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

by kylevowen＠gmail.com

Greetings, I have updated the SerialDisk documentation tonight. I created a fairly descriptive how-to guide on how to set up a new SerialDisk system. For the inexperienced with OS/8, it provides some information on running programs like EDIT, PAL8, and BUILD. For the OS/8 gurus, it shows some basic syntax of the SerialDisk server and related utilities. There should be a little something for everyone in there. If someone has an Omnibus machine and an aux TTY card and wants to try it out, I'd be curious to see how accurate my documentation really is. A big thanks to David Gesswein for trying out my early attempts at the server, Vince Slyngstad for creating a handler that will work well for the earlier -8s, and Philipp Hachtmann for making some needed modifications to my coding style. :) The changes will be getting pushed in as soon as I have time to patch them in and test them. Eventually, I'll have simh working with the server by means of telnet, but this is to come as I have more time. https://github.com/drovak/os8diskserver Kyle P.S. I forgot if I mentioned: I found out that it wasn't my server that was acting up with BASIC halting at 10206; it was the disk image I was using. It works fine on the current release using diagpack2.rk05. I've not had a single bug with the handler/server that can't be explained by user error since the latest changes. :)

12 years, 4 months

2
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Easiest way to get MAINDEC diags onto a PDP-8 (sans paper tape)

by rick＠rickmurphy.net

At 04:46 PM 2/13/2014, Marc Howard wrote: >However (going from memory here) if I try: > >.RUN SYS BUILD >$IN TC08 > >I get a message like (I think) > >FILE NOT FOUND > >I've tried all kinds of variations on this and I can't seem to install the >TC08 handler. > >Could you tell me what I'm missing/doing wrong? The diagpack2.rk05 image >has TC08.SY and TC08.HN; isn't that what I need? The convention on that pack is that a .SY file is a system handler and a .HN file is a nonsystem handler. You should be able to use $ IN TC08.HN Before you do this, use SET SYS NO INIT before you run BUILD since the init command causes build to be overwritten in memory! -rICK

12 years, 4 months

1
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ASR 33 Baud and Rate

by ball.of.john＠gmail.com

>Didn't we do this a couple of weeks ago? :-) I think we did Tony but my memory is so bad it drifted off into nowhere-land. I should really start writing these things down. :@) Anyways, right, so I forgot it's Mark parity and not even parity. That and an unlelated problem with a rogue decoupling cap was making me scratch my head for the last week. Hayes Smartmodem could send and receive on every other terminal I owned. Why the heck would it only receive on the teletype?? :\ -John

12 years, 4 months

1
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Sigma serial card cable for LSI-11

by tiggerlasv＠aim.com

> An acquaintance of mine is looking to hook up his Heath/Zenith LSI-11 system to his H/Z-29 terminal. > The system has the Sigma Information Systems 400200 interface card. > I found him a copy of the manual but before attempting to build his own cable he was wondering > if an existing cable might be found for RS-232 operation with this card. > Any ideas on a source for something like that? If they are 10-pin headers, then they should be pin-compatible with any of the DEC serial headers and cables. A real DEC DLV11-J uses the CK-DLV11-J cabinet kit, which should work adequately if you can find one. You could also use the (CPU) cabinet kit for a MicroVAX or PDP-11. The MicroVAX version looks like this - http://www.mcmanis.com/chuck/computers/vaxen/images/ba23.gif These days, it would probably be more cost-effective to roll your own cable, particularly if you're only going to be connecting one device to the system. T

12 years, 4 months

2
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cctalk Digest, Vol 126, Issue 18

by FRED＠miser.misernet.net

>From: IN%"cctalk at classiccmp.org" 10-FEB-2014 12:01:59.95 >To: IN%"cctalk at classiccmp.org" >CC: >Subj: cctalk Digest, Vol 126, Issue 18 >From: Kurt K <kurtk7 at visi.com> >To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> >Subject: Re: contemporary XT software? >Who is downloading currently? Have you tested access by trying to download? >It sounded like everyone here was cut off. Somewhere saved is no good unless >that location is eventually discovered. Does anyone know of other mirrors? I believe I have the whole thing (or at least the VetusWare directory). It's rather large. Think more than 1GB+ Options? Torrent? I have an (what I think is) unlimited hosting account but I'm not sure how they'd take to getting crushed or racking up 500GB of transfer. Fred

12 years, 4 months

2
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LA12 correspondent

by simski＠dds.nl

Hi, as my first post here I would like to ask a question about a DEC correspondent terminal with a broken power supply. due to a shorted capacitor in the output stage, a whole train of parts has failed, including some diodes, a coil and the main switching transistor in TO-3 case. that is the part with a strange partnumber: A8250 151278200 I suspect that the 8250 is a manufacturing date and the long number a internal DEC number, but what sould be put in its place. i was thinking about just using a irf840 mosfet, but i have no idea as if this would work. any thoughts (or maybe some schematic?) -- Met vriendelijke Groet, Simon Claessen drukknop.nl

12 years, 4 months

4
8
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windows 98

by elson＠pico-systems.com

On Wed, Feb 12, 2014 at 11:51:10AM -0600, Jon Elson wrote: [...] >> I don't think VMware will run Win95 or Win98. If that is wrong, I'd sure like >> to know, as I could pack up an ancient system I still keep around for >> archival reasons. > Works for me: > > http://abuse.mooli.org.uk/win95.png > > The installer goes like a rocket on a SSD and 2.4GHz CPU! > Very, interesting. What version of VMware are you using? I tried this some time ago, and it said "Windows 95 is not a supported OS". Jon

12 years, 4 months

4
3
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AlphaCPU files & software

by woyciesjes＠sbcglobal.net

I've got about 2.5GB uncompressed of various drivers & software I've collected. Bits for Multia, AXPpci-33, Alpine Alpha motherboard, DEC3000-400, Win2K for Alpha, EB64+, Diskkeeper, VAX 3100-M38, V62X(?). Who can/wants to have a copy of this? I've attached a directory output for your curiosity. -- --- Dave Woyciesjes --- ICQ# 905818 --- CompTIA A+ Certified IT Tech - http://certification.comptia.org/ --- HDI Certified Support Center Analyst - http://www.ThinkHDI.com/ Registered Linux user number 464583 "Computers have lots of memory but no imagination." "The problem with troubleshooting is that trouble shoots back." - from some guy on the internet.

