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

by brad＠bettercomputing.net

Got yet another PET today - a CBM 8032 with the black bezel. In my PET collection I'm trying to get, instead of each model, a representative of each body style - and there seems to be no shortage of that. Of the five I now have, each is different in some way. Anyway, I'm confident the 8032's mainboard is alive - it chirps on startup. But that's all it does. Nothing appears on the screen. I took the screen hood off - the tube lights up, so there's power and action. If I disconnect the data cable from the motherboard, I get a single dot in the center of the screen. I also have a SuperPET here, the only other unit with the larger monitor. So naturally I tried 'swapping' them - ie running the monitor leads from each to the other's motherboard and turning both on. However the SuperPET monitor doesn't come on either when connected to the 8032, and the 8032's monitor still doesn't come on even when connected to the SuperPET. Not sure what this portends - my expertise has been in the older models so far. Anyway, any advice would be appreciated.. I was hoping I'd get something by doing the swap, so I had an inlking as to what was wrong, but it appears that isn't going to happen here. Brad

12 years, 5 months

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DEC-PDP 11/34 (?) for sale in Memphis, TN

by tosteve＠yahoo.com

Carl has a large "Marquette MUSE system" system for sale in Memphis, TN. MUSE=Marquette Universal Storage for Electrocardiography. It's DEC-based, not sure of the specifics. See pics here: http://oldcomputers.net/temp/muse-1.jpg http://oldcomputers.net/temp/muse-2.jpg http://oldcomputers.net/temp/muse-3.jpg Pick-up required. Contact Carl if interested: Carl E. Osborne Jr. - carl at datamed.com ------------------------------------------------------------------ History: Marquette?s forte? was the acquisition and storage of cardiology records, specifically electrocardiographic data (ECG/EKG), using mainframe Digital Equipment Corporation (DEC) PDP-11 computer systems. They were large ECG management systems that stored electrocardiograms on 300MB CDC 9448 hard drives.

12 years, 5 months

4
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Newspaper Article on the RICM

by michael.99.thompson＠gmail.com

There was a nice article on the RICM in today's Providence Journal newspaper. http://www.providencejournal.com/breaking-news/content/20140125-a-view-from… -- Michael Thompson

12 years, 5 months

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Two of my recent posts aren't showing up..

by drlegendre＠gmail.com

Am I doing something wrong? I've written two new topics in the last few days, and neither of them are showing up. However, my replies to existing threads seem to show up more reliably. Is this even visible? TIA for any info.

12 years, 5 months

10
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128K Mac oddness...

by derschjo＠gmail.com

So it being the 30th anniversary of the Mac and all, I thought I'd play with my 128K Macintosh a bit. I've had it running before, but never got it running anything interesting, so I thought I'd start with a few small games... and there, the trouble began. In a nutshell: I have a few 400K boot disks that I wrote years back (and they're still fine), these contain System 2.0 and System 3.2. All well and good -- I can boot and everything's grand (though a bit boring.) Likewise, I can format other 400K disks in either the external drive or the internal drive, and read/write from/to them without problems. UNTIL... I take one of the 400K disks I've formatted on the 128K Mac and attempt to copy some games from my Mac 512Ke to the disk. The 512Ke is happy to read/write the disk (using the same external drive I used with the 128K Mac) and everything's marvelous. But afterwards, when Finder on the 128K Mac attempts to open the disk, it bombs out with an address error ("Sorry, a system error occurred. ID = 02") and I'm forced to reboot. At this point, I've tried: - Using the internal rather than the external drive to read the disk (suspecting some manner of alignment issue with one or more of the drives) - Several different floppies (all DD, not HD, before you ask :)) - Formatting the floppy on the 512K Mac. - Copying files to a system disk, rather than a blank disk and then booting from said system disk - Booting the 512K Mac with various different System versions (3.2, 6.0.3) and doing the copy from there. - Both System 2.0 and System 3.2 All with the same results -- once the 512K Mac has modified the disk, the 128K Mac chokes on it (it will still *boot* from a modified System disk, but is unable to open it in the Finder without crashing.) At this point I'm stumped. I suppose it's possible my 128K Mac has a fault of some sort (a bit difficult to diagnose given my lack of ability to run a diagnostic...) but it seems to work fine otherwise. Is there some incompatibility between the filesystem portions of the toolbox ROMs in the 128K vs. the 512Ke that could cause problems here? My early-Macintosh-System-Fu is rather weak (I haven't used anything prior to System 6.X all that much) so perhaps I'm missing something obvious here... Thanks for any tips... - Josh

12 years, 5 months

2
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128K Mac oddness...

by brad＠bettercomputing.net

Sounds like possibly an alignment issue. ?I went through this with my 400k drive in my Lisa and my Plus. ?The Plus could only occasionally read what the Lisa wrote. ?Then I realized when I had had the Lisa drive apart for servicing I had forgotten all about alignment for the stepper motor. ?As it turned out, I got lucky.. I actually had pictures of it from before disassembly and was able to use the sticker on the motor to make a lucky guess. ?After that, everything was merry. Sent from Samsung Mobile <div>-------- Original message --------</div><div>From: azd30 <azd30 at telus.net> </div><div>Date:01/25/2014 8:16 AM (GMT-08:00) </div><div>To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> </div><div>Subject: Re: 128K Mac oddness... </div><div> </div>Don't know about floppies, but hd's have an interleave issue between some early Mac models. It usually makes them slow though. Try asking this on m68kla.org -- alex ----- Original Message ----- From: Josh Dersch <derschjo at gmail.com> To: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Sent: Sat, 25 Jan 2014 00:00:54 -0700 (MST) Subject: 128K Mac oddness... So it being the 30th anniversary of the Mac and all, I thought I'd play with my 128K Macintosh a bit.? I've had it running beforeI, but never got it running anything interesting, so I thought I'd start with a few small games... and there, the trouble began. In a nutshell:? I have a few 400K boot disks that I wrote years back (and they're still fine), these contain System 2.0 and System 3.2.? All well and good -- I can boot and everything's grand (though a bit boring.) Likewise, I can format other 400K disks in either the external drive or the internal drive, and read/write from/to them without problems. UNTIL... I take one of the 400K disks I've formatted on the 128K Mac and attempt to copy some games from my Mac 512Ke to the disk.? The 512Ke is happy to read/write the disk (using the same external drive I used with the 128K Mac) and everything's marvelous.? But afterwards, when Finder on the 128K Mac attempts to open the disk, it bombs out with an address error ("Sorry, a system error occurred.?? ID = 02") and I'm forced to reboot. At this point, I've tried: - Using the internal rather than the external drive to read the disk (suspecting some manner of alignment issue with one or more of the drives) - Several different floppies (all DD, not HD, before you ask :)) - Formatting the floppy on the 512K Mac. - Copying files to a system disk, rather than a blank disk and then booting from said system disk - Booting the 512K Mac with various different System versions (3.2, 6.0.3) and doing the copy from there. - Both System 2.0 and System 3.2 All with the same results -- once the 512K Mac has modified the disk, the 128K Mac chokes on it (it will still *boot* from a modified System disk, but is unable to open it in the Finder without crashing.) At this point I'm stumped.? I suppose it's possible my 128K Mac has a fault of some sort (a bit difficult to diagnose given my lack of ability to run a diagnostic...) but it seems to work fine otherwise.? Is there some incompatibility between the filesystem portions of the toolbox ROMs in the 128K vs. the 512Ke that could cause problems here? My early-Macintosh-System-Fu is rather weak (I haven't used anything prior to System 6.X all that much) so perhaps I'm missing something obvious here... Thanks for any tips... - Josh

