in, that breaks booting from floppy. Are there some other jumper changes I need to make on the RQDX3? Does anyone have any other suggestions about what I might be doing wrong? Mark -- Mark G. Thomas (Mark at Misty.com), KC3DRE

10 years, 1 month

2
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Power Supply capacitor physical size

by jrr＠flippers.com

On 09/03/2016 10:07 AM, Adrian Graham wrote: > On 03/09/2016 17:39, "Jon Elson" <elson at pico-systems.com> wrote: > >> On 09/03/2016 10:56 AM, Noel Chiappa wrote: >>>> From: Jon Elson >>>>> needs new caps since one of the 1000uF 16V ones has bulged badly. >>>>> ... >>>>> If I go up to 25V I can get 16mm diameter which is the size of the old >>>>> ones. >>>> Capacitors that are subjected to high AC ripple current may need the >>>> large surface area for cooling. >>> Interesting point - but in his particular case, he should be OK replacing the >>> old 16V cap with a similar-sized modern 25V cap? >>> >>> >> Similar size - then no problem! But, some new cap types are >> VASTLY smaller than the caps from 40 years ago. > Hence my question, I'll stick with the same size but higher voltage. > > Cheers! > You do have to consider where in the circuit the capacitor is. If this is a switching power supply (as I suspect) then if the cap is after the switching transformer it MUST be a low ESR, high temp cap - otherwise it won't last very long. If this is on the primary side and is simply filtering the input rectified AC then ESR is not as big a problem, but you need a good physical size if the switching supply puts out a fair bit of current due to heating effects of low frequency ripple. So, it all depends. For general repair I would get the best grade of capacitor - say Panasonic - with a nice low ESR and away you go. John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"

10 years, 1 month

2
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Data Genera MPT/100

by lbickley＠bickleywest.com

I have a nice, clean DG MPT/100 I'm in the process of restoring. As you might expect, I contacted Bruce at "Wild Hare" to see what documentation and software he had for the critter. He was able provide some helpful PDF documentation - but NO schematic or software. Without software, the MPT/100 is essentially useless. If anyone has the 5.25" floppy system and/or diagnostic diskette sets for this workstation I'd really appreciate images of same. If you have the floppies, but no images, and you lend me your floppies, I'll make images and make them publicly available and return your floppies (assuming you want them back). If by some stroke of luck you have the schematics for the MPT/100 (DG part numbers: Mainboard 001-002963 and Keyboard 001-002688) I could really use them :) The MPT/100 contains the DG microNOVA mN602 CPU and 64K of system RAM plus video memory. Software for the MPT/100 includes a set of Diagnostic diskettes and the MP/OS system diskettes. Regards, Lyle -- 73 AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

10 years, 1 month

1
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Wanted - two 27C010-capable EPROM emulators

by classiccmp＠philpem.me.uk

Hi there, Does anyone have a pair of spare EPROM emulators which are capable of emulating 27C010 EPROMs? Ideally two identical ones, but that's optional. I'm trying to reverse-engineer a Securicor Datatrak MkII navigation receiver and build a signal generator which can emulate a chain of Datatrak transmitters. I'm part of the way there, but I've hit something of an impasse: * My emulator isn't good enough to run the firmware on a PC (it crashes when the RTOS starts to boot). * My knowledge of the hardware is full of holes (especially the simple-but-custom ASIC). Porting a monitor ROM using EPROMs would take a fair while, even with the HP16700A to use as a "debugger". I'd like to try patching the firmware, but with bare EPROMs that'll take a while to get right. I could swear these things were as common as housebricks on ebay a year or so ago, but now they're not quite so common... Incidentally, if someone (preferable in the EEA) has a spare HP 16717A acquisition card (for the 16700A series logic analysers) for sale, I'd be very interested in getting another one -- my second 16717A seems to have died while in storage, and spying on the 68k has eaten up all the pod inputs on my one working card. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

10 years, 1 month

3
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Apple IIgs and (separately) Big Apple collection, Baltimore MD area (USA)

by brad＠facefault.org

Both these locations are NW of Baltimore, Maryland. I have no relationship with either seller but am willing to do in-person recon for people on this list if required. Large lot of Apple stuff, $1200 Mostly Macs but a good amount of Apple II stuff (including a //c with all original boxes and paperwork) Westminster, MD http://baltimore.craigslist.org/sys/5763302040.html Apple IIGS, $100 3.5 and 5.25 floppy drives, monitor, keyboard, mouse New Windsor, MD http://baltimore.craigslist.org/sys/5746461980.html ? Brad Ackerman N1MNB PGP: 0x9F49A373 brad at facefault.org <*> http://bsa.smugmug.com/

10 years, 1 month

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DCS 2400 or System 2400?

by bobalan＠sbcglobal.net

I found a simple manual for a "System 2400" 24 bit computer. Can be downloaded here: http://dvq.com/docs/dcs2400o.pdf There's a reference to "dcs 2400" and on the title page, "Digital Computer" from the rep. Gene Baumgardner. Does anyone have more info on this computer, or the company who made it? It looks like an interesting system. -Bob -- Vintage computers and electronics www.dvq.com www.tekmuseum.com www.decmuseum.org

10 years, 1 month

1
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Power Supply capacitor physical size

by jnc＠mercury.lcs.mit.edu

> From: Jon Elson >> needs new caps since one of the 1000uF 16V ones has bulged badly. >> ... >> If I go up to 25V I can get 16mm diameter which is the size of the old >> ones. > Capacitors that are subjected to high AC ripple current may need the > large surface area for cooling. Interesting point - but in his particular case, he should be OK replacing the old 16V cap with a similar-sized modern 25V cap? Noel

10 years, 1 month

4
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DEC Indicator Panels pag

by michael.99.thompson＠gmail.com

> > On Thu, Aug 18, 2016 at 8:56 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu> > wrote: > > So, I've been working for a while on a page about DEC indicator panels > (the > > standardized 36x4 light arrays which go into a 19" rack, with an inlay to > > customize it to a particular device). It's online now, here: > > > > http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html > > > > Does anyone happen to have a good image of an RK08 panel, or an RF11, > which I > > can use here? > > > > Even better, does anyone know of, or have images of, panels which are not > > listed here? (I am not including the unknown 'RK' panel in the RSTS > document, > > which will be the subject of a separate message.) > > > > Thanks! > > > > Noel > How about PDP-9 panels? TC02, 18-bit DECtape controller <https://4310b1a9-a-11c96037-s-sites.googlegroups.com/a/ricomputermuseum.org…> TC59, 18-bit Magnetic Tape controller <https://4310b1a9-a-11c96037-s-sites.googlegroups.com/a/ricomputermuseum.org…> -- Michael Thompson