12 years, 4 months

4
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LA12 correspondent

by hp-fix＠xs4all.nl

Simon, Die checked the filter elco's. You should check the leakage current and ESR values. If the mosfet is running hot you should check the board for shortcuts. Tantalum caps have a habit of getting shortened when they get aged. Also a not working driver can cause a large current, this can be checked with a scope. Check the signals at the base of the drive transistors. I suppose you checked the voltages for ripple and noise. -Rik -----Oorspronkelijk bericht----- Van: "Simon Claessen" <simski at dds.nl> Verzonden: ?13-?2-?2014 10:00 Aan: "On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Onderwerp: Re: LA12 correspondent On 12-02-14 23:18, Tony Duell wrote: > In whuich case it's almost certainl the right sort of part. My > experience suggests that SMPSUs fail for may more trivial reasons than > having a MOSFET fitted in palce ofr a bipolar transistor. > > The mosfet runs hot, even with the original cooling, and the paper is not advancing, so there must be something wrong somewere else in the machine. I actually would love to find out what type of transistor was there originally relabeled as digital part # 151278200 -- Met vriendelijke Groet, Simon Claessen drukknop.nl

12 years, 4 months

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Anyone have any use for SCSI CD drives?

by lproven＠gmail.com

I have 2 for sale - starting at 1p, which is under 2? and the lowest eBay will let me set. As before, if no sale, free for the postage. Yamaha CRW4416SE CDRW, SCSI 2 http://www.ebay.co.uk/itm/271399508349 NEC CDR500 / Multispin 3x http://www.ebay.co.uk/itm/271399524488 Also a symmetrical PC joystick for left-handed gamers as well as right-handed ones http://www.ebay.co.uk/itm/271399535952 -- 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, 4 months

3
2
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windows 98 pc

by rmx44＠aim.com

hello all. i happen to have a dell optiplex gx50 and i got 98 on it and when i started installing stuff to it i got so far then the os stopped booting at all and black screened. i wish i could find a good windows 98 computer or setup. if anyone could help out let me know

12 years, 4 months

8
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[u-u] Someone's looking for old software

by johnwallace4＠yahoo.co.uk

>Date: Wed, 12 Feb 2014 08:43:43 -0500 > From: allison <ajp166 at verizon.net> > To: cctech at classiccmp.org > Subject: Re: [u-u] Someone's looking for old software > Message-ID: <52FB7A8F.4080306 at verizon.net> > Content-Type: text/plain; charset=ISO-8859-1 > > > >> Will VAXELN even run on a 3100 or a 4000? I > thought it was limited to Q-Bus > >> systems, but won't be surprised if I'm wrong. > >> > > > > It runs on any VAX. However its not a OS. Its > closer to a IO subsystem > and scheduling > package (RTOS). Like many RTOS packages the basic > system is fairly > useless and not > a user environment. Its used to make real time > systems. Examples that > used it were > LPS40(qbus), LPS20(not Q), LPS32(not Q) and the terminal > software for > the VS2000 > (very not Q). If the bus/IO structure is not Qbus or > other DEC standard > bus then IO > is up to the developer. > > Allison VAXELN is/was a host/target setup for developing distributed realtime VAX applications (ELN = Executive for Local Networks). Hosted on any sensible VAX/VMS system, with targets being a subset of VAX, MicroVAX, VAXstation systems. And a few oddities too (e.g. RTVAX300 VAX-in-a-module, KAV30 RTVAX300-on-VMEbus, rtVAX1000 (KA630-variant in a MicroVAX2 chassis), etc. Obscure targets without publically available VAXELN support (?) include the aforementioned LPS32 and LPS40 VAX-powered printers. The SPD seems to be hard to find online, as does the VAXELN Technical Summary, so what follows is from memory. The usual suspects do seem to have some of the VAXELN docs online in decw$book format. The host and target might be separately licenced. Early VAXELN applications could be written in a multi-threaded variant of PASCAL called EPASCAL. Later, other standard VAX languages were supported too: Ada, C, maybe Fortran, the usual Pascal. Or VAX Macro. The runtime environment was a dedicated RTOS environment, not VMS (e.g. no demand paging) although some VMS-compatible facilities (DECnet, RMS) and routines (some LIB$)were offered. You compiled your application in the usual way, and linked it with VAXELN-specific libraries using the usual linker. The VAXELN system builder was then used to build a bootable system image. A system image would include the hardware-specific kernel and any required VAXELN device drivers. Any optional facilities (VAXELN distributed name service, networking using DECnet and/or TCP, CLI, Xserver, debug) would be combined with any required user applications to make a bootable system image file Booting was supported over the LAN (MOP, maybe bootp), from disk, and in an odd few cases, from ROM. A VAXELN source kit was sold at one stage, though it was far from essential. Pretty much the whole target end was written in PASCAL. In the early days VAXELN had its own threads-aware debugger (hosted on VMS and networked to the target). Once VMS DEBUG got that capability (which came initially with DEC Ada? sometime around VMS V4?) VAXELN targets could be debugged remotely using the standard VMS debugger. Deep joy. Iirc, VAXELN V4.3 or thereabouts used to be on CD in the 1990s (1993?). There were a couple more versions after that, but no huge changes I can remember. When Alpha came along, VAXELN was left behind. DEC worked with Wind River to get a version of VxWorks for Alpha (VxWorks was an "industry standard" RTOS, somewhat different in concept to VAXELN). Both claimed to have POSIX compatibility for the RT stuff. A thin VAXELN veneer was added on top of VxWorks for those who might be interested. The product became part of DEC's Embedded+Realtime Group, which was sold off to SMART Modular Technologies, in the late 1990s (?), and the product subsequently vanished. I haven't recently been able to establish the product's current status, though I didn't try real hard. It was a great RTOS if you wanted to think more about the application design and less about the intricacies of device drivers and networking and other such traditional RTOS trivia. I'm told its concepts mapped nicely onto the "channels and pools" from "Communicating Sequential Processes". Be interesting to know what lies behind the original enquiry from LinkedIn. I may be able to offer more info if necessary. It might not be quick, and the formatting may be messed up again (sorry). Hope this helps, regards John

