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

by michael.99.thompson＠gmail.com

When I was debugging the TC59 mag tape controller on the PDP-9 I found that sometimes the READY signal from the TU20 would not go active. Yesterday the intermittent problem became permanent. The TU20 manual is on Bitsavers (Thanks to the LCM). The ~MOTION signal goes inactive when the tape is moving and goes active when the tape stops. That looks correct. The SETTLING DOWN signal should go active for 5ms, and then go inactive. The SETTLING DOWN signal is always active, so READY never goes active. I measured the voltage drop on all of the transistors and diodes on the R303 is slot A21. All of the measurements look OK. I am not really qualified to debug an R module to the component level, so a replacement module would be really helpful. Does anyone have an R303 flipchip that they would part with? -- Michael Thompson

12 years, 8 months

4
3
0 0

Joystick identification

by lproven＠gmail.com

I have acquired a Pericom Joystick 11, helping an acquaintance clear out his attic before he emigrated. It's an analogue joystick with a tiny red "fire" button on the tip of the stick, in a large, solid metal case. No other buttons. It has an attached coiled data cable with a 5-pin DIN plug on the end. I thought it was a BBC Micro analogue stick, something like a Bitstik: http://acorn.chriswhy.co.uk/8bit_Upgrades/Acorn_BitStik.html However, I've sold all 5 of my BBC Micros to Dave Moore of Replay Events - http://www.replayevents.com/ He's a bit of an Acorn expert and said this wasn't a BBC Micro device and it's not a BBC Micro connector. Wrong kind of DIN plug. On the label on the base, it says: Pericom Manufacturer of Micro Computers Graphic Terminals and VDUs Pericom PLC Rockingham Drive Linford Wood, Milton Keynes MK14 6LH Telephone (0908) 670000 Telex 826442 Model No. JOYSTICK 11 Ser. No. J. S. 774 In theory, you should be able to see a photo of it here: https://www.dropbox.com/s/ce2py6bjfvcrsqh/Pericom_joystick_11.jpg Anyone know what it is, what it's from or if it's of any interest to anyone? -- 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, 8 months

2
1
0 0

DEC Rainbow & Pro350 Software Available

by bobvines00＠gmail.com

Jeff Monasch has just found about 30 boxes of DEC Rainbow and Pro350 software while cleaning out his garage. Any takers? Email Jeff at jcm_temp at comcast.net Thanks, Bob

12 years, 8 months

2
1
0 0

More boxed printers

by witchy＠binarydinosaurs.co.uk

Folks, In addition to the LA400s I posted last week there's also at least a boxed LA75, 2 LA210s and other DEC printers. I don't want to see them binned. Anyone? -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

12 years, 8 months

2
1
0 0

CPT Phoenix Start, looking for docs and floppy to start from

by Bernhard.Wulf＠shell.com

Dear Classiccmp community, After a long time of searching on myself with only minimal results on the "CPT Phoenix Start" - system, I would like to tap the collective knowledge. The system (powersupply + mainbox (3.3"floppy) + keyboard (interesting shaped) + portrait full page screen) itself is fine, tries to boot, has a daisy-wheel printer and is only missing the 3.5" boot media. I have only the bare hardware and a couple of cables, assume it was used in professional word-processing. Appreciate any pointer. Mit freundlichen Gr??en, With kind Regards, Bernhard Wulf

12 years, 8 months

1
0
0 0

multibus boards

by aek＠bitsavers.org

just spotted this. i'm not currently looking but there seem to be a lot of multibus boards in this lot http://www.ebay.com/itm/310780731546

12 years, 8 months

1
0
0 0

FS: HP Integrity rx2620 / rx2600 / zx6000 PSU

by marcogb＠xs4all.nl

Just found that I have one (or maybe even more than one, need to double-check that) HP Integrity rx2620, rx2600, zx6000, etc. type (650-Watt) power supply unit left here. This may also work in equivalent HP 9000 (PA-RISC) systems, for all I know. Anyone interested? It's sort of in the way. (It's located in the Netherlands.) - MG

12 years, 8 months

1
0
0 0

pdp8 and pdp11 front panel keys available.

by roe＠liveblockauctions.com

I've had 10 dec # XX2247 front panel tubular keys machined from the original DEC code settings. These are not duplicates of an existing key, but freshly machined based on the actual key requirements, so they are suitable as master originals. They have all been tested in my pdp11/20 and work perfectly. These will fit pdp8 (classic), pdp8/e, 8/I, 8/L, 8/m, and the 8/L expansion box, as well as the pdp11/15, /20, /30, /45, /60 and /70; also fits the VAX 11/750. They will also work in the pdp 11/24 and 11/44, but are not really required; any ACE blank will work with these two machines. Price is $16 USD including postage in North America; I imagine postage to the EU and points east will be slightly more expensive. Available immediately.