10 years, 1 month

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Power Supply capacitor physical size

by witchy＠binarydinosaurs.co.uk

Hi folks, Looking at the PSU of my Lisa's ProFile after it died gracefully not so long back and it obviously needs new caps since one of the 1000uF 16V ones has bulged badly. While I'm replacing that one I'll do the 47uF 250V ones too. And the mains filters but I've got a stock of spares for them already. Apologies for what's probably a dumb question, but when it comes to cap replacement I know I can go up a notch if the required capacitance or voltage isn't available so 25V and 400V is ok, but what about physical size? I can get the correct capacitance/voltage but they're physically much smaller than the ones I'm replacing, like 10mm instead of 16mm diameter. If I go up to 25V I can get 16mm diameter which is the size of the old ones. Am I worrying for nothing? Cheers, from a room not filled with RIFA smoke for once :) -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

10 years, 1 month

3
2
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Big Apple/Atari/Commodore/TRS-80 sale today in Orange, CA

by brendan＠bslabs.net

https://orangecounty.craigslist.org/gms/5763569283.html I went to this sale last week and picked up a DECmate and some Mac stuff, the amount of stuff he had was remarkable. Sale is today only. Some of the cool stuff I saw last week: - 2 x ADM-3 terminals - Quadra 950, WGS 95, WGS 9150 - 2 x Macintosh Portrait Display - lots of classic Macs, some PPC AIOs (52xx), G3/G4 iMacs - Apple Studio Display (the original blue-colored LCD) - Centris 650, beige G3s - so much other Atari/Commodore/TRS-80 stuff Brendan

10 years, 1 month

1
0
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DEC Indicator Panels page

by jnc＠mercury.lcs.mit.edu

So, I've been working for a while on a page about DEC indicator panels (the standardized 36x4 light arrays which go into a 19" rack, with an inlay to customize it to a particular device). It's online now, here: http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html Does anyone happen to have a good image of an RK08 panel, or an RF11, which I can use here? Even better, does anyone know of, or have images of, panels which are not listed here? (I am not including the unknown 'RK' panel in the RSTS document, which will be the subject of a separate message.) Thanks! Noel

10 years, 1 month

5
10
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VCF videos ahoy

by cctalk＠snarc.net

Tonight we posted a bunch of old (1997-2007) VCF West videos. Please see http://vcfed.org/wp/2016/09/03/many-more-videos-are-posted/. Many more will be posted soon.

10 years, 1 month

1
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Docs for DEC MPS Intel 8008 Development System scanned

by COURYHOUSE＠aol.com

Jack, how many of these are there out there? ... Nice front panel on it too! Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 8/26/2016 9:41:04 A.M. US Mountain Standard Time, j at ckrubin.us writes: The MPS (MicroProcessor Series) was an attempt by DEC to introduce an Intel 8008-based system as a cost-effective replacement for minicomputers used in process control. The system has its own 14-bit blinkenlights front panel for accessing the 8008. Docs here: https://www.dropbox.com/sh/bezyixp76x2q3i4/AAAdGzzycbTIys1Ftde2BpR5a?dl=0 I'll leave the docs up for a week or so. Jack

10 years, 1 month

1
0
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Atari / GEM docs Free to good home (York, UK)

by pete＠dunnington.plus.com

These are primarily for Atari ST, mostly photocopies in A4 ring binders, to go as one lot: * ISV Development System documentation for Atari 520ST includes BIOS listing and more. ring-bound The following items are probably provided as part of this... * Listing of GEM "hello" program (GEM sample desktop accessory) Module: HELLO, by Tom Holander, Digital Research Feb 1986 ring-bound photocopy * Atari ST BASIC Source Book, 1985 ring-bound, printed original * Atari Logo Source Book 1985, small spiral-wire-bound published copy * GEM PRogrammer's Guide - Volume 1: VDI GEM PRogrammer's Guide - Volume 2: AES 1985, Digital Research, ring-bound photocopy * GEM DOS 1.0 Spec Version 13 May 16 1985 Digital Research "DR Confidential: Internal Use Only. Not to be copied or given to customers." ring-bound photocopy * "The Long-Awaited 'Line-A' Document" describes "quick-and-dirty" graphics access using 68000 Line A exception. Ring-bound with GEM DOS 1.0 Spec * ST Series BIOS Rev.A 2/13/85 (Atari 130 ST and 520 ST) "Atari Corporation Confidential" Ring-bound with GEM DOS 1.0 Spec I need to move these before Saturday 17th September (2 weeks from now). If they're not claimed by then, I'll donate them to The Computer Sheds (http://www.computermuseum.org.uk). Because of the weight, it would be expensive to ship these things, though if anyone is really keen I'll consider it. Collection from York would be greatly preferred (tea and biscuits supplied) - or I can probably take them to the DEC Legacy Event in Windermere for collection on the weekend of 15/16th October (pay for your own tea and biscuits). -- Pete Pete Turnbull

10 years, 1 month

4
6
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and one more I almost missed... FTGH

by pete＠dunnington.plus.com

How many people remember the Wren Executive System? Or have even heard of it? Well, you can now own the manual for this not-very-successful sort-of-like-an-Osborne luggable! Free to good home from York, UK. Loose pages included. Terms and conditions apply. YMMV. E&OE. -- Pete Pete Turnbull

10 years, 1 month

1
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more stuff FTGH (York, UK)

by pete＠dunnington.plus.com

And finally, some ancient and thus debatably classic software: * Zenith Data Systems - Microsoft Windows 3.0/3.1 Actually just the manuals (yes, once upon a time, in a universe far far away, Windows had actual manuals) and license. * Tulip Computers Windows 386 V2.10D Ring binder including User Guide, Desktop Applications manual, Write manual, Paint manual 4 x 3.5" HD disks - 3 for Windows, 1 for Tulip utilities * AppleShare 4.0 boxed, assorted manuals etc, 4 x 3.5" HD disks, 1 x CDROM includes the serial number needed to validate your server * HiSoft C Integrated Compiler/Editor manuals 1985-88 for CP/M 2 x 3" disks (presumably for Amstrad PCW) All in the original binder, with serial no. * HiSoft Nevada Cobol CP/M compiler/editor manuals, 3" disk for Amstrad PCW, with s/no. I need to move these before Saturday 17th September (2 weeks from now). If they're not moved by then, I'll donate them to The Computer Sheds (http://www.computermuseum.org.uk). Because of the weight, it would be expensive to ship these things, though if anyone is really keen I'll consider it. Collection from York would be greatly preferred (tea and biscuits supplied) - or I can probably take them to the DEC Legacy Event in Windermere for collection on the weekend of 15/16th October (pay for your own tea and biscuits). I need to move these before Saturday 17th September (2 weeks from now). If they're not claimed by then, I'll donate them to The Computer Sheds (http://www.computermuseum.org.uk). Because of the weight, it would be expensive to ship these things, though if anyone is really keen I'll consider it. Collection from York would be greatly preferred (tea and biscuits supplied) - or I can probably take them to the DEC Legacy Event in Windermere for collection on the weekend of 15/16th October (pay for your own tea and biscuits). -- Pete Pete Turnbull