12 years, 4 months

2
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[u-u] Someone's looking for old software

by cctech＠beyondthepale.ie

> >Will VAXELN even run on a 3100 or a 4000? I thought it was limited to Q-Bus >systems, but won't be surprised if I'm wrong. > I have come across a VAXELN image for a VAXStation 2000 which I think implemented some sort of X Terminal on it. (While not Q-Bus based, at least some of the VAX 4000 range do have facilities attach Q-Bus periperals.) Regards, Peter Coghlan.

12 years, 4 months

3
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Infotek MF-300 1Meg -FP68881 Memory Card

by shutchman＠gmail.com

Does anyone have the setup and documentation for this MF-300 CCA? I would like to install it in my HP9836C and run the Infotek BC204 Basic Compiler , but I do not have any info on how to set the DIP switches.( there are 9 switches. -- e-?

12 years, 4 months

1
0
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DEC VT101

by cctech＠beyondthepale.ie

> >I have a box of them, used, along with the monitor boards and almost all >vt1xx logic boards. I have some of the boards handy, but the rest I won't >be able to dig out for a while due to more pressing personal priorities. I >will post when I find them. > Hi Paul, I have been looking for a flyback transformer for a VT220, part number 16-26299-01 (or possibly 16-21181-01 which appears to be the same thing with a different mounting arrangement). I would appreciate if you could keep a lookout for one of these when you are searching. Regards, Peter Coghlan.

12 years, 4 months

1
0
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Booting OS/8 on a PDP-8/E from a PC

by kylevowen＠gmail.com

Greetings, I've been hard at work on an OS/8 system handler that negotiates block transfers between a PC running a special disk server. The two are currently working great! I was able to use the BUILD utility to make my own OS/8 V3D disk and boot from it. I then thought that it may be possible to take an existing RK05 image and replace the bootloader and system handler with my own. Sure enough, it works! Check it out: https://www.youtube.com/watch?v=YkqVJ6ShV5A I'll be releasing the source code for all of this within the next few weeks as I make minor changes (and mostly tidy it up). A few details: the handler resides in one page and talks to the server to negotiate the transferring of pages. To keep the handler small, I'm offloading as much stuff onto the PC as possible. There's no error detecting (although this hasn't been an issue for the millions of bits I've sent thus far) and the features of the handler are pretty basic. The disk server is written entirely in C and has been successfully compiled on Mac OS X and Windows under Cygwin. The handler sends serial data to an M8650YA (currently addressed at 40/41, the aux TTY addresses) operating at 19200 baud. This is pretty slow still, as you can see from the video. But it's usable! And it's bound to get better with a few more improvements. To bootstrap the system, the RIM loader is toggled in as the primary bootloader, and a secondary bootloader is sent in RIM format. Start the system at 0020 after that, and it'll boot right up. In summary, anyone with a spare M8650, M8655, or other serial card can now boot OS/8, even if you don't have an RK05, DECtape, RX01/02, etc.! If you have a parallel I/O card, another handler could be made for even faster transfers, I imagine. This would require some extra hardware, though. Let me know if you have any questions. Again, I'll see about distributing the source in a couple of weeks, or as I have time. Kyle

12 years, 4 months

15
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VCF Southeast 2.0

by blstuart＠bellsouth.net

Vintage Computer Festival Southeast 2.0 May 3,4 2014 The Atlanta Historical Computer Society and the Computer Museum of America are pleased to announce the second annual Vintage Computer Festival Southeast. We have selected the 3rd and 4th of May to make it easy for people to attend both VCF East and VCF Southeast this year. The venue will be the same former CompUSA store in Roswell GA as last year. This year's exhibit space will be greatly enlarged over last year, occupying the whole retail space of the store. About 2/3 of the space will be the exhibition LINK ? Personal Computing from Switches to Pockets. The exhibit is a journey from the present back to the Kenbak-1. The remaining 1/3 of the retail space will contain hobbyist vintage computing exhibits. For those who missed last year or who would like to see it again, the Apple Pop-Up museum from last year's festival will again be available. The popular retro-gaming area and introduction to soldering activity will be available again. This year, we are also working to bring in a number of vendors, assemble a stellar slate of speakers, and offer workshop experiences. Of course, the kids' scavenger hunt will be back this year too. More details as they become available. Hope to see you all there.