12 years, 8 months

1
0
0 0

Working Atari Mega 4 ST for sale

by shawn-gordon＠cox.net

I have it on craigslist, but I have all the parts and a ton of software. Feel free to contact me directly. If it needs to be shipped, we'll have to figure that out. Thanks. http://orangecounty.craigslist.org/sys/4151372025.html

12 years, 8 months

1
0
0 0

Floppy drive head protector cardboard.

by me＠GarrettMeiers.com

Does anyone know of a source to purchase, in quantity, the cardboard head protectors for 5.25" floppy drives? Thanks, Garrett Meiers www.linkedin.com/in/theunixguy

12 years, 8 months

7
17
0 0

AW: Re: Nuclear Data ND600 system documents and schematics

by p.gebhardt＠ymail.com

Hello Richard, sorry I did forget to answer your mail. I contacted Al a few days ago before uploading the docs to the bitsavers ftp-server. He will put them online. Kind regards, Pierre ------------------------------ Richard schrieb am So., 27. Okt 2013 19:46 PDT: > >In article <1382506053.54989.YahooMailNeo at web133101.mail.ir2.yahoo.com>, > P Gebhardt <p.gebhardt at ymail.com> writes: > >> somebody asked for documentation about the ND600 system. > >That was me. I sent you a private email, but never heard back. If >you email the PDFs to me I'll get them onto bitsavers. >-- >"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, 8 months

1
0
0 0

S-100 80286 CPU board now running at 12 MHz.

by monahan＠vitasoft.org

More good news Guys. I now have our 80286 S-100 board running at 12 MHz (no wait states) with our 4MG Static RAM board. I noticed that my bus controller (U68) was a 82C288. Looking around here I found I had an 82C288-10. When I tried that, the board came up fine at 12MHz (no wait states). Clearly the CMOS clock generator while rated for 10MHz, works at a higher speed. The original 82C288 I think is for 8MHz, pushing it to 12 was too much. Fortunately I already have a 12Mhz clock generator (28C284-12) on board. Looking here:- http://www.cpu-world.com/CPUs/80286/MANUF-AMD.html I see there are PLCC 16MHz AMD chips. Does anybody know where to find these chips and the corresponding -16 clock generator and bus controllers. John From: n8vem-s100 at googlegroups.com [mailto:n8vem-s100 at googlegroups.com] On Behalf Of David Fry Sent: Saturday, October 26, 2013 1:22 PM To: n8vem-s100 at googlegroups.com Cc: cctalk at classiccmp.org; Andrew Lynch; monahan at vitasoft.org Subject: [N8VEM-S100:2006] Re: S-100 80286 CPU board write-up Hi John Excellent news :-) I was kinda holding off on starting my 80286 board in case the mods/fix ended up being extensive (I have the S-100 Ram/Rom board on order also) Just wondering if will you be investigating why the final board will only manage 11Mhz when the prototype manages 12Mhz ? It's not a big issue but would be nice to get to 12Mhz if possible. regards and thanks David Fry On Saturday, October 26, 2013 7:06:09 PM UTC+1, monahanz wrote: Good news, It now looks like our new 80286 Master/Slave S100 bus CPU board works fine with not only our 4MG Static RAM board bit also the 1M RAM/ROM board. The problem I outlined below was due to the fact that I had jumpers wrong on both the CPU and ROM/RAM boards. The 80286 works fine with both boards at 11MHz (with no wait states). One of the reasons for "upgrading" the ROM/RAM board was to simplify the "rats nest" of jumpers on the earlier boards for the diverse range of RAM & RAM chips (including flash RAM) that board can use. The new RAM/ROM boards should be here soon. If you have the older board, consider switching over (it uses all the same chips/parts) . For new users it is a very useful memory board. One remaining bug I see with the 80286 board is that some older S100 Static RAM boards (particularly those that use PALs, such as the Godbout 128K static "RAM21" board or the BG Computers 256K Static RAM board), need a patch. You need to bend out pin 2 of U56 and jumper it to pin 9 of U68 - the bus controller. This seems to provide the early MWRITE status signal these boards require. Interestingly this is also the case for our 8088 CPU board (jumper K5,2-3), but not the 8086 board. I have written up a detailed account for the 80286 boards construction here:- http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2 0Board.htm And a description of the RAM/ROM board here. http://www.s100computers.com/My%20System%20Pages/RAM <http://www.s100computers.com/My%20System%20Pages/RAM&ROM%20Board/RAM&PROM%2 0Board.htm> &ROM%20Board/RAM&PROM%20Board.htm Enjoy John From: John Monahan [mailto:mon... at vitasoft.org <javascript:> ] Sent: Sunday, October 20, 2013 10:53 AM To: 'n8vem... at googlegroups.com <javascript:> ' Cc: 'cct... at classiccmp.org <javascript:> '; Andrew Lynch (andrew... at sbcglobal.net <javascript:> ) Subject: S-100 80286 CPU board write-up Hi everybody. I have just written up construction notes on this 80286 CPU board. Please see here:- for details:- http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2 0Board.htm Unfortunately there are some strange issues with the board running with RAM boards other than our 4MG Static RAM board (described here:-) http://www.s100computers.com/My%20System%20Pages/RAM%20Board/4MG%20RAM%20Boa rd.htm With that RAM board, the 80286 is rock solid at 11MHz (no I/O or ROM wait states required). Please see the bottom of the page for details. I am traveling all of next week but will explore further when I get back. Sorry about the bad news John -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to n8vem-s100+unsubscribe at googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.