10 years, 1 month

1
0
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Free to good home (York, UK)

by pete＠dunnington.plus.com

I'm trying to clear some space so I can actually get to classic things I want to play with, so I have the following to give away if anyone is interested: * Cromemco 16FDC Floppy Disk Controller Instruction Manual (2 copies) * Cromemco D+7A Input/Output Module Instruction Manual * Digital (DEC) BC19V-02 cable (DB25 to DD50) * HP JetDirect card (10base2, 10baseT, Localalk) * 5 x Iomega/Fuji ZIP (PC100) disks, mostly new unused * Box of 3.5" DSDD and HD floppies with assorted software, including Borland Turbo Assembler Borland Turbo Debugger Borland Turbo Profiler 3 sets of 4 disks : Borland Turbo Pascal for Windows set of 3 Borland Turbo Pascal Professional disk: Install/Turbo Vision/Compiler Help/BGI/Utilities TPCX Computer Associates SuperProject 3-user Lanpak Microsoft MS-DOS 5 Upgrade about 28 R:BASE disks, mostly V.4.0 about 25 CD-ROM driver disks (HD not DD) a couple of 3Com Etherdisks 5.01 (HD not DD) about 20 Logitech Mouseware 8.2 Multilingual disks: 2 x Disk 1 of 2 18 x Disk 2 of 2 * The Penguin Computing Book, Susan Curran and Ray Curnow, Penguin Books 1983, ISBN 0140465995 * Mathematical Logic for Computer Science, M. Ben-Ari, Prentice Hall 1993, ISBN 013564139X * 8086/8088 16-Bit Microprocessor Primer, Christopher L Morgan and Mitchell Waite, Byte Books 1982, ISBN 0070431094 * Fundamentals of Operating Systems, 4th Edition 1990, A.M.Lister and R.D.Eager, Macmillan 1979-1988, ISBN 0333469879 * Structured Computer Organisation, 3rd Edition 1990, Andrew Tanenbaum, Prentice-Hall 1990, ISBN 0138528721 * Acorn Archimedes 400 Series User Manual, and Welcome Guide * Assembly Language Programming for the Electron (Addison Wesley, John Ferguson and Tony Shaw) ISBN 0201145278 * a collection of Archive (Acorn Archimedes users' magazine) from Vol.1 No.1 (Oct.1987) to Vol.5 No.1 (Oct.1991) plus half a dozen extras. * 10 Electron User cassettes, Oct.1989 - July 1990. * manuals and stuff for BBC Micro: Wordwise Plus manual, 2nd Addition (sic), 1985 (Computer Concepts) ViewStore User Guide, 1st Edition, 1985 (Acorn, Acornsoft) ISBN 0907876455 View User Guide, 2nd Edition, 1986 (Acorn, Acornsoft) ISBN 1852500212 View User Guide, 1st Edition, 1985 (Acorn, Acornsoft) ISBN 0907876277 Into View, 2nd Edition, 1984 (Acorn, Acornsoft) ISBN 0907876811 View Guide, 2nd Edition, 1983 (Acorn, Acornsoft) ISBN 0907876803 View Reference Card (SBB31/R), 1985 (Acorn, Acornsoft) ViewSheet Reference Card (SBB07/R), 1984 (Acorn, Acornsoft) Electron Plus 1 User Guide, 1984 (Acorn Computers) Graphs and Charts, 1st Edition, 1982 (Acorn, Acornsoft) ISBN 0907876048 Graphics Extension ROM User Manual (Acorn, Acornsoft) (copy; not original, but comb-bound) A few of the above are also going on a well-known auction site, but naturally ClassicCmp subscribers have priority :-) I need to move these before Saturday 17th September (2 weeks from now). If they're not moved by then, I'll donate them to The Computer Sheds (http://www.computermuseum.org.uk). Because of the weight, it would be expensive to ship many of these things, though if anyone is really keen I'll consider it. Collection >from York would be greatly preferred (tea and biscuits supplied) - or I can probably take them to the DEC Legacy Event in Windermere for collection on the weekend of 15/16th October (pay for your own tea and biscuits). -- Pete Pete Turnbull

10 years, 1 month

1
0
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Atari / GEM docs Free to good home (York, UK)

by pete＠dunnington.plus.com

These are primarily for Atari ST, mostly photocopies in A4 ring binders, to go as one lot: * ISV Development System documentation for Atari 520ST includes BIOS listing and more. ring-bound The following items were probably provided as part of this... * Listing of GEM "hello" program (GEM sample desktop accessory) Module: HELLO, by Tom Holander, Digital Research Feb 1986 ring-bound photocopy * Atari ST BASIC Source Book, 1985 ring-bound, printed original * Atari Logo Source Book 1985, small spiral-wire-bound published copy * GEM PRogrammer's Guide - Volume 1: VDI GEM PRogrammer's Guide - Volume 2: AES 1985, Digital Research, ring-bound photocopy * GEM DOS 1.0 Spec Version 13 May 16 1985 Digital Research "DR Confidential: Internal Use Only. Not to be copied or given to customers." ring-bound photocopy * "The Long-Awaited 'Line-A' Document" describes "quick-and-dirty" graphics access using 68000 Line A exception. Ring-bound with GEM DOS 1.0 Spec * ST Series BIOS Rev.A 2/13/85 (Atari 130 ST and 520 ST) "Atari Corporation Confidential" Ring-bound with GEM DOS 1.0 Spec I need to move these before Saturday 17th September (2 weeks from now). If they're not claimed by then, I'll donate them to The Computer Sheds (http://www.computermuseum.org.uk). Because of the weight, it would be expensive to ship these things, though if anyone is really keen I'll consider it. Collection from York would be greatly preferred (tea and biscuits supplied) - or I can probably take them to the DEC Legacy Event in Windermere for collection on the weekend of 15/16th October (pay for your own tea and biscuits). -- Pete Pete Turnbull