12 years, 4 months

1
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FREE: Bernoulli Box - SCSI dual 90 - B290X-UNI - located in So Cal.

by tosteve＠yahoo.com

Located in Orange County, CA 92656 Free for the cost of shipping. Working condition unknown. No carts included. See pics here: http://bitpig.com/temp/bernoulli-1.jpg http://bitpig.com/temp/bernoulli-2.jpg

12 years, 4 months

1
0
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Need DEC Diode

by elson＠pico-systems.com

The RICM needs to repair a S603 triple pulse amplifier flip-chip. The failed diode is listed as a DEC D-664. The DEC enthusiast cross-reference lists show it as a 1N3606. These diodes are nearly impossible to find. Can someone recommend a substitution for the 1N3606 diode? The 1N3606 is a Silicon diode (that's lucky, Germanium diodes are probably hard to find, now). 75 V reverse, 50 uA reverse leakage, 100 mA forward current. Unfortunately, my old book doesn't have much more info than that. But, I doubt you could go wrong with a 1N914 or 1N4148 signal diode. Any silicon switching diode will almost certainly work fine. Jon

12 years, 4 months

1
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[u-u] Someone's looking for old software

by toby＠telegraphics.com.au

On 11/02/14 10:13 AM, arocker at Vex.Net wrote: > >>From LinkedIn's "Vintage Computers" group, the relevant bits: > > "I?m looking for some old software and license's for a VAX 3100 and VAX 4000 > > I?m looking for the Operating System called ?VAXELN? > > License part number is QL-375AB-AA OR QL-375A*.** either will work > > The software is QT-375AA-**" > > If somebody on the list has a dusty specimen of "VAXLN", whatever that is, > I'll forward the link. These are two mailing lists that can certainly help, so I'll forward this message to both. --Toby > > _______________________________________________ > u-u mailing list > u-u at unixunanimous.org > https://unixunanimous.org/mailman/listinfo/u-u >

12 years, 4 months

2
1
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Need help with OS/8 + TC08

by cramcram＠gmail.com

Hi, I've finally got my TC08/TU56 passing the maindec diags now. I've also tried to copy some TC08 bootable tape images to my drives. I can write them, read them back and do a diff with no errors using resttc08/dumptc08. However when I try to boot using one of these tapes several blocks are read in and then the system crashes and burns with no console output. As an experiment I'd like to see if I could format/read/write files from OS/8 running on my RK05 but it seems like all the images I've looked at are configured for a TD8E and don't have the TC08 driver on disk. I'm not an OS/8 expert but I tried a build and when I typed (I'm going from memory here): IN TC08,DTA0 ...I got a message like "HANDLER NOT FOUND" (or something to that effect). Looking at the disk didn't reveal any TC08 drivers. The PRINT command did show that it had been configured previously for TD8E support. So how can I get the TC08 handler onto my RK05? Could I PIP this from the serial connection somehow? Also, what is the correct way to do a build with TC08 support? Any thoughts/insight appreciated. Thanks, Marc

12 years, 4 months

2
1
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DEC VT101

by aswood＠t-online.de

Hello all, I'm looking for DEC vt101 schematics and maintenance manual. I've a vt101. The power supply and logic board is ok. All power levels and video signals are supplied to the video board properly, but there is no dispay on the crt and I'm suspecting that the video board is defective. Andreas

12 years, 4 months

7
11
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Need DEC Diode Substitution

by michael.99.thompson＠gmail.com

The RICM needs to repair a S603 triple pulse amplifier flip-chip. The failed diode is listed as a DEC D-664. The DEC enthusiast cross-reference lists show it as a 1N3606. These diodes are nearly impossible to find. Can someone recommend a substitution for the 1N3606 diode? -- Michael Thompson

12 years, 4 months

6
8
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Could someone make me some 400k System 2 and/or 3 disks?

by arrowrunner＠gmail.com

I just picked up two original Macintosh 128k systems. I don't yet have the capability of making these disks, so if anyone here does I'd give you a few bucks for your time. I'd like to get the OS disk and the utilities like paint and whatnot. I'm in the US by the way. Thanks -- Sent from my time machine

12 years, 4 months

3
2
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OS/8 Disk Server with simh

by kylevowen＠gmail.com

Greetings, Does anyone have any tips on connecting an application like my disk server (which ordinarily talks to a serial port) to an auxiliary teletype on simh? I'd love to be able to easily debug my handler and such with breakpoints, memory inspection, etc. Or, if someone wants to tackle this with the provided code, that'd be awesome. https://github.com/drovak/os8diskserver I'm trying to figure out why running most any BASIC program in OS/8 results in a halt at 10206. In other news, I successfully FOTP'ed an entire RK05 side to another disk all with the disk server. Seemed to finish with no errors. Unfortunately, at 19200 baud, it took many minutes to complete. Thanks, Kyle

12 years, 4 months

1
0
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Stardent Titan on eBay

by seefriek＠gmail.com

http://www.ebay.com/itm/Extremely-Rare-Vintage-Computer-Stardent-Computer-I… I'd hazard a guess you could count the number of complete Titans on a hand or two.