12 years, 8 months

3
3
0 0

Nuclear Data ND600 system documents and schematics

by p.gebhardt＠ymail.com

Hello list, somebody asked for documentation about the ND600 system. Finally, I found some time to scan all docs I have about it. They're available as PDFs. Contact me off-list to get them. Alternatively, the docs could be put online on bitsavers, if Al would be fine with it and finds the time to do so. Kind regards, Pierre ? ------------------------------------------------------------------------------- Pierre's collection of classic computers : http://classic-computing.dyndns.org/

12 years, 8 months

2
1
0 0

My Acorn A4000 on You Tube

by terry＠webweavers.co.nz

It's been a long time between drinks, but finally a video on my Acorn A4000. http://youtu.be/_iodsz5LPio

12 years, 8 months

1
0
0 0

Manchester UK - Friday 1st December

by dave.g4ugm＠gmail.com

I Know I should have Classic in there as well... http://www.meetup.com/Manchester-Vintage-and-Retro-Computing/ but I don't, but if you are in the area come along any way... Dave

12 years, 8 months

1
0
0 0

Netcom system with an HV-1148 backplane

by jhfinedp3k＠compsys.to

>azd30 wrote: >Hi, > >I recently aquired an old Netcom system and I'd like to find out a bit more info about this backplane. >It's an 11/23 system (based on CPU) . It has some standard DEC >cards in it (M8186 CPU, DLV11, BDV11 bootstrap board ) as well as a thrid party 256Kb memory board and an MXV22 floppy controller. >Apparently the system ran RT-11 from floppies a few years back before it was put in storage. > > If you can specify all the boards (or at least the DEC boards) by their board number (i.e. M8186), it would be more useful. Is the DLV11 an M8043 (actually DLV11-J)? Just in Case, please also mention dual or quad board. >I have read through the PUPS archives, esp. a post from Michael Sokolov back in 98, where he describes >the different types of QBus'es. Q/Q, Q/CD etc. Have also read through the info on hampage.hu and various other sites that host PDP11 related info, >but am still unsure about this particular beast. > >It looks like the backplane that I have (according to the archives and some documents written at SLAC in late 70's) >is a serpentine or sinusoidal type configuration. The SLAC documents actually refer to the Netcom backplane but they >describe it a simple serpentine type. > >A diagram on my cardcage describes it as follows: > >A B C D >------------> ><----------- >-------------> ><------------ > >There is also a blurb about slot 2/CD being wired differently. Two slots on the diagram are pre-printed for RL controllers. I can't rembeber the exact wording, since I don't have the computer in front of me. > > This is possible, but seems VERY unlikely with just a 4 slot backplane. As far as I understand, in order to be useful to support an RL controller, at least 2 slots must be wired as ABCD. The BA23 box has the first three slots as ABCD and the other five slots as ABAB, so the concept is possible. Having two ABCD slots also supports PMI memory with the memory being placed in slot 1 and the CPU in slot 2, but that requires at least a quad M8190 CPU card. >It gather that I insert the CPU in 1AB, then rather than putting the next card in 2AB, I would place it in 1CD. Next would be 2CD and so on ,snaking down the line. Is this correct? While this is all fine for dual cards, but how does this configuration >handle quad cards? I'm guessing that it has to do something with that 'blurb', but that would mean that I can only have one quad card installed, and it would be right towards the begining of the bus. The BDV11 should >be the last card in the chain from what I can remember. > > I forgot to add, please also specify where all the current cards are located in the back plane. With an M8186 to start, the BDAL17-20 lines should be either unconnected (for an 18 bit backplane) or ONLY connected to each other (for a 22 bit backplane). If they are unconnected, installing connections should convert to a 22 bit backplane and you M8186 should be able to access as much memory as you are able to place in the backplane (up to 4 MB of course). At one point, a VT103 backplane was upgraded to 22 bits and a 4 MB memory board installed. >Also, my CPU card is a rev. D so it can do 22bit addressing. I'd like (if possible) to run 22bits, since this would allow >me at a later time to put in a 11/73 cpu that would give me more flexibility in what OS's i can install on the machine. > >I'll have to check if the backplane is wired for 22bits or not. I seem to remeber the standard qbuses had the W1-W4 pins (?) >that you could wirewrap to change from 18to22 (i'm assuming that this operation propagated the BDAL17-20 from slot 1 to the other slots) but this backplane has nothing like that. >I'm planning on checking it with an ohmmeter, and it should be very obvious if these signals are present across slots. > >The backplane is a PCB style, but it does have std. wire wrap pins sticking out from the PCB. If the BDAL17-20's are not present across slots, can I just simply extend them thru by wirewrapping? > > Probably. For the VT103, there were no pins, just the solder bumps. That was sufficient to attach the required wires. Note that all of the ABs must be connected, not just the ABs on the left side of the backplane. For the VT103 with a 4 slot ABAB backplane, that meant eight connections per each of the four wires to connect the BDAL17-20 together (each to themselves of course). >If anyone can shed any light on this backplane, it would be greatly appreciated. > >thanks in advance for any replies. > >-- >alex > If you have any more questions and you answer the questions, it may be possible to help some more. Jerome Fine