10 years, 1 month

1
0
0 0

RC2016/10 COMPETITION ENTRY IS OPEN!

by mark＠wickensonline.co.uk

RC2016/10 COMPETITION ENTRY IS OPEN! I am pleased to announce that Retrochallenge 2016/10 ? the ?October? edition of the Retrochallenge - will run and is now open to entrants! Roll-up Roll-up! Get those thinking caps on and come up with an excellent retro-computing project. Why not? The Retrochallenge 2016/10 competition will run from October 1st to the end of the month. Blog entries should be complete by midnight on Monday 31st October GMT. I would like to extend the warmest welcome to the fantastic John W. Linville who is taking over the running of the October competition and, if he gets the bug, make take the reins for future Retrochallenge Competitions. If you would like to enter please email john using the address ?linville @ /tuxdriver.com?/(removing spaces)//with your name (or handle), a brief synopsis of your project and a URL for your blog. See the website http://retrochallenge.org for more details. ABOUT RETROCHALLENGE In a nutshell, the RetroChallenge is a loosely disorganised gathering of RetroComputing enthusiasts who collectively do stuff with old computers for a month. The event is very much open to interpretation? individuals set there own challenges, which can range from programming to multimedia work; hardware restoration to exploring legacy networking? or just plain dicking around. It really doesn?t matter what you do, just so long as you do it. While the RetroChallenge has its competitive side, it?s not really a contest? it?s more like global thermonuclear war ? everyone can play, but nobody really wins. COMPETITION RULES 1. Retrochallenge commences 1st October 2016 and runs until 31st October 2016. 2. In order to qualify, computer systems must be vintage (this used to be defined as 10 years old, but typically ?vintage? is older than that now ? don?t expect to be accepted if you are using a box capable of running Windows XP for example!). Exceptions will always be made for exotica! 3. Gaming consoles and PDAs qualify if they were made in the previous century. 4. Where appropriate, replica hardware and emulators may be used. 5. Entrants are responsible for adequately documenting their projects and submitting occasional updates during the contest, preferably with an announcement on twitter with #retrochallenge. 6. Projects may encompass any aspect of retro-computing that tickles the fancy of the individual entrant. 7. Winners will be carefully selected and adulation bestowed. 8. Have fun!

10 years, 1 month

1
0
0 0

Wanted PATA HBA and IDE/UDMA Drive

by t.gardner＠computer.org

Hi: Looking for a PATA HBA (PCI, EISA or ISA) and if available an associated ATA/IDE drive preferably UDMA/33 but no faster than UDMA/100 This would likely be found in a PIII Pro or earlier system built prior to 1997 (I think the Natoma 440FX PII was the first to integrate IDE into the Southbridge) It might be from a later system as an expansion add in. This maybe a repeat request but I don't recall seeing my first request posted to the list - sorry if I'm wasting time. Any reasonable offer will be considered. Thanks Tom t.gardner at computer.org 650 941-5324

10 years, 1 month

3
2
0 0

X Windows System Design Principles, a lecture by James Gettys

by tlindner＠macmess.org

I think it is dated 1988. https://www.youtube.com/watch?v=KdmNHM9BKY0 Interesting fact: His name is Gettys. Interesting quote: "We should never have done [the] Arc [drawing command], we should have done some spline implementation." -- -- tim lindner "Proper User Policy apparently means Simon Says."

10 years, 1 month

2
1
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How to build an ASCII CRT terminal, circa 1967

by COURYHOUSE＠aol.com

same as univac uniscope or? In a message dated 8/31/2016 8:41:06 A.M. US Mountain Standard Time, aek at bitsavers.org writes: On 8/31/16 8:35 AM, Paul Berger wrote: > it would be possible to have it generate 7 bit ASCII > code by using an appropriately "programmed" interposer under the keys. it does say the keyboard generates ASCII on pg 3-2 of the maint manual..

10 years, 1 month

1
0
0 0

How to build an ASCII CRT terminal, circa 1967

by aek＠bitsavers.org

Magnetorestrictive delay lines and a charactron. http://bitsavers.org/pdf/rca/terminal/70_750/70-01-752-U_Model_70_752_Video… We got one (no keyboard) a couple days ago with the manual. I'm still cleaning it up. It had something nesting in it and the inside has sunflower seed husks in it. It was made with plastic DIP ICs, no idea of the logic family. The keyboard was made by IBM, don't know what character code it produces. Pretty funky if it encodes ASCII.

10 years, 1 month

4
5
0 0

BA123 Side panels and Stuck TK50

by shadoooo＠gmail.com

Hello, > The same cabinet has a TK50 and I foolishly put a cartridge into it and > now it won't come out. It is called being 'stuck'. How do proceed to > get this TK50 cartridge out? Error 'stuck' means that the tape has been "glued" to the head because of the effect of the tape binder being converted to adhesive due to age and moisture. You can remove the cartridge in this way: - pull the drive out of the machine - carefully unscrew the metal cover over the internal reel and the head to expose it - slowly insert a paper sheet between the tape and the head, in the same direction of the tape, to detach it without damage - slowly rotate the front motor (from bottom side) in way to rewind all the tape from the back reel to the cartridge reel - detach the tape leader if necessary - now keep the electromagnetic cartridge unlock mechanism pressed, and remove the cartridge from the drive A tape in this condition of striction is probably unusable anyway, unless you back it up a little in an oven, but even so it could be readable just for a couple of hours > Also, the TQK50 controller never saw the drive and I was wondering if > the PROM's (after 30 years) on the board lose their data? Well, I never seen an UV-EPROM loose it's data, unless the erase window cover is missing and the memory exposed to the sun light. Andrea

10 years, 1 month

6
7
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BA123 Side panels and Stuck TK50

by dj.taylor4＠comcast.net

This is real trivia but I have a BA123 cabinet (MicroVax II) and there a screws that hold the side panels in place, and mine are missing. Does anyone know the type of screw I should go look for at the hardware store? The same cabinet has a TK50 and I foolishly put a cartridge into it and now it won't come out. It is called being 'stuck'. How do proceed to get this TK50 cartridge out? Also, the TQK50 controller never saw the drive and I was wondering if the PROM's (after 30 years) on the board lose their data?