12 years, 5 months

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What to preserve from the pre-IP era

by aek＠bitsavers.org

Just throwing this out to see what other people think. I suspect we're at the tail end of the usage life of devices that don't speak IP. I'm mostly thinking about networking devices 80's > 00's So, what needs to be preserved? How much of this does CHM need to do? Is any other collecting institution already covering this? How much is within scope? We've been having curatorial discussions about this for years inside CHM, and have been doing some directed collecting since before the big exhibition was locked down in 2010, but it is a big topic and there were a lot of evolutionary dead-ends. What got me thinking about this is I've been working with someone who has storage units full of mid-80's IBM SNA stuff and it's taken me months to scan a fraction of it. I know there are huge swaths of telephony and networking that I've never even looked at. It's pretty overwhelming, actually, to get my head around from the software side.

12 years, 5 months

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Using two RL02 drives on OS/8? (cont'd)

by charlesmorris800＠centurytel.net

It's working again! I made a new RL02 pack using vtserver on my other machine (11/23+), which takes a while to transmit 7.8 MB even at 19200 baud, put it in the 8/A drive 0, held my breath, flipped the boot switch... and got the "." prompt on the terminal :) So the problem that started this whole mess was an IDC connector that I had improperly crimped, inside one of the RL02 drives, so that I could run ribbon cable to the RL8A instead of buying the expensive BC80xx cable. Lesson learned. Bought a BC80J-20! That short circuit was somewhere in the write data lines, which apparently then wiped out the OS/8 pack so it wouldn't boot any more. Lastly, my incorrectly seated quad extender card was introducing errors even after fixing the cable problems, and I wasted several hours chasing that... I may invest in a hex-height extender card to avoid this problem in the future! On the other hand, I now have a serial interface on the desktop PC >from which I can download programs direct to the 8/A. The next thing is to learn how to use Philipp Hachtmann's KL8E in FPGA to download through a laptop USB port at high speed. It looks like I can just change the few IOT instructions of the RIM and BIN loaders to match the card's switch settings. Trying to get Windows to put binary files out a USB port will be more fun, I'm sure. Meanwhile, back to the original problem! My build of OS/8 does not recognize that there are two RL02 drives in the system... which is how I think this thread got started in the first place quite some time ago :)

12 years, 5 months

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Fwd: [GreenKeys] Bletchley Park

by captainkirk359＠gmail.com

Somewhat off-topic, but this was brought up in the GreenKeys mailing list. The new CEO of the Bletchley Park Trust is sacking some of the circa 80 year old volunteers who had been working for Bletchley Park and the National Museum of Computing; apparently just for showing guests the NMOC and Colossus. In case the BBC link doesn't work, here's a link to the reposted version on YouTube: http://www.youtube.com/watch?v=d5n9eVVtKeA I've attached one of the more interesting and informative replies after the forwarded message. Regards, Christian ---------- Forwarded message ---------- From: Craig Sawyers <c.sawyers at tech-enterprise.com> Date: 24 January 2014 18:55 Subject: [GreenKeys] Bletchley Park To: greenkeys at mailman.qth.net This has just been aired on BBC UK. Bletchley Park's new boss Ian Standen is sacking the 80-odd year old volunteers that have been working there for decades. http://www.bbc.co.uk/news/uk-25886961 Craig ______________________________________________________________ GreenKeys mailing list Home: http://mailman.qth.net/mailman/listinfo/greenkeys Help: http://mailman.qth.net/mmfaq.htm Post: mailto:GreenKeys at mailman.qth.net 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/ 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html On 25 January 2014 04:57, Craig Sawyers <c.sawyers at tech-enterprise.com> wrote: > All the details are in the video segment - but I suspect that might not be > possible to get outside the UK. Basically it is one guy in tears because > after taking visitors around Colossus (which he was not allowed to do; see > below) he was called to Standen's office and dismissed. It showed another > guy who had been given his marching orders (remember these guys are unpaid > volunteers) clearing out the display cabinet of his own personal Churchill > memorabilia into cardboard boxes. Then there was an interview with Standen, > in which he said that to enhance the visitor experience the site had to move > with the times, and those who would not fall in line had to go. > > This is all down to a major league dispute between the Bletchley Park Trust, > who own the site, and the National Museum of Computing where Colossus and > Tunny and all the related equipment and galleries are. Basically the > relationship used to be pretty positive - the NMOC paid a rent, the ticket > price was split between the Trust and the NMOC and everything worked. Then > Standen, and ex-military guy, took over as the Trust's CEO and all hell > broke loose. The Trust now claim that the NMOC owe them ?200k in historic > debt; they claim part ownership of Colossus; they refuse to collect money on > the gate for NMOC so you have to pay extra to see Colossus, and the whole of > the NMOC is out of bounds to tour guides - I believe they are even > instructed not to mention its existence. > > The only mention of the NMOC on the Bletchley website is buried here > http://www.bletchleypark.org.uk/content/visit/whattosee/other.rhtm . What > it does not mention is that you cannot visit the site just to see Colossus > etc - you have to pay the site entry fee at the gate, and then as a result > of Byzantine politics pay extra to see everything to do with Colossus. > > The knock-on has had an effect on the Lorenz SZ42, which I restored to full > functionality around ten years ago. During a visit to Paderborn in Germany > five years ago for a Cipher Challenge, the Germans fired it up before I > arrived and blew up the mains transformer, which was kind of ironic. On > return I had that re-rewound. Then Tony Sale died, and shortly afterward > Standen took over as CEO. The problem is that formal ownership of the SZ42 > is still GCHQ, and custodianship vests in the CEO. But the location of the > machine is at NMOC. The continuing blood on the walls dispute essentially > locks me out of repairing the only functional SZ42 on the planet. > > It is a total mess, alas > > Craig > > > > ______________________________________________________________ > GreenKeys mailing list > Home: http://mailman.qth.net/mailman/listinfo/greenkeys > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:GreenKeys at mailman.qth.net > > 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/ > 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html > Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- Christian M. Gauger-Cosgrove STCKON08DS0 Contact information available upon request.