12 years, 8 months

6
11
0 0

Original Boxes

by nf6x＠nf6x.net

Some of the items I've acquired lately have come in original boxes: * Tandy Color Computer 3 * Tandy CM-8 Monitor for Color Computer 3 * Tandy CCR-81 Cassette Recorder * Star Micronics Gemini 10X Printer * Kensington System Saver for Apple IIe * HP 82240B IR Printer (for HP 48 calculator family) Most of the boxes aren't in great shape, box collecting doesn't interest me, and I don't want them taking up my space. Is anybody interested in any of them before I throw them out? I'm in southern California, so they could be picked up near Riverside (weekends) or Irvine (weekdays) if desired. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

12 years, 8 months

1
0
0 0

XT-IDE V2 assembled and tested on eBay

by LYNCHAJ＠YAHOO.COM

271307159883 Thanks! Andrew Lynch

12 years, 8 months

1
0
0 0

HP IIISi "55 SERVICE"?

by mouse＠Rodents-Montreal.ORG

I have an HP IIISi printer. It was working fine. Then it sat idle for quite a while (some small number of years, I think); then it was moved (the movers picked it, and a bunch of other stuff, up and held it for a few months before bringing it to the new place). Now, the printer doesn't work. I turn it on and the front panel does a brief lamp-test (each lamp in turn turns on briefly), the display says "05 SELF TEST", then "SWITCHING TO PS", then "55 SERVICE" with the 55 flashing. I did a little noodling around and found hints that this indicates some kind of internal communication failure - and, indeed, I don't hear the brief motor-and-solenoid noises that (admittedly hazy) memory says normally accompany selftest; after the clunk of the power switch as I turn it on, the next sound is the clunk of the power switch as I turn it off in exasperation at seeing "55 SERVICE" again. (It's possible there are fan noises, but there are enough fans in the room that it would be had to tell unless they're fairly noisy fans.) I found a PDF on www.lbrty.com which purports to be a IIISi/4Si manual, probably a service manual from the context and the "sm" in the filename. But every page just gives me "**** ERROR: Unable to process JPXDecode data. Page will be missing data." and an empty page. I am looking into other possible ways to get its content, but, in the meantime, does anyone have anything to suggest? I'm not afraid of voltmeters and soldering irons, but my test equipment is limited - I don't, for example, have a 'scope or logic analyzer I can use here. I do have a pretty good multimeter - a Fluke 87 - though. I took the printer apart to some degree. I've had it apart before; there was a power filtering cap that went and arced enough to eat away some of the PC board under it. I cleaned it up and replaced it and it's worked fine ever since...until now. Any thoughts, anyone? /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mouse at rodents-montreal.org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

12 years, 8 months

2
2
0 0

Original Mac numeric keypad & Mac Plus keyboard for sale

by lproven＠gmail.com

The gradual garage clearance continues. Mac Plus keyboard (with integral numeric keypad, no cable) http://www.ebay.co.uk/itm/271305613659 Original Macintosh numeric keypad http://www.ebay.co.uk/itm/271305622663 No packaging or anything, I'm afraid. They could do with a good clean, as well. Posted because Jules just recently mentioned that he was looking for one. I've put them up with a starting bid of a tenner. I hope that does not seem too much like price-gouging, but I was not willing to go for my usual 1p approach with some genuine rare (not "ebay rare") kit. Apologies for the spam! -- 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, 8 months

2
1
0 0

Help me identifying this

by supervinx＠libero.it

Hi ! I came across this photo, but can't identify it... http://www.supervinx.com/temp/IBM.JPG What's missing in the upper slot? Thanks! -- Retromuseum: http://www.supervinx.com/Retrocomputer You can reach me at: http://www.youtube.com/supervinx http://www.myspace.com/supervinx http://www.facebook.com/supervinx

12 years, 8 months

3
2
0 0

Collection reduction (update 1)

by jhfinedp3k＠compsys.to

>Mark Martin wrote: >>On Sat, Oct 19, 2013 at 8:48 PM, Kevin Schoedel <schoedel at kw.igs.net> wrote: > >>I think I have removed everything that is gone or firmly spoken for (let me >>know if I've missed something). Some items have pending expressions of >>interest. >> >[Long list of stuff omitted] > >If anyone is making a trip from Chicagoland or nearby major cities, will >you please contact me off list. I'd like to see if we can make arrangements >for a joint shopping trip or purchase. Thanks in advance. > >Regards, >Mark > I have also been in touch with Kevin, but he has not sent me an update. However, if I do get there, I am coming from the opposite direction - >from Toronto. It would be appreciated if you could advise me as to which items, if any, you have arranged to pick up from Kevin so that I might determine what may be still available. Jerome Fine

12 years, 8 months

4
4
0 0

Asteriods arcade cabinet

by tpresence＠hotmail.com

Maybe this isn't the perfect match in context for the list, but I'm guessing its as good as any. I've had a classic asteroids arcade cabinet since I was about 16 (1985). We ran it off and on for a few decades, and then it sat in the garage for a while. Last time I turned it on, the vector screen initially displayed only a center dot, then a line, then the full screen after a while of being on. I wan't to bring it back up again. What precautions or efforts should I take to get the machine back up? I don't want to damage it. The only repair made so far was a replacement of the lit player 2 button. Kevin

12 years, 8 months

3
3
0 0

Anyone have any info on a Bendix 3001 terminal?