12 years, 4 months

5
4
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DEC VT101

by marvin＠west.net

> I measured the resistance of the flyback transformer as of four > Ohms. From my point of view this is a proper value. > > Andreas Just curious for the reason you think a resistance measurement will show up a shorted turn(s) in the flyback? Marvin

12 years, 4 months

1
0
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Vintage keycaps

by brad＠bettercomputing.net

Thanks Mike. ?I've tried a few searches for the keypunch keys but no luck. ?I don't have the actual article for the keyboard.. just the TV Typewriter, which features the same keyboard on the cover but not the greatrst quality. ?I am relying on Matt Holley's little archive. ?Here is a link to a black and white of it. ?Keys are light grey. http://www.swtpc.com/mholley/RadioElectronics/Feb1973/RE_Feb_1973_pg55.jpg Sent from Samsung Mobile <div>-------- Original message --------</div><div>From: MikeS <dm561 at torfree.net> </div><div>Date:02/10/2014 12:00 PM (GMT-08:00) </div><div>To: cctalk at classiccmp.org </div><div>Subject: Re: Vintage keycaps </div><div> </div>----- Original Message ----- > Date: Sun, 09 Feb 2014 10:50:57 -0800 > From: Brad Hodge <brad at bettercomputing.net> > One other question.. for my TV Typewriter project I am hoping to ape > either of the two keyboard designs featured in the magazine.. either the > blue/red keypunch/teletype style keys of the prototype or the custom keys > with keycaps featured in the Feb 1973 issue. Wondering if anyone knows of > possible sources for these. ?I think part of my problem is when searching > ebay i may not have exactly the right words or phrase.. ie. Not sure if > 'keypunch' is the right term for the keys used in the prototype. I'm > hoping to make this as close to one of the two featured designs as > possible so it's important to get the keys right. > > Thanks muchly, > > Brad I can't make out the 'normal' keyboard and my issue of September 1973 RE is mysteriously missing, but I believe the black, red and blue keyboard is from an MDS key-to-tape unit. I bought a bunch of those surplus back in the day because the switches were MicroSwitch magnet/reed switches, ideal for the harsh oil-filled environment of an industrial data-collection terminal I was building and selling at the time. I thought I still had one or two but if I do I can't find them in Chaos Cellar; will let you know if I do find anything. If you send me a close-up of the other keyboard I might have something that would be equivalent; I still have boxes of different keytops from the above-mentioned project. m

12 years, 4 months

1
0
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Need DEC Diode Substitution

by steve＠tronola.com

Hi Michael At 07:49 AM 2/11/2014, you wrote: >The RICM needs to repair a S603 triple pulse amplifier flip-chip. The >failed diode is listed as a DEC D-664. The DEC enthusiast cross-reference >lists show it as a 1N3606. These diodes are nearly impossible to find. Can >someone recommend a substitution for the 1N3606 diode? >Michael Thompson --- The DEC schematic for the S603 does indeed list 1N3606 as equivalent to the D664. I found complete info on the 1N3606 in the GE 1964 Transistor Manual pp.439-446, pp.564-565, p.587. It does have some special processing, including gold doping and controlled forward characteristics. A couple parameters which stood out are: - Reverse recovery time: 2ns (nanoseconds--some sources show microseconds, woof) - Forward voltage 0.55Vmax at 0.1mA, 0.67Vmax at 1mA. Note that some of the online data listed for this part is misleading or wrong. Though lesser diodes would probably work, no doubt you would prefer to replace it with one at least as good, for the sake of preserving the integrity of the restoration. Anyway, I found that the 1N3606 is claimed to be available: Qty-61 shown here. Price is $1.54ea: http://www.ralphselectronics.com/SearchResults.aspx?criteria=1N3606 This source shows Qty-173 in Irvine, CA: http://partsearch.area51esg.com/icswdl2.aspx?user=area51&user=area51&part=1… New Jersey Semiconductor claims Qty-1424: http://njsemi.com/product-request/ There were other sources, if those don't pan out. Steve L.

12 years, 4 months

1
0
0 0

VAXStation II/MFM emulator

by djg＠pdp8online.com

So far not going well. Didn't seem to have any video from the video board so pulled that which gives me a serial console. Trying to boot from my emulator gives 4C DEVINACT. If I'm on the correct drive select I get the error quicker so its seeing the emulator. TK50 is just blinking red so I can't boot the diag tape. Online seems to say a good cleaning may fix this. Next tried to find the diagnostic floppies. Found these (uvax2diag1) which may be what I want. http://www.headcrashers.org/comp/rx50/index.html Get same 4C DEVINACT trying to boot them. Page didn't give PUTR command used to create images. I tried both with and without /binary. Does anyone know of known good diagnostic floppy images hopefully with information on how to write them back to a floppy? I assume the full diagnostic hasn't shown up so all that is available is the stripped down customer one. Also what is the name you give to boot for the hard drive, floppy, and tape? Manuals seem skimpy on details and this machine doesn't have the show command. Also I was assuming the bottom drive is the boot drive based on the manuals I have. Was this normal? I haven't tried putting the real drive back in and seeing if its bootable. Since I don't know the password I'll either have to hard shut it down if it boots or try one of the procedures for resetting the password. Looks like it is VMS.

12 years, 4 months

4
6
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Xebec Hard Sector Floppy Drives

by kylevowen＠gmail.com

Greetings, I am attempting to cobble together a system and non-system device driver for OS/8 to allow me to use my new OS/8 DiskServer utility with my -8/M and its Xebec floppy drives. I have quite a bit of documentation on these drives (that will eventually get pushed to bitsavers, if I find more time) but unfortunately, I'm lacking in software. Lack of handlers is okay. The instruction manual gives some programming examples, which is enough to get me started. But it also cites a test program which is supposed to be run to initialize any new disk. >From the book: Test 1: Format Sectors Function: To format a new disk or prepare a disk for a series of diagnostic tests. There is no prerequisite for Test 1 which is normally the first test to be run int he diagnostic sequence. Test Procedure:

12 years, 4 months

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Anyone interested in Mac LC PDS-slot Ethernet cards?

by lproven＠gmail.com

Anyone need to network a Mac with an LC slot? I find myself with 3 LC-slot Ethernet cards to sell, but, sadly, no LC any more. Just sold my 2 LCs (a dead LC & a working LC 475) & neither buyer wanted Ethernet. I'd thought it would make them more desirable; I was apparently wrong. http://www.ebay.co.uk/itm/271397612602 http://www.ebay.co.uk/itm/271397622607 http://www.ebay.co.uk/itm/271397626012 -- 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, 4 months

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Stardent Titan on eBay

by michael.99.thompson＠gmail.com

> > From: Ken Seefried <seefriek at gmail.com> > Date: Sat, 8 Feb 2014 21:32:50 -0500 > Subject: Stardent Titan on eBay > > http://www.ebay.com/itm/Extremely-Rare-Vintage-Computer-Stardent-Computer-I… > > I'd hazard a guess you could count the number of complete Titans on a hand > or two. > The RICM has a Ardent Titan from before Ardent merged with Stellar to form Stardent, and before the combined company was bought by Kubota Pacific. Gordon Bell worked there. http://www.ricomputermuseum.org/Home/equipment/ardent-titan -- Michael Thompson

12 years, 4 months

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OS/8 Disk Server Release

by kylevowen＠gmail.com

Greetings, I spent much of the weekend improving my disk server and OS/8 handlers. I now have some great new features, and it's working well enough for me to submit to the world. I know there are still issues at present, but I'm hoping some OS/8 gurus can help debug some of them. https://github.com/drovak/os8diskserver I encourage other developers to help each other out (and myself) by submitting changes to the code base. I'd like to make this as good as possible for everyone. I'm pretty new to git and GitHub, so please let me know if I've screwed something up there. Here's some more notes: - I'll be releasing an actual how-to guide within the next few days. For now, the adventurous ones can help beta test it. - The server has been compiled successfully under Cygwin, Debian on Raspberry Pi, and OS X Snow Leopard. - The OS/8 system handlers use some PDP-8/E and later instructions. If someone wants to help go back through and track these down, we can see if a more compliant version will still fit in the allotted space. - The server now uses dumprest/simh .rk05 images exclusively. - There is a utility to install a new system handler and bootloader on an .rk05 image. It seems to work fine. - There is a utility to convert Bernhard Baehr's simulator's format to the dumprest/simh format. It also seems to work fine. - The server supports mounting two disk images at once. This requires the use of the non-system handler which has four entry points. The first two point to the two that the system handler uses. The non-system handler can eventually be expanded to support several more disks as well. - There's definitely an issue present. Running BASIC with a simple test program halts the computer after 10206. I've not had a chance to further investigate why. - PIP and RESORC will likely need to be updated to reflect that the handler device type supports the same number of blocks as an RK05. This is described in Appendix B of the OS/8 Software Support Manual. - The server does its best to check that a disk write will not go outside the boundaries of the disk. - The server does its best to verify that a disk read will not overwrite the system handler Also, if an OS/8 guru can help me out, I'd appreciate it. Will a read/write >from SYS: on an RK05 past block 3248 (decimal) succeed? That is, can a read or write carry over from one side of the platter to the other? After looking at the RK8E system handler, I would say this is a yes. It looks like a call to SYS: with a block number of 6260 (octal) is the same as a jump to the second entry point. However, is this behavior desirable or needed? I would have expected the two sides to be logically separated in the handler. My server attempts to do just that by essentially chopping the .rk05 image in half. If a transfer goes past the end of either half, an error occurs. However, if this is not what should happen, I can change that. As always, feel free to email me if you have any questions or comments. If you have any ideas for how to make my program better in any way, I'd love to hear them. Thank you all for your support, Kyle

12 years, 4 months

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Vintage keycaps

by dm561＠torfree.net

----- Original Message ----- > Date: Sun, 09 Feb 2014 10:50:57 -0800 > From: Brad Hodge <brad at bettercomputing.net> > One other question.. for my TV Typewriter project I am hoping to ape > either of the two keyboard designs featured in the magazine.. either the > blue/red keypunch/teletype style keys of the prototype or the custom keys > with keycaps featured in the Feb 1973 issue. Wondering if anyone knows of > possible sources for these. ?I think part of my problem is when searching > ebay i may not have exactly the right words or phrase.. ie. Not sure if > 'keypunch' is the right term for the keys used in the prototype. I'm > hoping to make this as close to one of the two featured designs as > possible so it's important to get the keys right. > > Thanks muchly, > > Brad I can't make out the 'normal' keyboard and my issue of September 1973 RE is mysteriously missing, but I believe the black, red and blue keyboard is from an MDS key-to-tape unit. I bought a bunch of those surplus back in the day because the switches were MicroSwitch magnet/reed switches, ideal for the harsh oil-filled environment of an industrial data-collection terminal I was building and selling at the time. I thought I still had one or two but if I do I can't find them in Chaos Cellar; will let you know if I do find anything. If you send me a close-up of the other keyboard I might have something that would be equivalent; I still have boxes of different keytops from the above-mentioned project. m