12 years, 5 months

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DEC TU58 Baud Rate

by nf6x＠nf6x.net

The manuals for the TU58 DECtape II tape drive controller indicate that the transmit and receive baud rates can be set independently. Have any of y'all ever heard of an application that uses different transmit vs. receive baud rates with a TU58 drive, or is this independent baud rate capability just a coincidental feature that arose from the way the controller's UART was implemented? I'm thinking about a little embedded TU58 emulator project, and I'm wondering how important it is to support the independent baud rate feature. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

12 years, 5 months

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Prime?

by michael.99.thompson＠gmail.com

> > From: Christian Kennedy <chris at mainecoon.com> > Date: Sat, 25 Jan 2014 21:51:13 -0800 > Subject: Re: Prime? > > On 24 Jan 2014, at 10:11 PM, Jonathan Katz <jon at jonworld.com> wrote: > > > On Fri, Jan 24, 2014 at 11:52 PM, Dennis Boone <drb at msu.edu> wrote: > >>> http://en.wikipedia.org/wiki/Superminicomputer > >>> http://en.wikipedia.org/wiki/Minisupercomputer > >> > >> Oi! Prime does not Cray! > > > > Does anyone even have any running Prime gear anymore? > > Yup. Not that I fire the thing up terribly often. > > -- > Christian Kennedy Ph.D. > chris at mainecoon.com AF6AP | DB00000692 | PG00029419 > http://www.mainecoon.com PGP KeyID 108DAB97 > PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97 > "Mr. McKittrick, after careful consideration..." > The RICM had a Prime 2850 http://www.ricomputermuseum.org/Home/equipment/prime-computer-2850 and a Prime 9950 http://www.ricomputermuseum.org/Home/equipment/prime-computer-se50m Sometime you should drive south and do a survey of the equipment. -- Michael Thompson

12 years, 5 months

1
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Exidy Sorcerer

by terry＠webweavers.co.nz

This might be a blast from the past for some of you. Another video remake >from my collection. http://youtu.be/bEnsYJOjh2k Terry (Tez)

12 years, 5 months

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Using two RL02 drives on OS/8? (cont'd)