by ethan.dicks＠gmail.com

Hi, folks, I did some preliminary googling and didn't find any obvious hits for this terminal. It has a metal shell, blue textured paint, a couple of switches on the back for features, a DB25, and the older type of modular power plug often seen on instruments - the short recessed oval with 3 pins. I plan to dust it off, check for loose things, then examine the PSU before even thinking of powering it on. If I had to guess, and I do, I'd expect it to be a glass TTY no smarter, and probably a lot dumber than an ADM3. Anyone have any facts about it? I'll know more when I get a chance to open it and clean it, but I thought I'd ask. Thanks! -ethan

12 years, 8 months

2
3
0 0

S-100 80286 CPU board write-up

by monahan＠vitasoft.org

Good news, It now looks like our new 80286 Master/Slave S100 bus CPU board works fine with not only our 4MG Static RAM board bit also the 1M RAM/ROM board. The problem I outlined below was due to the fact that I had jumpers wrong on both the CPU and ROM/RAM boards. The 80286 works fine with both boards at 11MHz (with no wait states). One of the reasons for "upgrading" the ROM/RAM board was to simplify the "rats nest" of jumpers on the earlier boards for the diverse range of RAM & RAM chips (including flash RAM) that board can use. The new RAM/ROM boards should be here soon. If you have the older board, consider switching over (it uses all the same chips/parts) . For new users it is a very useful memory board. One remaining bug I see with the 80286 board is that some older S100 Static RAM boards (particularly those that use PALs, such as the Godbout 128K static "RAM21" board or the BG Computers 256K Static RAM board), need a patch. You need to bend out pin 2 of U56 and jumper it to pin 9 of U68 - the bus controller. This seems to provide the early MWRITE status signal these boards require. Interestingly this is also the case for our 8088 CPU board (jumper K5,2-3), but not the 8086 board. I have written up a detailed account for the 80286 boards construction here:- http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2 0Board.htm And a description of the RAM/ROM board here. http://www.s100computers.com/My%20System%20Pages/RAM <http://www.s100computers.com/My%20System%20Pages/RAM&ROM%20Board/RAM&PROM%2 0Board.htm> &ROM%20Board/RAM&PROM%20Board.htm Enjoy John From: John Monahan [mailto:monahan at vitasoft.org] Sent: Sunday, October 20, 2013 10:53 AM To: 'n8vem-s100 at googlegroups.com' Cc: 'cctalk at classiccmp.org'; Andrew Lynch (andrew-lynch at sbcglobal.net) Subject: S-100 80286 CPU board write-up Hi everybody. I have just written up construction notes on this 80286 CPU board. Please see here:- for details:- http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2 0Board.htm Unfortunately there are some strange issues with the board running with RAM boards other than our 4MG Static RAM board (described here:-) http://www.s100computers.com/My%20System%20Pages/RAM%20Board/4MG%20RAM%20Boa rd.htm With that RAM board, the 80286 is rock solid at 11MHz (no I/O or ROM wait states required). Please see the bottom of the page for details. I am traveling all of next week but will explore further when I get back. Sorry about the bad news John

12 years, 8 months

2
2
0 0

HP 95 (?) Serial Cable - Free for Cost of Shipping

by robert.jarratt＠ntlworld.com

I have a cable which I *believe* is for a HP 95. It has a DE-9 female connector on one end and some proprietary looking connector on the other side, which seems to have 4 pins and is also female. If anyone wants a photo I can arrange to take one and send it to you. If anyone wants it they can have it for free as long as they pay the cost of shipping. I am in Manchester (UK). Regards Rob

12 years, 8 months

2
1
0 0

MicroAce Documentation archived?

by bob099＠centurytel.net

http://www.jupiter-ace.co.uk/index.html

12 years, 8 months

1
0
0 0

MicroAce Documentation archived?

by derschjo＠gmail.com

Have the user / assembly manuals for the MicroAce (unlicensed Sinclair ZX80 clone) been archived anywhere? I did a quick search and I didn't find anything. If not, is anyone chomping at the bit to have it archived? I just picked up an interesting set of hardware that I thought was a Sinclair ZX80 plus an empty MicroAce case, but which turns out to be a MicroAce Issue 1 PCB installed in a Z80 case (with ZX80 keyboard overlay fitted, plus the 8K ROM upgrade overlay taped on top). Came in the original MicroAce box with documentation, sales receipt and a photocopy of "MicroAce / ZX80 Video Secrets Revealed!" (which I also don't see archived anywhere) If this isn't archived anywhere, I'll see what I can do to get this scanned at some point. Also -- as an aside, I'm faced with a dilemma: do I restore this thing back to a MicroAce, or leave it as the frankenstein it is? I have the original MicroAce overlay (never used -- still has the protective backing on the sticky side) but it's pretty clear that whoever put this together assembled it as a ZX80 from day one, for some reason. The MicroAce is considerably more rare than the ZX80 (which is already pretty uncommon)... but then again it works fine as is. (Really the only irreversable step here would be peeling off the ZX80 overlay and sticking the MicroAce one on.) - Josh