10 years, 1 month

2
1
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It's Terminal Week on RetroBattlestationst

by fozztexx＠fozztexx.com

It's Terminal Week on RetroBattlestations! https://redd.it/500myn This week is about those devices that you connect to a computer so that you can read output and provide input through a keyboard. The oldest terminals used paper for the display, and in the mid '70s the "glass TTY" became much more common. In the early days terminals had very little smarts in them. Some were electro-mechanical, later they had some circuitry, and by the late '70s almost all were using microprocessors inside. In fact if it weren't for a terminal company, Intel wouldn't have designed the 8008 microprocessor, the grandfather of the x86! Terminal Week is from August 28th to September 3rd. To participate in the contest you need to make a new post to RetroBattlestations of a picture or video that you shot of a computer terminal for this contest. At the end of the week 2 winners will be selected based on the oldest/newest setups as described above and will receive custom flair. In addition to the flair winners 3 other winners will be randomly selected. Each winner will receive their choice of two retro stickers: http://imgur.com/a/iAS5T -- Follow me on twitter: @FozzTexx Check out my blog: http://insentricity.com

10 years, 1 month

6
5
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It's Terminal Week on RetroBattlestationst

by vintagecomputer＠bettercomputing.net

I don't have anything that'll be competitive with the teletype guys but I'll enter anyway. ?For clarity.. does my CT1024 count as a terminal even though it does not possess a dedicated screen? Sent from my Samsung device -------- Original message -------- From: Chris Osborn <fozztexx at fozztexx.com> Date: 2016-08-30 7:06 AM (GMT-08:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: It's Terminal Week on RetroBattlestationst It's Terminal Week on RetroBattlestations! ? https://redd.it/500myn This week is about those devices that you connect to a computer so that you can read output and provide input through a keyboard. The oldest terminals used paper for the display, and in the mid '70s the "glass TTY" became much more common. In the early days terminals had very little smarts in them. Some were electro-mechanical, later they had some circuitry, and by the late '70s almost all were using microprocessors inside. In fact if it weren't for a terminal company, Intel wouldn't have designed the 8008 microprocessor, the grandfather of the x86! Terminal Week is from August 28th to September 3rd. To participate in the contest you need to make a new post to RetroBattlestations of a picture or video that you shot of a computer terminal for this contest. At the end of the week 2 winners will be selected based on the oldest/newest setups as described above and will receive custom flair. In addition to the flair winners 3 other winners will be randomly selected. Each winner will receive their choice of two retro stickers: http://imgur.com/a/iAS5T -- Follow me on twitter: @FozzTexx Check out my blog: http://insentricity.com

10 years, 1 month

2
2
0 0

DTC01 DECtalk repaired

by spacewar＠gmail.com

Thanks to the source code for the MAME DTC01 DECtalk driver, which is apparently the only place there is any information on the self-test error LED codes, I determined that there was a failed HM6264LP-12 static RAM chip. The error code narrows it down to a pair, and swapping narrowed it down to a single chip. After replacement with an HM6264ALP-12, and powering up, I was delighted to hear "DECtalk version one point eight is running." At some point if I get sixteen 27128 or 27C128 EPROMs, or maybe eight 27256 or 27C256 with four jumper changes on the board, and two 82S191 or equivalent PROMs, I might upgrade it to 2.0. I've only ever seen firmware versions 1.8 and 2.0, but there are rumors of an intermediate version and a version 2.1. Does anyone have these?

10 years, 1 month

1
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CHM

by dave.g4ugm＠gmail.com

Folks, I am going to be in San Francisco in a few weeks' time, but only for about a day and half. I could spare 2 hours at CHM but is it worth dragging myself up there on a Sunday when there are no working exhibits, and I will only have two hours. Dave.

10 years, 1 month

7
7
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RX02 and RXV11 emulators

by jwsmail＠jwsss.com

I got interested in a thread which mentioned RX02 emulators by C H Dickman, and found a nice page on that, which is still live. However, one of the pages was on geocities, and though there are about 10 or 15 hits for the path below, noone had any links which i could find which hit the original project. There are a number of dead domains on both the RX01 page and elsewhere. The link below has the listings, the zip file, all captured and downloadable. http://www.chdickman.com/rx02/ https://web.archive.org/web/20090114185527/http://www.geocities.com/saipan5… http://torok.info/computing/pdp11/rx02/index.htm The Bella Torok project extended the Dickman work to use an Arduino. The design however is not minimal in terms of what you really need to do to get a working version with the Arduino. A lot of the wires are building out a board which can be had for about 5 bucks which adds a 16 character display and 4 buttons to an arduino. He also implements an SD card on the arduino, all using a lot of wiring. If one buys the Arduino, the 16x2 / button shield, and one of the generic SPI Sd cards, I suspect there is way less involved in making up the Torok version. He also has a Raspberry Pi version which might be interesting too. thanks jim

10 years, 1 month

1
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AT&T 3b2, IBM RT, others

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > Wish the seller would part it out (and ship). So, send the seller an eBay message saying you're interested in some of the items, and you're in contact with other collectors who are interested in other items, but: you don't want to buy the entire lot; and suggest to the seller that they will i) sell it faster, and ii) get more money in total, if they split the lot up, and are willing to ship things. (Assuming, of course, that it doesn't sell as-is.) (Speaking of getting more money, did you all see the PDP-11/34 system that included a couple of RL01's and some RM03's? It only drew a single bid, and went for $2K. I was vaguely interested in the RM03's, but didn't want to deal with the RL01's, so I didn't bid. Wonder how many others made similar calculations? And I wonder if they buyer will actually use all of it, or put part of it - perhaps the RL01's or the RM03's - in a corner to gather dust? Wuz gonna send them a message of the sort I suggested above, but it sold.) Noel

10 years, 1 month

2
1
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Motorola 88000 system on Epay

by jwsmail＠jwsss.com

a bit pricy, but it seems to be able to be powered up. Looks to be 25mhz according to the boot screen. The seller has done the smoke test for the buyer, and was even going to replace a dead NVram to verify that one message about the config being bad was recoverable. 16mb ram. Seller has done some reasonable searching there won't be much available, but if one wants a 88000 system this isn't bad. Motorola-8120-MC88000-RISC-System-/ http://www.ebay.com/itm/302054107748 I've bought from this vendor, but otherwise no other affiliation. thanks Jim

10 years, 1 month

1
0
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AT&T 3b2, IBM RT, others

by seefriek＠gmail.com

I'd really like the AT&T 4425 terminal, which doesn't seem to have been claimed. I spent a couple of years with one on my desk. Any chance they'd ship? My wife and I have an agreement that if I bring home any more VME kit I have to get rid of an equivalent tonnage of other things. So unless that Motorola tower is an 88200 or something suitable esoteric, I probably need to pass. The E&S box looks like a Sun 3/110 or 4/110 with additional boards. I'd love to have one. Obviously, I would have killed for the Explorer or the RTs. Double kill for the 5620. Good they've found homes. KJ

10 years, 1 month

5
4
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CHM

by couryhouse＠aol.com

Anytime you see something you have not seen before... it is worthwhile............ ? ed# Sent from my Verizon, Samsung Galaxy smartphone -------- Original message -------- From: Dave Wade <dave.g4ugm at gmail.com> Date: 8/29/16 12:11 (GMT-07:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: CHM Folks, I am going to be in San Francisco in a few weeks' time, but only for about a day and half. I could spare 2 hours at CHM but is it worth dragging myself up there on a Sunday when there are no working exhibits, and I will only have two hours. Dave.

10 years, 1 month

1
0
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Looking for AT&T WE DSP16A development tools (DOS) and manuals

by jgevaryahu＠gmail.com

Does anyone have a copy of the AT&T/WE DSP16A development tools (assembler, etc) for DOS, and the devkit manual? The actual DSP datasheets and architecture manuals are on bitsavers (oddly, not in the same directory, which was confusing to find): http://bitsavers.trailing-edge.com/pdf/att/dsp/WE_DSP16A_Digital_Signal_Pro… http://bitsavers.trailing-edge.com/pdf/att/dsp/WE_DSP16A_data_sheet_addendu… http://bitsavers.trailing-edge.com/pdf/westernElectric/WE_DSP-16_DSP_Inform… But I'm looking for the actual assembler utility or devkit itself, which are listed (as DSP16A-*) on page 2-3 (pdf page 10) of http://bitsavers.trailing-edge.com/pdf/att/_dataBooks/1995_ATT_Product_Sele… Does anyone have a copy of this, or know someone who has it? -- Jonathan Gevaryahu jgevaryahu at gmail.com jgevaryahu at hotmail.com

10 years, 1 month

1
0
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DEC Pro 350/380 Memory Cards - Interchangeability?

by shadoooo＠gmail.com

Hello Rob, I think I found a link: http://vaxhaven.com/images/a/a7/EK-PC380-PS-003.pdf Andrea

10 years, 1 month

1
0
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cctalk Digest, Vol 26, Issue 29

by anders.k.nelson＠gmail.com

Hey Rob (and anyone else sniffing signals), I've been using a USB logic analyzer from Saleae (https://www.saleae.com/) for years now and the software is really good. Way cheaper than a standalone unit. I'm unsure if the inputs can handle more than 5v but you could throw a divider network in front and try it. Also there's the Digilent Analog Discovery ( https://www.sparkfun.com/products/13929) which does the same stuff but I can't vouch for the software as I've never used it. Inputs can handle +/-20v apparently. =] -- Anders Nelson +1 (517) 775-6129 www.erogear.com > ---------- Forwarded message ---------- > From: Rob Jarratt <robert.jarratt at ntlworld.com> > To: "'Paul Koning'" <paulkoning at comcast.net>, <rob at jarratt.me.uk>, > "'General Discussion: On-Topic and Off-Topic Posts'" < > cctalk at classiccmp.org> > Cc: > Date: Mon, 29 Aug 2016 17:33:56 +0100 > Subject: RE: DEC Pro 350/380 Memory Cards - Interchangeability? > > > > -----Original Message----- > > From: Paul Koning [mailto:paulkoning at comcast.net] > > Sent: 29 August 2016 15:08 > > To: rob at jarratt.me.uk; General Discussion: On-Topic and Off-Topic Posts > > <cctalk at classiccmp.org> > > Subject: Re: DEC Pro 350/380 Memory Cards - Interchangeability? > > > > > > > On Aug 28, 2016, at 5:11 PM, Rob Jarratt <robert.jarratt at ntlworld.com> > > wrote: > > > > > > I have a 350 and 380. Neither work. The 380 is reporting a possible > > > memory error on the LEDs. Will the 350's memory work in a 380 (or vice > > versa)? > > > > The 380 has memory on the motherboard, and a model-specific > > daughtercard for expansion memory. > > > > It seems reasonable that the Pro bus (I/O card) expansion memory should > > work in both models, but I don't have any to try that. > > > > If you have a 380 complaining about memory and it has a Pro bus memory > > card installed, I'd suggest removing that card to see if it's happy with > just the > > stock motherboard memory. > > > > paul > > Just reading your reply again. Are you saying it has enough memory on the > board, without using a daughter board? I did see lots of memory on the main > board, but assumed it was video memory. I did try removing the daughter > board altogether at one point, but it still didn't work. :-( > > I wish I had a logic analyser. > > Regards > > Rob >

10 years, 1 month

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complete displaywriter set in Canada

by sales＠elecplus.com

http://www.ebay.ca/itm/201655050108?rmvSB=true I can't believe no one has bid on this! I hope it goes to someone as the complete set, not just for the keyboard! Cindy Croxton

10 years, 1 month

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ICS Microprocessor Training Lab info

by starbase89＠gmail.com

Greetings! About a month ago, I picked up a "Portable Microprocessor Training Lab" made by Integrated Computer Systems. This thing is cool! It consists of three boards and a power supply built into a suitcase. The main system board is mounted in the bottom of the case on top of the power supply. It has an 8080a, an 8255, four ROMs and 4K of RAM with room for four more. It has a hex keypad plus function buttons and eight LED character displays. There is a bank of about 12 terminal pins for +5, ground, audio in and out, clock and a few that aren't named. I take it the audio ones are for cassette? It has two ribbon cable connectors on the edge. One is for the 50 pin cable that connects to the I/O board. The other one is especially cool (to me, at least.) It's meant to hook up to an S-100 chassis for expansion! The second board is for I/O. It has two 8255s, an 8253 and room for eight more RAM chips (but no sockets.) It has connections for cassette, RS-232 and teletype. Connected directly on top of the the I/O board is the "Experimental Parts Assembly." It has I/O terminals for analog signal, plus minus 12v and plus 5, optical in/out and motor control/supply/drive. It has a holder for three AA batteries, a motor, a speaker and a thermistor. Finally, it came with the cassette "Self-study Microcomputer Interface Training Course: Program Cassette Library." The big thing I'm missing is documentation. It came with nothing and I can't find much, even with The Google. A system description, a schematic and something explaining what's in the ROM would be nice. I've also got to find a book on 8080 assembly language. Like I'd said, all I have tried to work on so far have been a C64, an Apple IIe and a TI-99/4a with only a basic understanding of BASIC :-) Lately though, I've been feeling like I need more of an intellectual challenge. If anyone can help with more inflammation about this system, documentation and/or any suggestions you may have, I'd welcome it. Thanks in advance! Joe Giliberti