by charlesmorris800＠centurytel.net

>>On Sat, 21 Dec 2013 22:36:42 -0600, you wrote: >> >>>The last time I had a chance to tinker with my malfunctioning PDP-8/A >>>with two RL02's was way back in Feb. 2013... here is the most relevant >>>tail of the old thread: >>> >>>> The connections from the drive select outputs on the RL8A checked >>>> perfectly to the line receiver inputs on the RL logic board. While I >>>> appreciate Rick's taking the time to make me a selectable version of >>>> the RL02 oscillating seek.... he included a bug at no charge too ;) >>>> >>>> Specifically, the constant at 0230 (0100) selects the appropriate >>>> drive and resets it all right (0101 in AC). But - later on down the >>>> program, the SEEK (03) command is issued with another RLCB... however, >>>> the AC is forced to 0003 by the microprogrammed 7325. >>>> >>>> (As is probably apparent by now, the AC must have 0103 in it to select >>>> Drive 1). >>>> >>>> I edited the program to use a TAD 0231 and put the constant at 0231. >>>> So instead of the CLA CLL CML IAC RAL (load AC with 03 the hard way, >>>> an old-time DEC programmer's way to save one word when memory was a >>>> precious commodity) :) the AC now loads with 0103 and lo and behold, >>>> Drive 1 seeks merrily away! Restore the two constants to Drive 0 and >>>> THAT drive seeks. OK. >>>> >>>> However, all was not lost... during the couple of hours of chasing my >>>> tail wondering where the LSB of the drive select was going, I found >>>> that I had inserted the header into the RL logic board crookedly and >>>> bent two pins, one in the wrong hole and one shoved aside! :( >>>> >>>> Not only that, the line driver chip which provides the drive select >>>> signals had come from the factory with NO solder at all on its Vcc pin >>>> 16! >>>> =:^O >>>> Fixed that too. >>>> >>>> I think the OS/8 packs have been wiped out by now... various FAULT >>>> lights coming on, especially on the 2nd drive in the chain... going to >>>> build another system pack with VTserver which takes a good half-hour >>>> or more at 19200 baud. Hope the servo tracks are ok, otherwise I'll >>>> need to buy a couple of good packs! >>>OK. Last week I finally fired up the 8/A again. The problems had >>>actually gotten worse during the prolonged rest... I couldn't get >>>either drive to work this time (fault lights on both, as soon as the >>>Ready lights come on, even before any accesses). After much hair- >>>pulling and 'scope troubleshooting, I finally found (inside drive 1) >>>that I had improperly crimped one of the IDC connectors to the ribbon >>>cable, inside the bottom drive in the rack, where it was making a >>>variable resistance short between the two sector pulse drive lines! >>> >>>So, having fixed that, I verified that Rick's oscillating seek program >>>works on either drive without faulting. Enter the constants for drive >>>0, drive 0 seeks no matter whether the first or second drive in the >>>chain as long as the unit 0 plug is inserted. Same for drive 1. Both >>>are not being selected simultaneously. >>> >>>I also entered a short program to get the two status words, and that >>>reads the status of either drive correctly (idle, spin up, locked on >>>track 0, spin down, write protect button pushed). >>> >>>Now, the original problem is still there, that OS/8 won't boot and the >>>RL02 faults (with either the original OS/8 pack that may have been >>>wiped, AND the remade one). Doesn't matter which drive is used as >>>Drive 0, or whether the new or the original OS/8 pack... Hit the BOOT >>>switch and Drive 0 audibly moves its heads, the fault light flashes >>>briefly, then it goes back to being ready (and of course OS/8 is not >>>running). >>> >>>The interesting part is if both drives are loaded, then the fault >>>light on *both* drives flashes, then they both go ready again! >>>I haven't recently tried disconnecting the second drive cable and just >>>running with one drive, but that wasn't working before, either. >>> >>>I am not going to be able to sort this out (unless I use my ancient >>>Tek 7D01 logic analyzer triggered by the fault signal) without a >>>diagnostic pack... >>> >>>Does anyone have the diagnostic program set for PDP-8 and can put them >>>on an RL02 disc pack? I could either mail a disc to you, or I could >>>pay for one if a spare is available. >>>thanks for any help! >>>-Charles >> >>OK. Got a serial link to my PC going, and successfully downloaded various RL02 diagnostics from the "diagpack2.rk05" image. The seek test works, as does pack verify. However, either drive 0 or 1 flags an error on the read/write test promptly.: >> >>WD1 0235 >>WD2 0000 (the two status words from the RL02, and they are normal); >>ER 2001 (if I'm interpreting this right, this is the Error Register which is showing only an OPI - Operation Incomplete error); >>CB 0115 (<----------- what is this? ----------) >>CA 0000 (cylinder address) >>SA 0100 (sector address) >> >>As I posted on another thread, having instructions for these AJxxxx routines would really help, although I can figure much of it out from the RL02 manual, especially if I just use the defaults when prompted. >> >>What I think this is telling me is that the problem is somewhere on the controller card, as neither drive will write but both can read without errors. >> >>There is a "Diskless RL8A test" (AJRLAC) but I can't figure out how to use it. Anyone got instructions for this one? thanks :) > >Read over the RL8A Technical Manual, specifically the write section. > >CB = Command Register B, 0115 is Drive 1, memory field 1, Write >command. >CA = Command Register A (which also happens in this context to be >Cylinder Address :) Head 0, Direction Forward, Cylinder 0). > >So - the proper write command is being issued on the first >cylinder/sector address of the platter, but OPI (operation incomplete >in 200 ms) is the only flag returned. That tells me the fault is >likely somewhere in the write logic as it appears that nothing is >being written at all, not just incorrect data or at the wrong time >which would set other error flags. Will report more when I get another >chance to work on it! I think I found the problem (aside from the defective cable previously described), and "Y'all ain't gonna believe this"... I toggled in a couple of simple programs to write each register (Command A, Command B, Word Count, Sector Address) and read them back. On a few occasions I noticed the SA was not reading the same as written. And... the returned bit pattern changed when I moved the RL8A card! As it turns out, my quad extender card was not lined up perfectly in the chassis (which is hex-height, and so is the RL8A, but it only uses four of its six finger sets). I put the RL8A directly in the slot and re-ran the diskless controller test and it worked flawlessly. Also the read/write tests now work without all those errors too. I can't believe I spent hours and hours chasing this :P However, my OS/8 pack still won't boot. Interestingly, the same boot behavior is seen with the scratch packs that I used on the read/write tests (flip the boot switch, the heads move, the fault light flashes, drive goes back to being ready). So it looks like the OS has been wiped out and it's time to make another pack on the 11/23+ with vtserver. We'll see how that goes soon...

12 years, 5 months

1
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A nice article

by c.murray.mccullough＠gmail.com

Just what a ?carefully researched article? means I?m not sure; an historian does exactly that or should. But if we historians are not willing to stand-by our research & printed(electronic, oral & otherwise) works then why do it in the first place! If I say this is the evidence I have and did due diligence then I stand by what I have done. If it is ?corrected? in the future then so be it. But let us not avoid writing history ?at all costs? just because Will considers them ?the most dangerous words in historic research?. I?d rather have my opinions out there then not! But so has he. A conundrum indeed. This applies to the 30th ann. of the MacIntosh. We know its history but not the underlying reason it was created as S. Jobs is no longer here. I can surmise what was his intention but that's all. Does this negate what I do? Hardly! Murray :-)

12 years, 5 months

4
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Quick way to load bin loader into memory from OS8

by rickb＠bensene.com

BOOT /PT Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com -----Original Message----- From: Marc Howard [cramcram at gmail.com] Received: Saturday, 25 Jan 2014, 1:49PM To: General Discussion: On-Topic Posts Only [cctech at classiccmp.org] Subject: Quick way to load bin loader into memory from OS8 I seem to recall seeing that the BIN (and probably RIM) loaders can be loaded with a single command from OS8. What's the magic command? Thanks, Marc

12 years, 5 months

2
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Quick way to load bin loader into memory from OS8

by cramcram＠gmail.com

I seem to recall seeing that the BIN (and probably RIM) loaders can be loaded with a single command from OS8. What's the magic command? Thanks, Marc

12 years, 5 months

1
0
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ATD (MG 201) ISA card?

by jules.richardson99＠gmail.com

Picked up this critter yesterday, it's a short (~7") 8-bit ISA card made by ATD (which the FCC sticker tells me is Advanced Transducer Devices) with a female DB-25 and female DE9 connector on the rear edge. There's a 40-pin IC on it labeled 'printer', as well as a 24-pin IC labeled 'mono', and a 6845 CRT controller. Fair enough, and initially I'm thinking that it's just a reworked clone of an IBM MDA card - but also present on the board are two 48-pin ICs, which suggests there might be more to it than that; sure, I remember there being a lot of TTL logic on the IBM MDA board, but I'm surprised it needs two 48-pin ICs to condense it all. Unfortunately the pair of 48-pin chips are custom parts (as are the 'mono' and 'printer' ICs) - one's branded ATD1/BLOWD/802D8643LD and the other ATD2/WIND/8038637LDC. Does anyone remember this board and can tell me if it is something more than just MDA/parallel? There's no separate ROM chip, but I suppose it's entirely possible that it has some firmware embedded in one of the large ICs. cheers Jules

12 years, 5 months

4
5
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RK05

by wdonzelli＠gmail.com

It looks like I might have an extra RK05j available, but first, a question: Can a reasonable PDP-11/45 system be made using a single RK05? The system I have has been hacked up and modified so much from its gas chromatograph days that I feel like I can justify fooling around with it any way I like. It has no disk, but I am pretty sure I can slide an RK05 in the rack (it is a two rack system, with the second rack being a TU10). I do not think a second RK05 will fit, so that one will likely be available. Please ask off list. -- Will, 10512. Yes, it is a zip code.