12 years, 8 months

2
2
0 0

Collection reduction (update 1)

by storycrafter＠gmail.com

On Sat, Oct 19, 2013 at 8:48 PM, Kevin Schoedel <schoedel at kw.igs.net> wrote: > I think I have removed everything that is gone or firmly spoken for (let me > know if I've missed something). Some items have pending expressions of > interest. > [Long list of stuff omitted] If anyone is making a trip from Chicagoland or nearby major cities, will you please contact me off list. I'd like to see if we can make arrangements for a joint shopping trip or purchase. Thanks in advance. Regards, Mark

12 years, 8 months

2
2
0 0

DECbrouter Fan

by robert.jarratt＠ntlworld.com

The DECbrouter I got recently has a little fan attached to the side. This prevents me putting the DECbrouter into a DEChub because the fan assembly fouls the metallic leaves on the DEChub. It seems that the DECbrouter is designed to allow use with a DEChub, but in my case it won't fit. Is there a different DEChub that does not have the metallic leaves at one end of each slot? How critical is the extra fan? The fan is pretty small and I could remove the extra fan assembly. Regards Rob

12 years, 8 months

1
0
0 0

Collection reduction (update 1)

by dm561＠torfree.net

----- Original Message ----- > Date: Fri, 25 Oct 2013 07:01:16 -0400 > From: "Jerome H. Fine" <jhfinedp3k at compsys.to> > > >Mark Martin wrote: >> >>If anyone is making a trip from Chicagoland or nearby major cities, will >>you please contact me off list. I'd like to see if we can make >>arrangements >>for a joint shopping trip or purchase. Thanks in advance. >> >>Regards, >>Mark @Mark: AFAIK at least two people from Chicagoland are either coming up or have made arrangements; hope you can get together. > I have also been in touch with Kevin, but he has not sent me an update. > > However, if I do get there, I am coming from the opposite direction - > from Toronto. > > Jerome Fine > Hi Jerome, (haven't seen you in many years; how are ya!) As Kevin himself said, it's quite a job inventorying his treasures and staying on top of what's been taken and what's spoken for and by whom, so be patient ;-) I picked up a few items last week but will probably be going back for a few more, so if you make arrangements with Kevin for anything I'd be happy to pick it up and bring it back for you if it's not too large (but then you'd miss the tour ;-) mike

12 years, 8 months

1
0
0 0

Zombie Mac Plus

by lproven＠gmail.com

I decided to take my life and my capacitors in my hands and try to power on the somewhat grubby old Mac+ I was given recently. I hooked up a keyboard and mouse and plugged it in. The floppy drive makes a very short whine, the Mac emits a fairly basic monophonic happy-Mac beep, and sits there humming quietly at me. However, the screen does not light up. It /sounds/ like the logic board is initialising OK but the screen isn't. Is there much troubleshooting that someone fairly electronically incompetent can do to one of these? -- 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, 8 months

8
16
0 0

Wanted: BA23 slide rack kit

by pontus＠Update.UU.SE

Hi I'm looking for a way to rackmount my BA23 (and BA11) boxes in my H960 rack. Most modern solutions is rather unsatisfactory (some doesn't fit, others are crazy expensive). So, does anyone have a stack of these: http://www.employees.org/~kirk/images/ba23ltslide.jpg Hopefully in Europe, but shipping from USA might be worth it. I need about six pairs. Regards, Pontus.

12 years, 8 months

4
6
0 0

very cheap old memory

by sales＠elecplus.com

I don't know this company, but I came across this page, and it is the cheapest I have ever seen for this old memory! http://memorydealers.com/memory.html?cat=2670 Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4158 / Virus Database: 3614/6776 - Release Date: 10/23/13

12 years, 8 months

3
2
0 0

scrap

by useddec＠gmail.com

Hi Guy, Any news on the H960's and whatnot? Thanks, Paul

12 years, 8 months

1
0
0 0

Netcom system with an HV-1148 backplane

by azd30＠telus.net

Hi, I recently aquired an old Netcom system and I'd like to find out a bit more info about this backplane. It's an 11/23 system (based on CPU) . It has some standard DEC cards in it (M8186 CPU, DLV11, BDV11 bootstrap board ) as well as a thrid party 256Kb memory board and an MXV22 floppy controller. Apparently the system ran RT-11 from floppies a few years back before it was put in storage. I have read through the PUPS archives, esp. a post from Michael Sokolov back in 98, where he describes the different types of QBus'es. Q/Q, Q/CD etc. Have also read through the info on hampage.hu and various other sites that host PDP11 related info, but am still unsure about this particular beast. It looks like the backplane that I have (according to the archives and some documents written at SLAC in late 70's) is a serpentine or sinusoidal type configuration. The SLAC documents actually refer to the Netcom backplane but they describe it a simple serpentine type. A diagram on my cardcage describes it as follows: A B C D ------------> <----------- -------------> <------------ There is also a blurb about slot 2/CD being wired differently. Two slots on the diagram are pre-printed for RL controllers. I can't rembeber the exact wording, since I don't have the computer in front of me. It gather that I insert the CPU in 1AB, then rather than putting the next card in 2AB, I would place it in 1CD. Next would be 2CD and so on ,snaking down the line. Is this correct? While this is all fine for dual cards, but how does this configuration handle quad cards? I'm guessing that it has to do something with that 'blurb', but that would mean that I can only have one quad card installed, and it would be right towards the begining of the bus. The BDV11 should be the last card in the chain from what I can remember. Also, my CPU card is a rev. D so it can do 22bit addressing. I'd like (if possible) to run 22bits, since this would allow me at a later time to put in a 11/73 cpu that would give me more flexibility in what OS's i can install on the machine. I'll have to check if the backplane is wired for 22bits or not. I seem to remeber the standard qbuses had the W1-W4 pins (?) that you could wirewrap to change from 18to22 (i'm assuming that this operation propagated the BDAL17-20 from slot 1 to the other slots) but this backplane has nothing like that. I'm planning on checking it with an ohmmeter, and it should be very obvious if these signals are present across slots. The backplane is a PCB style, but it does have std. wire wrap pins sticking out from the PCB. If the BDAL17-20's are not present across slots, can I just simply extend them thru by wirewrapping? If anyone can shed any light on this backplane, it would be greatly appreciated. thanks in advance for any replies. -- alex