12 years, 4 months

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Vintage keycaps

by brad＠bettercomputing.net

One other question.. for my TV Typewriter project I am hoping to ape either of the two keyboard designs featured in the magazine.. either the blue/red keypunch/teletype style keys of the prototype or the custom keys with keycaps featured in the Feb 1973 issue. Wondering if anyone knows of possible sources for these. ?I think part of my problem is when searching ebay i may not have exactly the right words or phrase.. ie. Not sure if 'keypunch' is the right term for the keys used in the prototype. I'm hoping to make this as close to one of the two featured designs as possible so it's important to get the keys right. Thanks muchly, Brad Sent from Samsung Mobile

12 years, 4 months

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Re-done HD video on the Osborne 1

by feldman.r＠comcast.net

>Message: 5 >Date: Sat, 08 Feb 2014 13:17:12 -0500 >From: allison < ajp166 at verizon.net > >To: General Discussion: On-Topic Posts Only < cctech at classiccmp.org > >Subject: Re: Re-done HD video on the Osborne 1 > <snip> ? >>> readable screen at 80 chars (VS osborne 50 char). >> OB_nit: 51?? and scrolling to give the effect of reading a newspaper >> through a little hole in a piece of cardboard >50 or scroll it was tiny! 52 columns. <snip> >> Did they ever release that battery pack? >> I remember an EARLY interview where Lee was asked about the size and >> weight for a battery pack.? Lee responded, "How big is your CAR?? The 12V >> input is not for use while carrying." >> (Lee had a gold colored Honda Accord at the time; it did not have any >> non-stock power ports) >Never did.? Measured it and it was pretty painful at 12V CRT and video board >ate 40W alone the rest of the system was about 100W.? That meant your portable >battery was a 18ah gell cell for about maybe an hour or two.? If all the supplies >were of switch mode it was maybe possible to get it down some but the CRT >was killer. This was discussed earlier. I know that Evan K. says that Lee says it was never released, but I have one that I bought in Chicago at a regular computer store -- still have the receipt. It came with a glossy-printed Osborne (blue/grey) manual, so if it was not officially released, they got very close to that. I have pictures and have scanned the manual, which I can send to anyone interested. The Computer History Museum has?what they call an?"Osborne car adapter" (Cat #102646068) that is also part of the "Powr-Pak". Bob ? ?

12 years, 4 months

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MFM emulator update

by dm561＠torfree.net

----- Original Message ----- > > Date: Sun, 09 Feb 2014 08:59:51 -0800 > From: Chuck Guzis <cclist at sydex.com> >> Does your 7720 have a semi transparent cover? Couldn't tell from pictures >> online. > > I remember that thing--we evaluated one in the 70s. It had an > interesting intolerance of being out of level--if you raised the end > farthest from the spinning disk, the servo mech would have fits. We > stuck with the Shugart SA4000 until ST506-style 5.25" MFM hard drives > became available. I think we started with the 7MB Rodime model. > > Eventually, IMI merged with Onyx--I recall their building on North First > Street in San Jose bearing the logo "Onyx+IMI"--a singularly > unimaginative name, I thought. > > --Chuck Nice pictures of the three-platter 7740: http://www.flickr.com/photos/elliotli/7229124666/in/photostream/ Thanks for the tip, Chuck; if/when I get the 7710 spinning I'll be sure to check that it's level. m

12 years, 4 months

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Fwd: Der Weg zu Deinen Onkelz-Tickets

by aswood＠t-online.de

Anfang der weitergeleiteten E?Mail: > Von: B?hse Onkelz <boehse at onkelz.de> > Datum: 4. Februar 2014 07:29:33 MEZ > An: aswood at t-online.de > Betreff: Der Weg zu Deinen Onkelz-Tickets > Antwort an: boehse at onkelz.de > > > > > Der Weg zu Deinen Onkelz-Tickets > Hallo, > > hier sind sie: Der exklusive Link zum Ticketvorverkauf und ein pers?nliches individuelles Passwort. > > Dein Passwort f?r den Onkelz-Vorverkauf lautet: 5W8WTPA8 > > Mit Deinem Passwort kannst Du ab dem 07.02.2014 (12:00 Uhr) maximal 4 Tickets f?r die B?hsen Onkelz bestellen, nat?rlich nur solange der Vorrat reicht. > > Bitte beachte, dass ein Zugriff auf die Tickets vor dem oben genannten Zeitpunkt nicht m?glich ist, und insbesondere, dass Dein Passwort nur einmal verwendbar ist: Wenn Du Tickets damit angefordert hast und den Bestellvorgang abbrichst, verf?llt das Passwort! > > Termin: > 20.06.2014 Hockenheim ? Hockenheimring > > Um der Abzocke mit den Tickets Einhalt zu gebieten, wird der gewerbliche Wiederverkauf ausgeschlossen! > > Besten Gru? > Dein Onkelz-Team > > > > E.I.N.S. GmbH > Parkstra?e 44, 89312 G?nzburg > info at einsgmbh.de > > Amtsgericht Memmingen, HRB 15709 > Gesch?ftsf?hrer: Matthias R?hr, Peter Schorowsky > ? 2014 B?hse Onkelz

12 years, 4 months

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MFM emulator update

by dm561＠torfree.net

----- Original Message ----- Message: 1 Date: Sun, 9 Feb 2014 10:43:57 -0500 From: David Gesswein <djg at pdp8online.com> > I had seen some pictures like the one in this brochure that showed it had > a clear cover so you could see the mechanism and also have a big head > actuator coil etc that made it look more interesting than later drives. bitsavers.trailing-edge.com/pdf/imi/brochures/IMI_77xx_Brochure.pdf > Though the marketing material may have shown it better than the actual > drive. Unsure if its age but its not that transparent in this picture http://resetvector.com/wp-content/gallery/DataStorage/Winchester30-30/DSCN1… I think it might just be glare; all the ones I've seen had smoked plastic covers that let you clearly see the inside of the HDA, and if you look closely you can make out the platter and the voice coil in that picture.. And yes, it has a fairly large linear voice coil head actuator; fun to watch and you definitely knew when it was seeking. I've still got one (7710) here complete with its hefty power supply and was actually planning to test it this weekend, but no time, alas... m

12 years, 4 months

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Looking for SunOS 4.0.3e/4.1e installation tapes

by plamenspam＠afterpeople.com

Hello, I'm searching for SunOS 4.0.3e or SunOS 4.1e installation tapes images. These are the only SunOS 4.x releases which will run on 4MB Sun1E VME board. Regards, Plamen

12 years, 4 months

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contemporary XT software?

by bobvines00＠gmail.com

>> On Wed, 5 Feb 2014, Chuck Guzis wrote: >> >> NAPALM gives a link to ftp://176.107.241.42/public/VetusWare/ What is "NAPALM" in this instance? Is it a search engine of sorts for old software? Thanks, Bob

12 years, 4 months

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Wanted: Wyse WY-100 terminal manuals

by legalize＠xmission.com

I'm looking for manuals on the Wyse WY-100 terminal (user's guide, refrence manual, service manual, etc.). If anyone has them, or knows where they are available online, please email me. A little googling didn't turn anything up. This is a terminal from 1981 with split-screen capability: <http://terminals.classiccmp.org/wiki/index.php/Wyse_WY-100> -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://ComputerGraphicsMuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://LegalizeAdulthood.wordpress.com>

12 years, 4 months

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IBM PC/XT pieces

by brain＠jbrain.com

If you can file this away somewhere and consider it from time to time, I'd appreciate it. If someone finds a battered PC or XT or something that can function as a PC/XT, I'd love hearing about it. All I am seeing on eBay are collector-grade machines (with prices to match), and I'm just looking to have a permanent machine here to test XT keymappings and such with. An XT SBC would be ideal, if such a thing were ever made. I have a machine here at present (have not forgotten about you dabone), but at some point, I need to secure my own system for testing. Jim -- Jim Brain brain at jbrain.com www.jbrain.com

12 years, 4 months

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contemporary XT software?

by jules.richardson99＠gmail.com

Now that I seem to finally have a working XT clone, does anyone have suggestions for interesting (and available!) contemporary software to run on it? It'd be nice to load it up with a few games and productivity apps of the era. It's only got 512K of RAM (although I may have an expansion board somewhere), but it does have a 10MHz 8088 (well, if I can work out how to kick it into high-speed mode) and I've got a VGA card in there right now. I'm not sure if anyone is maintaining a software repository for early x86 PCs (and maybe what is out there will target '286 and above anyway)? cheers Jules

12 years, 4 months

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MFM emulator update

by gerardcjat＠free.fr

Very interesting !! David, would you elaborate on >> The IMI 77xx are neat looking drives. >> ( English is not my native language, and I am not sure I fully understand the implied meaning of this statement ) This is anyway a very interesting post as I am building David's interface right now ( last parts to arrive in a few days ... ) and my plans are to use it with an IMI 7720 drive !! Knowing the interface is a bit non standard and that I will have to modify "things". But, ** FIRST **, I will, I hope, make it works with a "standard" ST412 drive. --- Ce courrier ?lectronique ne contient aucun virus ou logiciel malveillant parce que la protection avast! Antivirus est active. http://www.avast.com

12 years, 4 months

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Signetics 8288

by brad＠bettercomputing.net

Hey guys, I am slowly acquiring parts for a retro build of Don Lancaster's TV Typewriter. I've scored quite a few chips, many surprisingly with early 1970s date codes. ?One I'm having trouble with though is the Signetics 8288 divide by 12.. cant seem to locate it. ?Anyone have a line on a supplier that might have these? Thanks! Sent from Samsung Mobile

12 years, 4 months

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Photos: 100 years of computing from punched cards to floppy disks

by lproven＠gmail.com

Summary: From punched cards to electromechanical machines - a look inside the IBM museum charting the rise of the company and computing. By Nick Heath | February 6, 2014 -- 15:29 GMT http://www.zdnet.com/photos-100-years-of-computing-from-punched-cards-to-fl… -- 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, 4 months

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VAX 8000 Console?

by michael.99.thompson＠gmail.com

> > From: Pontus Pihlgren <pontus at Update.UU.SE> > Date: Sat, 8 Feb 2014 08:46:33 +0100 > On Fri, Feb 07, 2014 at 02:55:41PM -0800, Zane Healy wrote: > > What kind of PDP-11's did VAX 8000's use as Consoles, and what > > did their console software consist of. > > > > That depends, models 8600 and 8650 used an 11/03 with RX > floppies (ours has an RL drive too). I'm not sure about the OS, > I bet it is RT11. > > The other models didn't have a front end AFAIK. > > /P > > The 8650 at the RICM has a T-11 PDP-11 chip on the L0201 CSL board. The BA11 chassis holds the Q-Bus for the CSL board and includes a M8061 RVL12 RL02 Disk Control for the RT11 boot disk. The 8600 Console Specifications Manual is here: http://manx.classiccmp.org/mirror/vt100.net/dec/ey-4818e-dx-0001.pdf -- Michael Thompson

12 years, 4 months

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MINC-11 Software

by aswood＠t-online.de

Hello all, I'm looking for MINC-11 software disk images - I found images for the miniminc only. Andreas

12 years, 4 months

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