10 years, 1 month

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FTGH: More miscellaneous old stuff

by mouse＠Rodents-Montreal.ORG

Okay, I took a bit more time going through my storage. (a) The SparQs are indeed disks; I didn't look closely enough. (b) Some more stuff: - Three disks, which IIRC came out of a MicroVAX-II. Two are Micropolis 1325Ds and the third is a plain 1325. Also present are two sets of cables, each set suitable to connect one drive to a controller card. - One HP 9153A (an HP-IB device; it appears to be a 3.5" floppy drive). - One HP 7958A (an HP-IB device; it appears to be disk). - One HP card, likely the interface card from something like a 7958A. It has an HP-IB connector, an ID switch, two connectors for cables to the drive, and a connector apparently for power. In the etch on the component side is the number 07957-60001; on a sticker, below a barcode, is the text *57CNO14515* (or perhaps *57CN014515*, the font is ambiguous). As before, this stuff is in Ottawa, and is yours for the coming and picking it up. Functionality is unknown, and details may be incorrect because they were hand-copied. /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mouse at rodents-montreal.org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

10 years, 1 month

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Imation Travan-1 tapes

by jwest＠classiccmp.org

I have a partial box of new/unopened Travan TR1 tapes (800/400mb) that I have no use for. There are 7 tapes in the box. I'd rather not ship, so my plan is to take it to VCFMW and put on the free table. But iff anyone desperately needs them, make me an offer. J

10 years, 1 month

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test

by jwest＠classiccmp.org

No response necessary - please ignore. J

10 years, 1 month

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Docs for DEC MPS Intel 8008 Development System scanned

by j＠ckrubin.us

The MPS (MicroProcessor Series) was an attempt by DEC to introduce an Intel 8008-based system as a cost-effective replacement for minicomputers used in process control. The system has its own 14-bit blinkenlights front panel for accessing the 8008. Docs here: https://www.dropbox.com/sh/bezyixp76x2q3i4/AAAdGzzycbTIys1Ftde2BpR5a?dl=0 I'll leave the docs up for a week or so. Jack

10 years, 1 month

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Halt and Catch Fire Tonight

by COURYHOUSE＠aol.com

Halt and Catch Fire Tonight Halt and Catch Fire Tonight premiere of season showing episode 1 and 2 both! thx - Ed#

10 years, 1 month

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Repairing Tape Leader Damage in TK70 Drive

by shadoooo＠gmail.com

Hello Rob, I don't think the leader can be repaired, as the used polymer doesn't react well with glues, simply out will not be robust enough. But if you have some patience and a sharp knife, topi can cut out new leaders from black plastic layers, I used old X ray films of the bones. I did it for all of my drives (only had broken at start), and it worked. For me it was tricky to find the right shape of the original leader, but you have the damaged one... Andrea

10 years, 1 month

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DECnet for Solaris 8?

by nf6x＠nf6x.net

Was there ever DECnet support available for Solaris 8? I rather doubt it, but if it exists then I'd be interested in finding it for my Ultra 60. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

10 years, 1 month

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Repairing Tape Leader Damage in TK70 Drive

by robert.jarratt＠ntlworld.com

I have found a tear in the "arrow head" of the leader of a TK70 drive. I do have a spare somewhere should I need it, but I was wondering if anyone has any clever ways to repair it? Thanks Rob

10 years, 1 month

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more vintage computer stuff

by jnc＠mercury.lcs.mit.edu

> From: Mouse > they require that I subject myself to the Web. > I recognize that few people share this attitude. Well, I sorta understand; the modern 'active content' mania causes me to grind my teeth, too. But the non-active Web has major benefits. E.g. I read this list via the (entirely non-active :-) archive page, so my mailbox doesn't get cluttered up with the dross. Noel

10 years, 1 month

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HP-HIL keyboards with PS/2 connectors

by COURYHOUSE＠aol.com

In a message dated 8/26/2016 8:51:16 A.M. US Mountain Standard Time, phb.hfx at gmail.com writes: On 2016-08-26 12:37 PM, Eric Christopherson wrote: > Years ago I bought two HP 9000/715s. I've barely done anything with them, > so I don't remember for sure if they even came with keyboards. That unit's > keyboards are supposed to be HP-HIL, and I know there was a breakout box to > use a PS/2 *connector* on such a keyboard; but I'm wondering about the > particulars of that. > > I have run across one HP keyboard in my stash, which has a PS/2 connector. > It only partially works on a PC -- certain keys don't register at all. What > I'd like to know is: is it certain that this is just a broken beige box PC > keyboard? The alternative I'm pondering is that it's really an HP-HIL > keyboard with a PS/2 connector that just coincidentally seems to partially > work on a PC. That's unlikely, I know, but I just want confirmation to rule > it out. > It is probably just a broken PC keyboard the communication protocols on PS/2 and HP-HIL are very different. and.... the HP HIL keyboad has a TOTALLY different connector also...

10 years, 1 month

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HP-HIL keyboards with PS/2 connectors

by echristopherson＠gmail.com

Years ago I bought two HP 9000/715s. I've barely done anything with them, so I don't remember for sure if they even came with keyboards. That unit's keyboards are supposed to be HP-HIL, and I know there was a breakout box to use a PS/2 *connector* on such a keyboard; but I'm wondering about the particulars of that. I have run across one HP keyboard in my stash, which has a PS/2 connector. It only partially works on a PC -- certain keys don't register at all. What I'd like to know is: is it certain that this is just a broken beige box PC keyboard? The alternative I'm pondering is that it's really an HP-HIL keyboard with a PS/2 connector that just coincidentally seems to partially work on a PC. That's unlikely, I know, but I just want confirmation to rule it out. -- Eric Christopherson

10 years, 1 month

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Digital Data Cartridge RLo2K DC

by mazzinia＠tin.it

http://www.ebay.de/itm/1von3-NEU-Digital-15-Data-Cartridge-RLo2K-DC-Jahr-19… seems he has 3 new boxed ( I'm not related )

10 years, 1 month

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My first 10BASE5 network segment

by jzatar2＠illinois.edu

>On 26/08/2016 06:26, Warner Losh wrote: >> 10base5 also had rules for minimum bend radius > >True, because bending the cable alters the geometry and introduces >impedance discontinuities, though (to be picky) the allowable bend >radius varies between cable manufacturers because the precise cable >construction dictates the tightest bend that wouldn't upset the >impedance. What I recall from the standard is that cables must support >a bend radius of 254mm /or less/ in order to be flexible enough for >reasonably easy installation. A sort of "maximum minimum bend radius". > >> as well as tap locations to be at the maxima of the reflection point. > >Actually it's to /avoid/ maxima and thereby to ensure things are out of >phase, minimising adverse interference effects. The node positions are >at 2.5m intervals, a distance which is chosen so that taps and >terminators are very unlikely to be exact wavelengths apart and hence >will /not/ be at maxima, so conflicting signals will be out of phase. >IIRC correctly it's deliberately not quite 1/19th of the wavelength. > >For the same reason, cable sections are supposed to be odd multiples of >the half-wavelength of the signal (23.4m, etc). > >> For early gear, failure to >> put it at a vibration node would often result in unreliable behavior, though >> I can't recall if that included collisions or not. > >-- >Pete >Pete Turnbull Yes, the whole reflection thing could get into a bit of a complex discussion involving transmission line theory, but I am an electrical engineer, so here goes: Yes, you need proper termination at either end, or else you get the wrong voltages on the line and cause 'collisions' (well, detect collisions anyway, though there aren't really any until the first reflection comes back from the cable end). And yes, you're supposed to put the nodes 2.5m apart. With only a two node network, and with a really short coax (<1m in my case here), the problem this solves is practically nonexistant. In theory, a properly terminated cable should have virtually no reflections at either end of the cable. In reality, imperfections in the cable, tolerances in your terminators, etc. can cause a small bit of reflection, but it should be mostly negligible. At each node, however, the transceiver places a small load on the coax, and some (small) amount of reflection will occur here. The reason you want the 2.5m spacing is so that you stop any nodes from being a perfect wavelength apart (23.4m minimum) and having their reflections build on each other enough to cause a problem with the signal levels and corrupt data (and trigger a collision). Also, the wavelength of ethernet signalling is 23.4m. This is a full wavelength, not a half as pete said. Ethernet is 10Mbit/second (more accurately, also 10Mbaud), which means normally that the maximum frequency of the raw data signal would actually be 5MHz, but since ethernet uses manchester encoding, there are sequences of bits which can produce a 10MHz signal, as well as sequences of bits which can produce a 5MHz signal. The minimum propagation speed of 802.3 compliant 10BASE5 coax is (IIRC) .78C (C being the speed of light, 3E8 m/s), so taking .78C/10MHz = 23.4m Regards, Joe Zatarski

10 years, 1 month

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My first 10BASE5 network segment

by jzatar2＠illinois.edu

Tuesday night, I got a small 2 node thicknet segment going between my DEC VXT2000 and my laptop. I took a quick demo video, https://youtu.be/A5T2GlAN2N4 The hardware setup is as follows: I have a twisted pair (10BASET) to AUI converter (a Lantronix LTX-C) (not to be confused with a 10BASET MAU) which is connected to (and driving) a Cabletron coax MAU with 10BASE5 vampire tap. This is connected to a small piece of 10BASE5 coax, which is terminated with a 47 ohm resistor pushed into each end. This coax runs over to an identical MAU with vampire tap, and an AUI cable connects it to my DEC VXT2000. Anyway, I hope to demo a larger 10BASE5 network at VCF MW, but I need outside help since I only have two AUI capable devices (the LTX-C and my VXT2000). So if you're going to be at VCF MW, and you've got some gear with AUI on it, bring it along and I can hook you up. I have about 50m of cable I think, and plenty of MAUs, but I'm short on AUI cables with both ends on it, so bring along any you have if you'd like to connect. Regards, Joe Zatarski

10 years, 1 month

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Million-dollar vintage computer

by COURYHOUSE＠aol.com

I can not wait to get back to the back of some of the rooms I have not been in for 20 to 30 years where I would stash away anything that looked like a single board computer... who knows... there may be gold in them thar stacks! #Ed In a message dated 8/25/2016 4:10:31 P.M. Pacific Daylight Time, billdegnan at gmail.com writes: On Thu, Aug 25, 2016 at 6:57 PM, Cameron Kaiser <spectre at floodgap.com> wrote: > > > Over on the Vcfed forum Evan reports: > > > The pre-production Apple 1 sold via CharityBuzz and displayed at VCF > > > West closed today at $815,000. > > > > > > So, which is it? > > > > I would be curious to know the weight of the celebration Apple I, to see what it's dollar per gram ratio is. Help put things in perspective. Bill

10 years, 1 month

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Million-dollar vintage computer

by COURYHOUSE＠aol.com

In a message dated 8/25/2016 4:10:31 P.M. Pacific Daylight Time, billdegnan at gmail.com writes: On Thu, Aug 25, 2016 at 6:57 PM, Cameron Kaiser <spectre at floodgap.com> wrote: > > > Over on the Vcfed forum Evan reports: > > > The pre-production Apple 1 sold via CharityBuzz and displayed at VCF > > > West closed today at $815,000. > > > > > > So, which is it? > > > > I would be curious to know the weight of the celebration Apple I, to see what it's dollar per gram ratio is. Help put things in perspective. Bill

10 years, 1 month

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MicroVAX II Console Garbling Characters

by robert.jarratt＠ntlworld.com

I have a MicroVAX II which has started garbling and losing characters output to the console. It had seemed that re-seating the processor board would fix it, but that no longer seems to be the case. I was just wondering if anyone else has ever come across this failure mode? Regards Rob

10 years, 1 month

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Million-dollar vintage computer

by COURYHOUSE＠aol.com

so, what was the vcf's take? In a message dated 8/25/2016 12:49:29 P.M. US Mountain Standard Time, ian.finder at gmail.com writes: Wow, how extraordinary a price for such a boring (in terms of design if not impact), well-understood, easy-to-replicate computer. You can be sure it wasn't a vintage computer enthusiast as much as a business enthusiast who got it... :) Sorry I'm such a hater, I've just never understood the Apple 1 thing very much. On Thu, Aug 25, 2016 at 12:18 PM, Evan Koblentz <cctalk at snarc.net> wrote: > The pre-production Apple 1 auctioned via CharityBuzz and displayed at VCF > West closed just now for $1,210,000. Blows away the old record of > $900-something. Amazing!!! > -- Ian Finder (206) 395-MIPS ian.finder at gmail.com

10 years, 1 month

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