12 years, 8 months

1
0
0 0

Yet another collection reduction: UK

by colineby＠isallthat.com

All, Following the recent trend of repentant hoarders, it's time for me to slim the herd. In particular I need to recover the use of my second bedroom. So I need to find happy homes for the following: IBM System/36 5362 (US Model) IBM System/36 5363 IBM AS/400 9404 (CISC) IBM RS/6000 7025-F40 IBM RS/6000 7015-98B IBM RS/6000 7015-999 IBM RS/6000 43p (several) HP Apollo 9000 Model 400 (68040 upgrade) I may also have a number of smaller Sun, HP and IBM UNIX boxer available. None of these machines have been run for between 10-15 years. They may require attention, which since I've not touched them in quite some time. Better they go to you, eh? These would all be for pickup in the from post code GU51 2UD. I'm not looking for any financial exchange, but I would direct you to donate generously to The National Museum of Computing (www.tnmoc.org). Regards, Colin

12 years, 8 months

11
22
0 0

Compaq CGA card, schematics?

by phil＠viscom.net

All,? I have a Compaq Portable ("luggable"), revived from damp storage, and I'm trying to work through some of the troubles it has. First one I'm trying to sort involves the video card. It has the original CGA card in, with the internal output hooked to the internal screen. It has a DB-9 connector for an external C/EGA screen and also NTSC composite output on an RCA plug. I've not been able to test the external 9-pin because I don't have a screen, but I'm going to guess it's working because the internal screen display is good. The composite out is terrible. On several television sets it jumps, losing horizontal sync. The image supposed to be on screen is legible, just. Anyone have experience with this issue (a particular cap, a chip particularly prone to failure) or the schematics for the board? It's tough to trace, being a 3 layer sandwich. If anyone has the schematic for the vdu driver board also, I need to work on that too, it's suffering from dry capacitors. Thanks Phil Andrews Sent from my Samsung Galaxy S?4

12 years, 8 months

2
1
0 0

Lookin' for #6335 or #6365 Internal/External AS/400 P03 portable QIC 1/4" Tape cartridge

by supervinx＠libero.it

Whew... I have a P03 and can't find a suitable tape drive to connect to :( Tried lot of drives, internal or external, but none of them was recognized... Does someone have a spare unit? Thanks! -- Retromuseum: http://www.supervinx.com/Retrocomputer You can reach me at: http://www.youtube.com/supervinx http://www.myspace.com/supervinx http://www.facebook.com/supervinx

12 years, 8 months

3
8
0 0

Data Translation DT2766 manual?

by brad＠heeltoe.com

Hi, Anyone have a Data Translation DT2766 manual? It's a qbus 4 channel DAC card. I googled everything I could think of and can't find a thing. I could use a pdf (or the real thing, which ever works). I'd be happy to scan a physical copy and return it. thanks! -brad

12 years, 8 months

3
2
0 0

HP-HIL Technical Reference

by aek＠bitsavers.org

FYI http://bitsavers.trailing-edge.com/pdf/hp/hp-hil/45918A-90001_HP-HIL_Techni…

12 years, 8 months

3
2
0 0

360-20 core

by BHuntsman＠mail2.cu-portland.edu

Ok, time for a reality/price check folks. What do you all think a whole core assembly, new, for an IBM 360 Model 20 would be worth? Thanks! -Ben

12 years, 8 months

3
6
0 0

Really old IBM gear

by BHuntsman＠mail2.cu-portland.edu

I see all sorts of stuff for collecting/trading around here, but not a lot of IBM equipment. Anyone do much hobbying of IBM stuff, especially S/360, S/370, and S/390? Anyone know where I could find some interesting artifacts, like a 1052? Or other similar-vintage stuff? Thanks in advance! -Ben

12 years, 8 months

7
10
0 0

old Macs needed for photo shoot

by sales＠elecplus.com

I have a gent needs old Mac LCII, 1994 or older, complete and working with color monitor, kbd, mouse, etc. They also use Mac SE and other old Macs. If you have some available for sale, please contact me. Needed in Atlanta, GA area. Need to NOT be discolored. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4158 / Virus Database: 3614/6774 - Release Date: 10/23/13