12 years, 5 months

7
6
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Who built the first minicomputers?

by steve＠tronola.com

I appreciate all the hearty discussion in response to the article: http://www.tronola.com/html/who_built_the_first_minicomput.html There are some points that I would like to respond to: >It perpetuates the myth that there was such a thing as a "minicomputer" before the late 60's. There have been several threads now on the origin of the term... --- In no way did I mean to suggest that the TERM minicomputer was used contemporaneously with the machines which I found to be classifiable as minis. Rather, I am trying to clarify what that term has come to mean. From there, I proceeded to look for the first machines that fit that definition. Now, I certainly don't claim that the definition I propose is the very best one and would appreciate helpful comments on improving it. >There have been numerous attempts to redefine the boundaries based on [various criteria] ALL such redefinitions, that ignore the fundamental nature of being MARKETING terminology... ---Marketing people might have originated the term minicomputer but like all words, it is defined by the people who use it. We do in fact use it and others seem to know what we mean. My task was to clarify what people do mean by it. >Likewise, the use of the word "first" is fraught with danger without completely ARBITRARY further stipulations...But, the boundaries are undefined, or rather, everybody has a unique definition of the boundaries of their own. --- I totally agree that "first" would be meaningless without first defining what you are saying is first. Rather than using arbitrary criteria with which to define mini, I tried to find ones which could be justified and that many could agree upon. For each factor, I looked for good common-sense reasons that it needed to be so and stated those. If I am off base on some, I would appreciate feedback on what you think would be better. >Are we talking about working prototype? announcement? orders taken? first delivery? full retail availability? --- It was stated that first production ship date would determine priority. Please see the article for the justifications for that. I think you will find that this is what makes sense. >Should limited production machines be excluded? --- The requirement was simply that it must have been manufactured in quantity. Fortunately, the exact quantities shipped did not become an issue for minis. The lowest quantity machine was probably the LINC, of which some 50 or so were made. Thanks, Steve L. http://www.tronola.com/

12 years, 5 months

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Looking for a Chicago Lock key C2132 for a TI980B

by ethan.dicks＠gmail.com

Hi, All, Much like the famous XX2247 key for DEC gear, apparently the default key for a number of TI machines, including the TI980B, is a Chicago Lock cut to code C2132 (the code is typically stamped on the key). Does anyone have such a thing and can spare one? I have a TI980B and no key. Thanks for looking, -ethan

12 years, 5 months

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First Minicomputer

by elson＠pico-systems.com

The Bendix G-15 was conspicuously left out, although I think it meets all the requirements. it was the size of a refrigerator, weighed 800 Lbs, had several K of drum memory (not "RAM") had an IBM executive typewriter for I/O, and ran a version of Algol. Jon

12 years, 5 months

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Who built the first minicomputers?

by rickb＠bensene.com

What about the Bendix G15? Introduced in 1953. Definitely fits the criteria outlined in the article. Not that I agree with the article..like many others here feel, the term `first` in a historical context is too fraught with issues of definition. Rick Bensene -----Original Message----- From: Chuck Guzis [cclist at sydex.com] Received: Friday, 24 Jan 2014, 9:17AM To: General at bensene.com [General at bensene.com]; Discussion at bensene.com:On-Topic and Off-Topic Posts [cctalk at classiccmp.org] Subject: Re: Who built the first minicomputers? I'm surprised that the Packard-Bell PB250 wasn't considered. It could run from a standard US lighting circuit. Circa (IIRC) 1959. Not a drum machine, but used a recirculating magnetostrictive memory. It also seems that there may have been a few military computers that would satisfy your criteria. As Will has stated "first" is a very dangerous word and "minicomputer" is, in fact, a term of art. Like pornography, it's what it is because someone says so. --Chuck

12 years, 5 months

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1/10th speed PDP-11/40 simulator on ATmega2560

by ethan.dicks＠gmail.com

Found via Hack-a-Day just now... https://github.com/davecheney/avr11 It apparently can handle booting v6 UNIX on an emulated RK05 at about 10% the speed of real hardware. It requires a custom sheild to add a couple of 8-pin SPI RAM chips. Directions for that are said to be coming soon. -ethan

12 years, 5 months

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Booting my PDP-8A, so close yet..

by cramcram＠gmail.com

I've got a PDP-8A with RK05's and a TC08/TU56. I've verified the serial port is okay (via checkser), loaded focal with the rim loader and run both read and write tests on a RK05 pack. I've done a restrk05 with both diagpack2.rk05<http://www.pdp8online.com/pdp8cgi/os8_html?act=dir;fn=images/os8/diagpack2.…> and haygood-osv3r.rk05<http://www.pdp8online.com/pdp8cgi/os8_html?act=dir;fn=images/os8/haygood%2D…>. It seems to progress ok, counting up to the last cylinder and leaving the AC equal to 0 when done. However when I execute the two word bootstrap for the RK8E I hear the drive seek once and then stop at location 0031. I've also tried a restore with the TC08 but it never even gets to the point that the drive gets selected (the SR is 0 on entry). However if I punch in the TC08 bootstrap unit 0 does a rewind, then goes forward (with lots of das blinken lights), goes past quite a few blocks and then halts (this is on a tape that claims to have OS8 on it). The RK05 is most frustrating since it passes the rw tests (9 passes) but doesn't boot. I guess I'm going to be loading in some maindecs unless someone out there has any other ideas. Thanks, Marc

12 years, 5 months

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Alcon surgical laser S-100 board

by alexandre.tabajara＠gmail.com

Dear sirs, I'm looking for education, since I know nothing about S-100 I got some boards from an Alcon surgical laser, and they SEEMS TO BE clearly S-100-compatible. The CPU board uses an 8085, with ROM mapped from $1000 on. BIN avaiable upon request. Since I'm a complete n00b about S-100 systems, how can I positively identify this board as a S-100 compatible board, and what are the minimal connections I can use for, at least, make it tick? (now I understand the need to learn more about CPU emulators and how to integrate "blocks" of code to emulate an unknown computer easily) Thanks Alexandre Souza

12 years, 5 months

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Who built the first minicomputers?

by rickb＠bensene.com

Correction...the G15 was introduced in 1956. Rick Bensene -----Original Message----- From: Rick Bensene [rickb at bensene.com] Received: Friday, 24 Jan 2014, 10:18AM To: cctalk at classiccmp.org [cctalk at classiccmp.org] Subject: RE: Who built the first minicomputers? What about the Bendix G15? Introduced in 1953. Definitely fits the criteria outlined in the article. Not that I agree with the article..like many others here feel, the term `first` in a historical context is too fraught with issues of definition. Rick Bensene -----Original Message----- From: Chuck Guzis [cclist at sydex.com] Received: Friday, 24 Jan 2014, 9:17AM To: General at bensene.com [General at bensene.com]; Discussion at bensene.com:On-Topic and Off-Topic Posts [cctalk at classiccmp.org] Subject: Re: Who built the first minicomputers? I'm surprised that the Packard-Bell PB250 wasn't considered. It could run from a standard US lighting circuit. Circa (IIRC) 1959. Not a drum machine, but used a recirculating magnetostrictive memory. It also seems that there may have been a few military computers that would satisfy your criteria. As Will has stated "first" is a very dangerous word and "minicomputer" is, in fact, a term of art. Like pornography, it's what it is because someone says so. --Chuck

12 years, 5 months

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IBM 3179

by aek＠bitsavers.org

http://www.ebay.com/itm/380684482851 the seller is 'special' he had useless pictures, updated them at my request, then realized that there was a market for just the keyboards, pulled them off and now is selling them separately for $50 I'm sorry I even asked Anyway, if someone else is looking for one for $150, here's your chance.

12 years, 5 months

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NS405, NS455 (was Re: NEC uPD7201C Datasheet, Pinout?)

by spacewar＠gmail.com

On Jan 20, 2014 2:07 PM, "Holm Tiffe" <holm at freibergnet.de> wrote: > Next interesting thing are 10 pcs. of NS405-B18N, a sticker says that that > are display processors, someone knows where tehy where used in? To a first approximation, nowhere. Ciarcia used it in the TERM-MITE construction article in the Feb. 1984 issue of BYTE, reprinted in _Ciarcia's Circuit Cellar, Vol. 7_. There's also an NS455 variant, and alternate part numbers (e.g. NS32045). They have an enchanced 8048 core and a text-oriented CRT controller.

12 years, 5 months

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Generic monitor ROM...

by geneb＠deltasoft.com

Does anyone here know where I could find a "generic" monitor ROM that could be tweaked for the target system? I'm looking for something that would fit in a 4K EPROM. tnx. g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

12 years, 5 months

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Vintage-computer.com

by barythrin＠gmail.com

The forums have a maintenance announcement up last time i checked an hour or so ago so hopefully some planned maintenance is going on. It didnt specify any eta but they're (or Erik) usually pretty quick to get things up.

12 years, 5 months

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MAINDEC diagnostic program instructions?

by charlesmorris800＠centurytel.net

I still can't boot OS/8 on my 8/A with RL02's. I now have the ability to download files from my PC to the console port (which goes a heck of a lot faster at 9600 baud than at 110!). For example, FOCAL-69 downloads in about 20 seconds. It works too, so I don't think the problem is with the 8/A itself. Anyhow, I have all the RL02 diagnostics from the diagpack2.rk05 image. So far, AJRLHA.BN (that's the "SEEK/FCTN" test) works without errors. I'm about to try the AJRLIA (read/write test) which should require losing the contents of a pack... What I'm looking for is a library of all the instructions for the diagnostic routines on that pack, since they are not all just "start at 0200 and follow the prompts". Is there such a thing, or do I have to try and find each one separately? At least just the AJxxxx diagnostics? thanks for any hints. -Charles

12 years, 5 months

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Syquest Drives - 200 vs 88

by silent700＠gmail.com

I was handed a pile of 88mb Syquest disks - ostenisibly Mac formatted - a while back and I decided to have a go at them tonight. The only Syquest drives I found in my pile were the original 44mb and the later 200mb (model 5200C.) Everything I can find on this drive (which isn't much) declares that is is backward *read* compatible with 44mb and 88mb cartridges. That's fine, reading is all I want to do. My test platform is Win7 x64 (boo hoo I know...but it's convenient and there is a working 'dd' I've used many times for hard disk imaging.) I first tested the drive with a 200mb pack I already had. It mounted the cart, presented it to the OS and allowed me to dd the cart to an image file which mounted in a Mac emulator. I declared the drive good. Trying 88mb carts results in consistent errors. The drive sounds like it's mounting it, clicks a bit, spins up and down and finally settled on a 5-green, 5-amber blink code. According to this chart: http://www.kassj.com/articles/sqtable.html that means "incompatible cartridge." My carts are all Syquest-branded. Beyond that (and the possible Mac formatting,) I know nothing else about them. The real rub is this - once it displays that error code, the drive _disappears_ from the SCSI chain. Neither the OS tools nor a SCSI explorer utility find it. Insert the 200mb cart and it's back again; not even a power-cycle needed. The drive does appear with a SCSI ID before inserting a cart; a mounted cart is not necessary for it to present itself. So, theories: - This drive isn't 88mb compatible after all - *All* my carts are bad - The carts were degaussed and thereby lost some sort of low-level formatting or other ID method that the drive uses to recognize them - There's some sort of mode jumper or switch (hardware/software) to kick it into 88mb compatibility mode, if such a thing exists. I have no manual for these drives - I need some sort of driver to enable reading 88mb carts; I don't think this is the case - most OSes should simply see them as removable media; it's the drive's job to sort out cart compatibility Any experience/insight/advice is appreciated here. Also offers of a 88mb Syquest drive :) -- jht

12 years, 5 months

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Using two RL02 drives on OS/8? (cont'd)

by charlesmorris800＠centurytel.net

The last time I had a chance to tinker with my malfunctioning PDP-8/A with two RL02's was way back in Feb. 2013... here is the most relevant tail of the old thread: > The connections from the drive select outputs on the RL8A checked > perfectly to the line receiver inputs on the RL logic board. While I > appreciate Rick's taking the time to make me a selectable version of > the RL02 oscillating seek.... he included a bug at no charge too ;) > > Specifically, the constant at 0230 (0100) selects the appropriate > drive and resets it all right (0101 in AC). But - later on down the > program, the SEEK (03) command is issued with another RLCB... however, > the AC is forced to 0003 by the microprogrammed 7325. > > (As is probably apparent by now, the AC must have 0103 in it to select > Drive 1). > > I edited the program to use a TAD 0231 and put the constant at 0231. > So instead of the CLA CLL CML IAC RAL (load AC with 03 the hard way, > an old-time DEC programmer's way to save one word when memory was a > precious commodity) :) the AC now loads with 0103 and lo and behold, > Drive 1 seeks merrily away! Restore the two constants to Drive 0 and > THAT drive seeks. OK. > > However, all was not lost... during the couple of hours of chasing my > tail wondering where the LSB of the drive select was going, I found > that I had inserted the header into the RL logic board crookedly and > bent two pins, one in the wrong hole and one shoved aside! :( > > Not only that, the line driver chip which provides the drive select > signals had come from the factory with NO solder at all on its Vcc pin > 16! > =:^O > Fixed that too. > > I think the OS/8 packs have been wiped out by now... various FAULT > lights coming on, especially on the 2nd drive in the chain... going to > build another system pack with VTserver which takes a good half-hour > or more at 19200 baud. Hope the servo tracks are ok, otherwise I'll > need to buy a couple of good packs! OK. Last week I finally fired up the 8/A again. The problems had actually gotten worse during the prolonged rest... I couldn't get either drive to work this time (fault lights on both, as soon as the Ready lights come on, even before any accesses). After much hair- pulling and 'scope troubleshooting, I finally found (inside drive 1) that I had improperly crimped one of the IDC connectors to the ribbon cable, inside the bottom drive in the rack, where it was making a variable resistance short between the two sector pulse drive lines! So, having fixed that, I verified that Rick's oscillating seek program works on either drive without faulting. Enter the constants for drive 0, drive 0 seeks no matter whether the first or second drive in the chain as long as the unit 0 plug is inserted. Same for drive 1. Both are not being selected simultaneously. I also entered a short program to get the two status words, and that reads the status of either drive correctly (idle, spin up, locked on track 0, spin down, write protect button pushed). Now, the original problem is still there, that OS/8 won't boot and the RL02 faults (with either the original OS/8 pack that may have been wiped, AND the remade one). Doesn't matter which drive is used as Drive 0, or whether the new or the original OS/8 pack... Hit the BOOT switch and Drive 0 audibly moves its heads, the fault light flashes briefly, then it goes back to being ready (and of course OS/8 is not running). The interesting part is if both drives are loaded, then the fault light on *both* drives flashes, then they both go ready again! I haven't recently tried disconnecting the second drive cable and just running with one drive, but that wasn't working before, either. I am not going to be able to sort this out (unless I use my ancient Tek 7D01 logic analyzer triggered by the fault signal) without a diagnostic pack... Does anyone have the diagnostic program set for PDP-8 and can put them on an RL02 disc pack? I could either mail a disc to you, or I could pay for one if a spare is available. thanks for any help! -Charles

12 years, 5 months

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MicroVAX II in BA23

by BHuntsman＠mail2.cu-portland.edu

Hi there! Time to do some DEC collecting again... Just wondering, does anyone have a MicroVAX II in BA23 pedestal chassis they'd be willing to sell? Thanks in advance!! -Ben

12 years, 5 months

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Happy 30 Macintosh

by christian_liendo＠yahoo.com

CNN's page on Mac's 30 http://www.cnn.com/2014/01/22/tech/gallery/evolution-of-mac/index.html?hpt=…

12 years, 5 months

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SyQuest Drives

by bpettitx＠comcast.net

To Tom Gardner, I'm working this week with Jason Honigberg. Did you know him at SyQuest? Is there anything specific I can ask him that might help you? Billy Pettit bpettitx at comcast.net

12 years, 5 months

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TU58-DA on eBay

by nf6x＠nf6x.net

So, does anybody want to admit to winning the TU58-DA (desktop dual TU58 drive with controller) on eBay this afternoon? I sadly didn't win it, but I determined how much the winner had to pay for it. ;) P.S.: I'm on the lookout for a TU58-CA, the rack-mountable version. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

12 years, 5 months

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eBay PDP-12

by glen.slick＠gmail.com

Here's something you don't see on eBay: Vintage PDP-12 computer was completely operational MUST PICK UP http://www.ebay.com/itm/161199469414 Long Island, NY How many of these exist? How much will this one go for? -Glen

12 years, 5 months

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Looking for SMS OMTI 7400 controller

by andy.piercy＠gmail.com

Folks, I'm looking for a replacement SCSI to ESDI controller made by SMS for a Masscomp I,m trying to get running. Its an SMS OMTI 7400 controller which supports ESDI/ST506 hard drives, QIC 02 cart tape, and floppy drive. The current controller has failed in the floppy drive circuitry. However I'm in the process of trying to source and replace the possible faulty components but I was wondering if anyone had a spare they would be willing to part with - for cash of cause. Also looking for an ESDI hard drive, my Micropolis 1355 has failed but not the usual sticky bumper issue.. Many thanks Andy

12 years, 5 months

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DEC TK50 and controller available

by elson＠pico-systems.com

I have a TK50 and M7546 (Q-bus) controller available. The drive is pretty dirty, you will HAVE to open it up and clean it before use, but it looks like it should work after that. I don't have the cable, it was from one of the boxes that had an interconnect board in the middle between all the controllers and drives. I'm in the St. Louis, MO area, and really only want to get the packing and shipping covered. Jon

12 years, 5 months

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cctech Digest, Vol 125, Issue 41

by michael.99.thompson＠gmail.com

> From: Pontus Pihlgren <pontus at Update.UU.SE> > To: "General Discussion: On-Topic and Off-Topic Posts" < > cctalk at classiccmp.org> > Cc: > Date: Tue, 21 Jan 2014 09:42:11 +0100 > Subject: Re: eBay PDP-12 > On Thu, Jan 16, 2014 at 02:51:54PM +0000, Adam Sampson wrote: > > Pontus Pihlgren <pontus at Update.UU.SE> writes: > > > > >> How many of these exist? > > > I can't know for sure, but here is a lower bound: 11 > > > > Robert Krten has a longer list of potentially-surviving PDP-12s: > > http://dustyoldcomputers.com/pdp12/location.html > > All the ones I listed are in Krten's list. > > /P > The RICM is negotiating with a private collector to get a PDP-12 that is not on Robert's list. Michael Thompson

12 years, 5 months

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VAXBrick value?

by BHuntsman＠mail2.cu-portland.edu

Anyone here have a VAXBrick, or know what a fair price on one might be? I've got a drop on one but the guy wants almost $2,000... I know they're rare and all, but that seems a bit on the ridiculous side to me... I could be totally wrong though. Any input is appreciated. -Ben

12 years, 5 months

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Any interest in DEC Storage Expansion Units?

by lproven＠gmail.com

I suddenly have 5 of the things! I think that 2 of them are empty, but 3 have hard disks in: 1 * RZ52 (5.25" FH) 2 * RZ25 (3.5" HH) - I think this is a rebadged Conner CP3100, a 105MB drive I don't yet know if they work. Of any interest to anyone, do you folk think? -- 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 Tel: +44 20-8685-0498 ? Cell: +44 7939-087884

12 years, 5 months

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cctech Digest, Vol 125, Issue 41

by ajp166＠verizon.net

On 01/21/2014 11:03 PM, cctech-request at classiccmp.org wrote: >> Hi guys, >> >> I've looked trough my Z80 Stuff some minutes before b'cause a friend wanted >> an Z80A CPU, ok found it. In a Bag 6 uPD780-1 which are also Z80A's, I found >> two uPD7201C. I've googeled some time before that the uPD7201A is some >> Z80-SIO - alike, has an other Pinout for example and should be compatible > Well, it's synchronous/asynchronous serial chip, but I don't think it's > very similar to the Z80-SIO Its a SIO like part (same register structure) with one difference the interface is 8085/8088/8086 compatable. Its awkward to use with Z80 and why would one as the SIO can be had. The biggest differnce is the interrupt is a Call(8085) or vector(8088) and can interact with the 8259A. FYI the part was created by NEC and the 8274 was the licensed copy though Intel often lagged by a mask rev. Try google.. If I had a scanner I have the NEC Microcomputers data catalog, alas no scanner. Allison

12 years, 5 months

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The mystery of the STRADDLEPRINT aka Axiom ParallAx CD printer interface

by drlegendre＠gmail.com

Now what the heck is going on here? I needed to hook up a printer to my Commodore 64, and as luck would have it, there was an interface among my stuff. It's a STRADDLEPRINT Interface with Graphics - but I had no manual for it, and didn't know how to configure it, etc. Google has nada for it. Digging through my manuals, I came across a bad photocopy of the manual for an Axiom ParallAx CD interface for Commodore. I thought maybe, just maybe, it might have some clues for me. So I start going over it.. and my luck, it seems to describe what I have rather well.. rather TOO well, in fact. As the similarities piled up, I finally opened the Straddle case and.. the board is marked "ParallAx CD ver. XX". So once again, what the heck is going on, here? Was Straddle actually Axiom / Parallax - or perhaps vice-versa?

12 years, 5 months

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What to preserve from the pre-IP era

by mark.kahrs＠gmail.com

What about virtual circuit (not over IP) stuff? For example from Bell Labs: Datakit, Xunet, etc?

12 years, 5 months

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Wolfgang Eichberger's PDP-11 OS History Blog

by captainkirk359＠gmail.com

I'm wondering if any one has archived the contents of Mr. Eichberger's blog pages that have a list the various PDP-11 operating systems? His old blogspot page says the content has moved to his new site. And the new site -- at least to me -- appears to be rather lacking in any form of content. It was a really good reference, and now that I finally have some time to actively get back into my classic computing hobby, I can't find the reference list of operating systems. (I mostly am trying to find the which version of RSX-11/M+ is most current, and which is the most current RSX-11/M+ is available for download.) Also, does anyone have a copy of the DSM-11 tape from the Computer Conservation Society webpage? Trying to download the image from their provided link 404's. Thank you, Christian -- Christian M. Gauger-Cosgrove STCKON08DS0 Contact information available upon request.

12 years, 5 months

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cctalk Digest, Vol 125, Issue 42

by mtapley＠swri.edu

On Jan 20, 2014, at 4:23 PM, Al Kossow wrote: > Just throwing this out to see what other people think. > > I suspect we're at the tail end of the usage life of devices that don't speak IP. > I'm mostly thinking about networking devices 80's > 00's > > So, what needs to be preserved? How much of this does CHM need to do? Is any other > collecting institution already covering this? How much is within scope? Al, you are probably very far ahead of me, but I have two suggestions: 1) ?bridge? pieces - the Kindergarten example is probably a Dayna EtherPrint-T or Asante EN/SC type device that allowed a LocalTalk network to bridge to an Ethertalk network. In terms of long-term, serious restoration/preservation, having one of those available means having a device that could be (maybe) deconstructed to give information about both types of network. It also seems pretty helpful to anyone trying to restore hardware on the less-used (LocalTalk) side. 2) Interconnects used to parallelize processors in supercomputer families - Infiniband and the like. This may be a hard goal, but it could be that retiring supercomputer sites may have the stuff available, and recalling the Cray software discussion going on now, this might be a good time to ask. And, looking far ahead, some characteristics of these interconnects will be needed to supply the voracious data demands being put on the internet, so they may serve as prototypes for data center interconnects in widespread use years from now. My two cents, HTH. - Mark

12 years, 5 months

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"The search for the lost Cray supercomputer OS"

by lproven＠gmail.com

No doubt you will all pick many holes in this, but... Summary: Chris Fenton and Andras Tantos decided they wanted a model of the famed supercomputer for their desk. It turned out to be a more complicated project than expected. http://gigaom.com/2014/01/14/the-search-for-the-lost-cray-supercomputer-os/ -- 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 Tel: +44 20-8685-0498 ? Cell: +44 7939-087884

12 years, 5 months

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windows ce

by kspt.tor＠gmail.com

On 17 January 2014 20:20, John Foust <jfoust at threedee.com> wrote: > At 11:26 AM 1/17/2014, Chuck Guzis wrote: >>On 01/17/2014 04:54 AM, Liam Proven wrote: >>>You cannot install this onto a PC. It is not a PC OS and it was not >>>available to the public. It *only* came in the ROM of certain >>>battery-powered pocket devices. >> >>Not entirely true! WinCE was extensively deployed on x86 thin clients. > > Like point-of-purchase systems, right? > > - John Some years ago I watched the in-flight movie system on a Lufthansa flight trying to reboot (the type with one video screen embedded in the chair in front of you). IIRC it took something between five and ten minutes to boot. -Tor

12 years, 5 months

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