12 years, 8 months

1
0
0 0

Porn

by wdonzelli＠gmail.com

Porn. https://www.youtube.com/watch?v=wKslgJnQgG8 That is all. -- Will

12 years, 8 months

14
17
0 0

VMS Administration as a modern career (was Re: free VAX 4000 VLC)

by jgessling＠yahoo.com

I was working as a VMS administrator up until 2 years ago.? The healthcare business still has some VMS systems in use today.? The one I took care of ran the GE software for a well known physicians group in San Francisco.? We called it IDX but it had been through many names as GE tried to make it seem modern.? Based on one of the MUMPS variants.? A horrible mess that was susceptible to unexplained problems at any moment.? Very expensive to run since GE charged a lot for support and it needed a lot of it.??? Two years ago, the whole IT departement got outsourced and the overseas staff, India, was supposed to take over.? After a couple months of that I quit in disgust.? I do know one guy still doing VMS at an HMO in Sacramento.? That'll go on for a couple more years.? My Alpha XP900 is sitting unused in my garage.

12 years, 8 months

8
10
0 0

Data Translation DT2766 manual? (Brad Parker) (cctalk Digest, Vol 122, Issue 31)

by johnwallace4＠yahoo.co.uk

> Message: 13 > Date: Tue, 22 Oct 2013 08:28:55 -0400 > From: Brad Parker <brad at heeltoe.com> > To: cctalk at classiccmp.org > Subject: Data Translation DT2766 manual? > Message-ID: <52666F87.7050403 at heeltoe.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > Hi, > Anyone have a Data Translation DT2766 manual?? It's a > qbus 4 channel DAC > card. > I googled everything I could think of and can't find a > thing.? I could > use a pdf (or the real thing, which ever works).? I'd > be happy to scan a > physical copy and return it. > thanks! > -brad While you wait for proper info... apologies if you've already considered and rejected this, or if it's a silly idea... Were you after software or hardware info or both? Either way... I don't know the DT2766 itself, but I found a DT2766 picture that looked like 4 simple D2As on a card. Based on that, and on what I remember from a few decades ago, have you looked around for DEC documentation on the AAV11C? There ought to be some in various realtime-related documents which with luck would be available on Bitsavers and elsewhere, but I couldn't quickly find anything useful just now. The AAV11C was a simple PIO dual height Qbus 4channel DAC card (and before it, there was the AAV11A quad height card). If you're lucky you *might* get a pleasant surprise from the AAV11C. Or it might be completely different >from a DT2766, in which case, apologies. My hardcopy of DEC's 1985 Microcomputer Products Handbook has five pages on the AAV11C in chapter 33, covering addressing, configuration, but not connector pinout. Chapter 33 references the LSI11 Analog System Users Guide, an AAV11C Field Maintenance Print Set, and the AAV11 Diagnostic Documentation Kit. Manx says the Analog System Users Guide isn't online, didn't check the others.. There was also an AAV11D which really was a rather different beast, with upmarket features like DMA. Best of luck John Wallace

12 years, 8 months

1
1
0 0

Attack of Wabash

by rescue＠hawkmountain.net

As folks may have read about my recent VT103 rescue.... Well, regarding the disks I want to end up imaging.... the 4 disk set of RT is on Wabash diskettes ! (All the other 8" diskettes are almost all Digital brand, but those 4 are Wabash). The oxide looks ok, but a scuff near the hub area with my fingernail was able to remove a tiny amount of material... I think when I get to imaging those 4 I'm only going to have a shot or two each. Any suggestion (besides toss the 4 diskettes right after imaging them) ? Also, anyone know if the 8" drives in the RX02 itself use a standard interface at all that could be connected to something like a Kryoflux ? -- Curt

12 years, 8 months

4
9
0 0

A new Mark8 is born...

by cube1＠charter.net

FYI, a new Mark 8 now exists - mine. I built it using wire wrap on 0.10 inch perf-board, with point to point wiring for power. I used 0.10 Molex sockets with standard header pins for a motherboard (they are not as long and sturdy as one might like, but, oh well). Works fine. In the process, I captured the schematics with KiCAD, and then routed some PCB boards. Some of the PCB boards have been manufactured, and are awaiting construction. The others have been ordered. Also, in the process, I am testing a concept of replacing the Signetics 8263 and 8267 chips with programmed GALs (I had enough real ones to build my prototype and build out my PCBs). You might be able to see them in my Facebook album, I think, though my Facebook page is generally not publicly viewable. Try these links: Mark 8 (my wire wrap "prototype"): https://www.facebook.com/media/set/?set=a.562945557100074.1073741829.100001… PCBs: https://www.facebook.com/media/set/?set=a.562952890432674.1073741830.100001… BTW, is there any interest out there in: 1) Sets of PCBS? (They would be around $500 per set, I guess - I would not WANT to make and sell them in any quantity!). 2) GALs on little boards to substitute for the 8263/8267? JRJ

12 years, 8 months

4
10
0 0

VMS Administration as a modern career (was Re: free VAX 4000 VLC)

by jgessling＠yahoo.com

Jeez you guys.? I was just stating my own personal experience.? Not wanting to startup a whole folderall about how VMS has been treated by the various parties involved.? If I wanted that I could just go and look at comp.os.vms, where you can review the whole history of DEC/Compaq/HP and VMS.? Let's not replay it all again.? Please.

12 years, 8 months

3
2
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb