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

by hp-fix＠xs4all.nl

I got some JM38510/052528CB ic's and want like to know what type it is. Tried the usual places but can't find the number, someone who can help? -Rik

11 years, 3 months

1
0
0 0

Looking for BASIC-80 for Intellec MDS-2

by fulivi＠tiscali.it

Hi, is there someone who can send me the executable/floppy image of BASIC-80 for ISIS-II operating system, please? I've a few old BASIC programs that I'd like to try on the MESS-based MDS-2 emulator. Thanks a lot! -- F.Ulivi

11 years, 3 months

4
5
0 0

Need Corvus 'A2CPM.1' diskette

by snhirsch＠gmail.com

Hi, I'm trying to setup Apple CP/M on a Corvus Constellation II network drive. This requires a support diskette labeled 'A2CPM.1' that I'm unable to find anywhere. It is most likely in Apple Pascal format and contains a file named 'A2.DRVR.CPM.221' (along with several others). I'm reasonably sure that the Pascal volume name will be 'A2CPM.1:', or perhaps just 'A2CPM:'. (It is also possible that there are additional A2CPM.2 or .3 diskettes) NOTE: There are (2) Corvus diskette images floating around the web under various names that are NOT the correct ones (they're for an older version of the Constellation software): 1. Apple Pascal format, volume name 'CSCPM:' 2. Apple CP/M format with BIOS source and a few utilities Again, neither of these is the correct one. I can handle any type of Apple image file format. Would greatly appreciate it if someone has these elusive items. Steve --

11 years, 3 months

3
5
0 0

PDP-8 ceremony video from VCF East last month

by evan＠snarc.net

Quick-and-dirty edit .... enjoy! https://www.youtube.com/watch?v=JM38IVT8zHc

11 years, 3 months

2
2
0 0

old control data drives

by PLauridsen＠wm.com

I have three old control data 604 drives is there interest in them, I hate to just throw them away Let me know Peder Lauridsen ---------------------------------------------------------------------- Recycling is a good thing. Please recycle any printed emails.

11 years, 3 months

5
5
0 0

HP 1331A X-Y display service

by jules.richardson99＠gmail.com

Anyone happen to have a service manual for an HP 1331A X-Y display? I've got a complete wreck of one here rescued from a scrap pile which is arcing somewhere between the tube and the shielding - I expect that nothing can be done for it, but if I can work out how to pull the tube (short of a complete disassembly, but HP of that era were usually smarter than that) then I can clean it up and better assess things. cheers Jules

11 years, 3 months

1
0
0 0

FREE: Working Victor 9000 in Denver, CO

by tosteve＠yahoo.com

Don from Denver writes, contact him for more info:================================================== Anyone know of a way for me to donate a working Victor 9000 before I take it to an electronics recycler? Don, huberdon at aol.com ??? ==================================================

11 years, 3 months

1
0
0 0

Sun SparcStation 4 - Need Help to Hook up cables, & Docs

by computerdoc＠sc.rr.com

Hi Guys, I obtained a Sun SparcStation 4 at the CoCoFEST for which I need some information on the proper hook up of the cables. The SCSI cables I can guess, but the PS/2 cables I'm not so sure of. There is one PS/2 connector on the back of the Monitor labeled A/B and on the SparcStstion itself is a DB25 pin connector labeled Serial A/B. Do these connect together? One PS/2 connector exists on the Sparcstation so how does both the PS/2 connector on the Keyboard and the mouse connect to the SparcStation? Also I understand that it is password protected so I need the "Super-secret" procedure to remove the password. I was told this is possible. Documentation in any form is quite necessary as well. Any leads as to where to obtain these as well? I haven't looked at sun.com yet, but I most certainly will. Your help is most appreciated. Thank you in advance for any help you can give. Take care my friends. Kip Koon <mailto:computerdoc at sc.rr.com> computerdoc at sc.rr.com <http://www.cocopedia.com/wiki/index.php/Kip_Koon> http://www.cocopedia.com/wiki/index.php/Kip_Koon

11 years, 3 months

7
8
0 0

360/50 microcode listing

by COURYHOUSE＠aol.com

Comments on where the 360s went... When I was in the used computer business in the early 80s when gold and silver did the big climb there arose a large group of people aside from the usual scrappers, that were going about the nation specifically targeting old 360s and earlier for scrap. Even the scrappers that did not break the entire computers down and process them would sell countess containers of early computers to the Taiwanese metal brokers that would come over here to purchase material. yes..... shiploads of containers... The younger people here and those that were not in the biz back then do not realize how many truck load after truck load were scrapped. Knowing some of the scrappers was a good deal for me as a Computer dealer though as a small PDP-8 or the likes did not have enough tonnage to interest them and sometimes they would just let me have them gratis. Hate to say how may HP 2116, 2114, and 2115 hit the process especially in the late 80s to early 90s where there was not much market for them. Even today, you can go down to one of the local Evil Ironworks and see a wonderful old device on the scrap pile... there are still things coming out of warehouses but.... in no ways like the early 80s... Ed Sharpe Archivist for SMECC ( CEO of Computer Exchange Inc. <<long since retired>> In a message dated 5/7/2015 10:33:33 A.M. US Mountain Standard Time, tmfdmike at gmail.com writes: 1. IBM would very often lease rather than sell, and take back machines when customers upgraded; it was obviously in their interests to control or eliminate where possible the market in used machines. 2. Gold. A lot of gold in old IBM kit. I knew a scrap dealer in Chelmsford UK that did nothing but break old IBM mainframes (only ever big boring grey boxes when I was there in mid to late 1990s though!) Mike On 7 May 2015 13:16, "Jon Elson" <elson at pico-systems.com> wrote: > On 03/13/2015 01:32 PM, Al Kossow wrote: > >> CHM was able to obtain volumes 18-20 of the IBM 2050 drawings, which are >> the microcode charts and ROS dump. I got them scanned and uploaded >> yesterday >> to http://bitsavers.org/pdf/ibm/360/fe/2050 >> >> This was one of the things that I had been trying to locate for a while >> now. >> >> >> Just a curious thing I've noticed. Given the historic significance, and > the large number of machines produced, I'm kind of amazed at the incredibly > small number of 360's that apparently exist. > > Yes, I know, any would-be collector could drag home a PDP-8 and put it in > his garage, even a whole rack mount system with an RK02 (or 3), dectape and > paper tape reader, and still get his car in the garage. And, the system > could be run off normal mains power. > > You can't do that with a real 360 (some 360/20's were pretty small), even > a 360/30 was a pretty big box. And, you can't run a 360 off normal > residential power, either. Many of the peripherals used 3-phase motors, > and hacking the converter/inverter to run off single phase would not be a > task for any but the most experienced EE. > > But, it sure is a shame that there appear to be a tiny number of machines > in existence. One list shows 15 or 16 machines, excluding the model 20. > Probably there are a couple more hidden somewhere, like the B1900 that came > to light so recently. > > As fas as I can tell, NONE of these systems is complete enough to ever > run, with the possible exception of the 360/30 at the CHM, which does seem > to have a complement of peripherals, and maybe control units, too. > > Given the number of DEC 10's that are actually up and running, this seems > a bit of a surprise. there might be some emotional attachments that are > behind this disparity. > Anybody have some comments? > > Jon >

11 years, 3 months

1
0
0 0

Sun dead battery / unresponsive openboot

by jules.richardson99＠gmail.com

The PROM battery appears to have died in my Sun U1 (Ethernet address and host ID all ff's etc.). I can hack a new battery into it at some point - but can anyone confirm whether the openboot environment should be responsive even while the battery is hosed? Via a serial console, I can send a break and get an OK prompt back, but then it appears to go unresponsive and won't accept commands (no key presses aren't echoed back to the screen). Using the same terminal emulator / cabling is fine with my other Sun (a U2), so I'm reasonably confident that the environment is OK, and that the problem is local to the U1 machine. cheers Jules

11 years, 3 months

5
6
0 0

VAX/VMS 5.1A documentation set to give away

by richardlo＠admin.athabascau.ca

Hi computer fans, I have been asked to dispose of the VMS version 5 documentation set in my office. This consists of 40 grey binders and all their contents. They are located in Alberta Canada. This is a large and heavy load with or without the binders. But who knows, maybe somebody out there wants such an artifact? I also have some spare boards and other parts for a VAX 4000 Model 500 if anybody has an interest in such things. They are smaller and lighter than the doc set. -- Richard Loken VE6BSV, Unix System Administrator : "Anybody can be a father Athabasca University : but you have to earn Athabasca, Alberta Canada : the title of 'daddy'" ** richardlo at admin.athabascau.ca ** : - Lynn Johnston

11 years, 3 months

5
7
0 0

Free stuff in London (Mostly DEC)

by williams.dan＠gmail.com

Hi, Due to a change in circumstances, I need to downsize my collection. Most of this stuff has been given to me free by other members of this group. It is first come first served, but if you gave it to me and want it back, obviously you have first shot. It is located in Piccadilly in London, and for the bigger stuff will need to be picked up before 11am any day inc. weekends. I also need to move it within 3 weeks. I have a busted hip at the moment so I can't help lift anything and they are located on the 2nd Floor. Now thats dealt with here's what I have : aMicrovax 3400 2x Vax 4000-200 (One has a broken PSU) Hp zx6000 (No drives) SGI GDM17e11 CRT 2x DECserver 300 5x DECsystem 3100 (Think they are all dead, have never managed to get them to go past diagnostics) 5x Gould os 3500 Oscilloscopes - All working but not been calibrated for years. Sgi Indy Massive box of DEC Cables, mostly DSSI Intel MDS - Non working, powers up but nothing happens 2x Alphaserver ES45 - These are HEAVY Let me know if you want it.. Dan

11 years, 3 months

6
7
0 0

A DIY card reader, FYA

by mhs.stein＠gmail.com

Added pics of an EPC-capable PPT perf and reader; obviously you'd normally only use one or the other: http://s1056.photobucket.com/user/dm561/library/?view=recent&page=1

11 years, 3 months

1
0
0 0

HP2100 core memory boards.

by mattislind＠gmail.com

In this (swedish) forum thread there is bidding going on for two core memory boards for what I think is a HP2100A/S. The current bid is 200 SEK. But it has to be fetched in Karlskoga. http://elektronikforumet.com/forum/viewtopic.php?f=11&t=77378 /Mattis

11 years, 3 months

1
0
0 0

Fwd: [rescue] 2 x Sun Netra T1's for free, London, UK

by venture37＠gmail.com

While we're on the subject of London & giveaways :) ---------- Forwarded message ---------- From: Jasper Wallace <jasper at pointless.net> Date: 5 May 2015 at 18:10 Subject: [rescue] 2 x Sun Netra T1's for free, London, UK To: The Rescue List <rescue at sunhelp.org> Hi, I'm hopeing to find a new home for 2 Sun Netra T1's, they are in London Hackspace on Hackney road near cambridge heath station, specs: 1st: Netra t1 (UltraSPARC-IIi 440MHz) 512 MB 2nd: Netra T1 200 (UltraSPARC-IIe 500MHz) 1Gb ram There are 4 x 17Gb drives and 2 x 36Gb drives with them, the 36Gb drives might be dodgey, but they where happy when i dd'd /dev/zero over them... Please contact me off list if you want to arrange pickup. -- [http://pointless.net/] [0x2ECA0975] _______________________________________________ rescue list - http://www.sunhelp.org/mailman/listinfo/rescue

11 years, 3 months

1
0
0 0

RS/6000 (AIX) password reset - Linux?

by jules.richardson99＠gmail.com

So, I got a couple of RS/6000 systems (7043-140's) from another listmember a while back, which I've finally got around to looking at. Both appear to be working (one had a bad cache RAM connection, now fixed), although I only have one drive between the two, which has AIX 4.3.2 installed. I don't have install media, and I don't know the root password; question is, can anyone tell me if Linux can mount AIX's filesystem, so that I can reset it? I'm seeing a whole bunch of conflicting reports about that, in particular that Linux' idea of JFS is based on that in OS/2, which is a different animal to that which existed in AIX. (reason for asking rather than just trying is that I don't actually have a PC-based SCSI board here with me; I'd have to put the AIX drive in one of my Sun or SGI systems, snarf raw data into a file via dd and FTP it across to mount it via a loopback device under Linux - then do the reverse to get the modified image back onto the disk) If it comes to it, I can try scanning the raw disk blocks for root's entry in the passwd file, removing the password (which I assume will just be a single-character indicator to use a shadow file anyway) and making up the slack in the comment field - which will hopefully work. But it would be far easier to just access the file directly. cheers Jules

11 years, 3 months

4
4
0 0

London collector clearing out

by lproven＠gmail.com

http://www.reddit.com/r/computercollecting/comments/34u6m1/free_machines_of… -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Cell/Mobiles: +44 7939-087884 (UK) ? +420 702 829 053 (?R)

11 years, 3 months

4
9
0 0

Vintage Computer Fest South East

by christian_liendo＠yahoo.com

For those of you that went. Did anyone post pictures?

11 years, 3 months

4
6
0 0

DEC manufacturing locations

by jnc＠mercury.lcs.mit.edu

> From: Ian McLaughlin > It would be neat to find open/close dates, pictures, etc for each > location. I recently acquired a mildly interesting book, "Images of America: Digital Equipment Corporation", by Alan R. Earls, which gives the opening year for a lot of DEC facilities (and pictures of quite a few). I'm not sure where his data is from, but that might be a start. Noel

11 years, 3 months

1
0
0 0

Cassette tape data recovery

by evan.linwood＠eastek.com.au

I'm wondering if anyone on the list has much experience recovering data from old cassette tapes? The tape to be read is a single cold-start tape that was found sitting the B1900 system picked up by Noel Chiappa just recently. Given the tape's importance, I'd rather not fry it or blow limited opportunities by attempting it myself! - Evan

11 years, 3 months

4
6
0 0

Creating a floppy drive exerciser

by alexandre.tabajara＠gmail.com

Well, things came to a point I have NO 360K drive I can attest it is working properly and aligned. I have some AAD alignement diskettes, but I need something to exercise the drive. Google seems not to know what a "floppy drive exerciser" is. Do people have some tips of schematics, programs, or will I have to roll my own? :) Thanks! --- Enviado do meu Apple IIGS (pq eu sou chique) Meu site: http://www.tabalabs.com.br Meu blog: http://tabajara-labs.blogspot.com

11 years, 3 months

3
2
0 0

Hex to Octal (3 digit) converer

by philip＠neoncluster.com

Hi, I?m looking for a program (or preferably an online conversion site, as I use Macintosh) that can convert a long stream of Hex, to 3 digit Octal. I have found one site that works ok (http://www.kjetil-hartveit.com/blog/10/hex-binary-decimal-octal-and-ascii-c… <http://www.kjetil-hartveit.com/blog/10/hex-binary-decimal-octal-and-ascii-c…>), but the octal it outputs is not always 3 digits long. Unfortunately I then need to manually add the missing ?0?s, which can be a huge pain for long listings, and open to human error. For example the above site does?. Entering this: 0E 09 11 1B 01 CD 05 00 Outputs this: 16 11 21 33 1 315 5 0 But I want this: 016 011 021 033 001 315 005 000 Does anyone know of a good site (or some good software)? Much thanks Phil

11 years, 3 months

7
12
0 0

TD Systems TDL-11 QBUS (SCSI?) card

by jnc＠mercury.lcs.mit.edu

> From: Seth Morabito > Well now I have egg on my face... Don't worry, you're not the only one... :-) > No, actually it DOES work. Wow. Live and learn. Or maybe actually DMA indeed _doesn't_ work with the CPU stopped, and what happened was that the DMA request was waiting in the card, and as soon as the processor started, it did the DMA? But how did the first instruction fetch produce a valid instruction? Unless the first DMA cycle (to 01000) happened before the processor fetched the first instruction? I'll have to try throwing a 'scope on a QBUS and manually (via ODT) starting a DMA transfer, with the CPU halted... see what (if anything) happens. Noel

11 years, 3 months

3
2
0 0

OS-9 Disks

by david＠thecoolbears.org

I have a few 5.25 floppies, about 4, that I would really like to have imaged. I *think* that they are OS-9 (Microware not Apple) format. I don't have a way to do it my self. Is there anyone out there who could help out?

11 years, 3 months

2
1
0 0

Computers_With_BASIC_in_ROM

by james＠attfield.co.uk

> However, with the Atari 400 and 800 and the Exidy sorceror, the BASIC ROM > module was, IIRC, included with the > machine in the standard configuration (i.e. if you bought an off-the-shelf > boxed version of one of those, you > got a BASIC module). Is that really any different from having the ROMs fitted > to the main PCB? > My Sorcerer came with the BASIC cartridge supplied as standard as did the one a colleague got. I also recall that this was the standard offering. James

11 years, 3 months

1
0
0 0

IBM Mainframe

by FRED＠MISER.MISERNET.NET

>I just received my first IBM mainframe. It's an IBM Multiprise 3000 >model 7060-H30. It's a a P/390 class machine. It has 6 18GB drives and >3 9 GB drives. I'll be posting some pictures on my website soon. *drool* I was watching that also on ebay. Almost went for it. Almost. :) I am glad it went to a good home. Fred

11 years, 3 months

1
0
0 0

Heath ET-3400 / ETA-3400 Anyone?

by drlegendre＠gmail.com

(Still in SBC mode..) I'm feeling a need for one of the Heathkit ETA-3400 memory & I/O expansion units for my ET-3400.. or at least a set of documentation such as could be used to build one of my own. Anybody have an ETA-3400 they'd be willing to part with..? A set of docs in PDF? As it sits, all I've got here is a copy of the ET-3400 'Modification Manual' which details the changes which must be made to the ET so it will connect to the ETA module. Thanks for any assistance..

11 years, 3 months

5
8
0 0

DEC Manufacturing Locations

by j＠ckrubin.us

Sorry for the munged URL and thanks to Vince for providing the full address. If you missed it first time, here it is again: http://www.vintage-computer.com/vcforum/showthread.php?47402-Place-of-manuf… I take the list in digest form to minimize the potential for ADD distractions; it also means that there is a lot of latency in my response time. Jack

11 years, 3 months

1
0
0 0

DEC manufacturing locations

by j＠ckrubin.us

Thanks to everyone who responded to my original query. This link is to the location list in DEC's 1993 internal directory - obviously more than just manufacturing - https://www.dropbox.com/s/szitkbpfwk...ctory.pdf?dl=0 . They had a _lot_ of locations! Jack

11 years, 3 months

7
6
0 0

GE TermiNet Models 310-340: scanned manuals

by p.gebhardt＠ymail.com

Hello everybody, related to the recent posts on the GE TermiNet 300, I uploaded my scanned TermiNet documents to the bitsavers ftp-server maintained by Al. Hoewever, while going through the docs, I realized that these are for the later line printer models 310, 320, 330, 340, and not for model 300, apologies for potentially created hopes and confusions. But in any way, adding these to the documents list cannot harm :) Kind regards, Pierre ------------------------------------------------------------------------------- Pierre's collection of classic computers moved to: http://www.digitalheritage.de

11 years, 3 months

2
1
0 0

TD Systems TDL-11 QBUS (SCSI?) card

by lists＠loomcom.com

Hi folks, I was recently given a load of QBUS stuff, and among the cards is a TD Systems TDL-11. I can't find a scrap of information about it anywhere. I have reason to believe it's a SCSI controller that emulates RL01 drives, based on its similarity to the TDL-12, which is documented online here: https://sites.google.com/site/glensvintagecomputerinfo/td-systems/tdl-12 Since I can't find a manual for it, I have absolutely no idea how to set its jumpers or activate its diagnostic monitor (if there even is one). Just to see if it would work, I tried following the instructions to get into the TDL-12's monitor, but they don't work on the TDL-11. Has anyone seen this card in the wild, or can anyone point me at a manual for it? A poor photo of my card is here, for reference (200K): http://www.loomcom.com/junk/tdl11.jpg Best Wishes, -Seth

11 years, 3 months

4
12
0 0

TD Systems TDL-11 QBUS (SCSI?) card

by jnc＠mercury.lcs.mit.edu

> From: Seth Morabito > 1. Halt the CPU and enter ODT I'm too lazy to check to confirm this, but I strongly suspect DMA requests don't get serviced while the machine is halted. If so, you could use the following code fragment to avoid that: 0400 12737 MOV #400, @#174400 400 174400 777 BR . Start at 0400, let it run for a couple of seconds, then halt the machine and look at 01000 and up. Noel

11 years, 3 months

2
1
0 0

8257 use in Intel MDS IOC

by spacewar＠gmail.com

I'm reverse-engineering the firmware of the IOC board of an Intel MDS Series II (with the iMDX 511 IOC firmware enhancement kit, so it's the same as early MDS Series III firmware, but possibly not 100% identical to firmware of the later MDS Series III using the IOC-III). The IOC uses an 8257 DMA controller, which was the predecessor of the 8237 as used in PCs. While it is mostly pin-compatible, the 8257 register map is a subset of nor compatible with the 8237. Not a problem since the 8257 datasheet is readily available. Except... The 8257 mode register (output) and status register (input) are register number 0x8 of 16. The data sheet says that A3 should be 1 and A2..A0 should be zero to access those registers, as expected, and does not document what (if anything) registers 0x9 through 0xf do. It's possible that they simply mirror register 0x8. In the MDS, the 8257 is I/O ports 0xf0 through 0xff, so mode and status should be at 0xf8, and indeed sometimes the firmware references those. However, the firmware also inputs from 0xfd, and writes to registers 0xfb, 0xfc, and 0xff. The values read and written don't seem to me to completely make sense if I make the assumption that they are mirrors of 0xf8, and I can't imagine why the firmware author would have used 0xf8 in some places and other port addresses in other places if in fact they are functionally the same. Intel published the source code of the ROMs for the MDS main processor (8080 or 8085), but I've never seen source code for the IOC firmware. Update as I was writing this up: I just spotted a comment in the MESS driver by fulivi stating that port 0xfd reads as 0xff and is used to detect whether the chip is an 8237 or 8257. If so, perhaps the 8257 either ignores input requests >from 0xf9 through 0xff, leaving the bus tri-state, or possibly it actually drives 0xff, and perhaps it ignores writes to 0xf9 through 0xff. I'll have to go back through the disassembly and study what that would do; it didn't seem like just the writes to 0xf8 made sense, but the other writes may have confused me. Has anyone actually seen a Series II or Series III with an 8237 on the IOC board? Perhaps the IOC-III uses the 8237? Eric

11 years, 3 months

2
2
0 0

Looking for SYSGEN and FORMAT for Versafloppy 1 controller

by philip＠neoncluster.com

Hi, I have a single CP/M 1.4 boot floppy that came with my IMSAI 8080 system. It?s been a bit of an effort, but the system is now fully functional from a hardware point of view. I?m now looking for SYSGEN and FORMAT programs (or any programs at all) for the Versafloppy 1 controller card. I?m hoping these will allow me to get a backup of the floppy before it dies. It?s already marginal, and boots only once in every 3 attempts, so whatever I do, I?m going to have to be very careful. For more info, you can see my post of VCF about it here: http://www.vintage-computer.com/vcforum/showthread.php?47424-Is-FORMAT-COM-… Cheers & thanks. Phil

11 years, 3 months

1
0
0 0

QBUS Memory card config info

by lists＠loomcom.com

In my recent Qbus haul, I found two non-DEC memory cards: 1. NSC NS23D 2. Dataram 40903 Rev G Both are fully populatd with 2MB (1MW) of 256Kb x 1 chips, and both are configured for address 0. I'd love to use both together in one of my systems, but I can't find a scrap of documentation anywhere, so I have no idea how to configure the base address of either card. Disappointing! Does anyone have docs for either of these beasts? Best Wishes, -Seth

11 years, 3 months

1
0
0 0

PDP-8 documents on eBay

by jnc＠mercury.lcs.mit.edu

So here's something interesting (but not in my line): PDP8/E Interface Manual - 1970 http://www.ebay.com/itm/271858083977 The same seller has some other PDP-8 documentation (set of prints of some sort, etc, etc). Noel

11 years, 3 months

1
0
0 0

Texas Instruments CC-40 won't boot

by fozztexx＠fozztexx.com

Picked up a TI CC-40 and it?s much smaller than I expected. I thought it was going to be the same size as a TRS-80 Model 100. I mostly got it because I wanted to try out the BASIC on it so I could update the list of computers with BASIC in ROM that I started on Wikipedia. http://en.wikipedia.org/wiki/User:FozzTexx/List_of_Computers_With_BASIC_in_… As soon as I got it I popped in some batteries and turned it on, and I was able to enter a one line BASIC program and run it. Then I pushed the OFF key and since then it won?t boot up at all, it just gives me half a screen of black squares. Thinking maybe I had put partially dead batteries in it, I replaced them with fresh ones and same thing. I also pulled the batteries and tried powering it up from the DC input jack, still no go. When it?s stuck like this the OFF key doesn?t do anything and neither does the little reset button next to the spacebar. I?ve looked around for a service manual and haven?t turned up anything. Did my RAM chips go bad? Did the ROM go bad? Here?s a pic of the CC-40 and an M100 next to it for scale: http://imgur.com/a/Irsev -- Follow me on twitter: @FozzTexx Check out my blog: http://insentricity.com

11 years, 3 months

11
28
0 0

Computers_With_BASIC_in_ROM

by bob099＠centurytel.net

The TI-74 BasiCalc, successor to the CC-40 -- But if any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel I Timothy 5:8

11 years, 3 months

1
0
0 0

Burroughs B1900 for sale in North Carolina

by jnc＠mercury.lcs.mit.edu

So I'm not sure what we've got, here. The machine seems to have only one memory board in it, so, just for grins, I decided to look at the online docs on the 1900, and see if it needed memory boards in pairs. The doc described the model 1905 and the model 1955 - both of which have a "diagnostic/maintainence control panel", with lights and switches, which this machine doesn't have. Although that may not mean that much - people started getting rid of them because they cost too much, so maybe this is a later model, without them. They also have a cutout in the top panel for a large keyboard (see pictures online of these model) which again this machine doesn't have (the cutout, that is)... It does seem to have one less CPU card than one of the models (forget which one) in the online manuals (CPU cards only go from A-H on this unit, not A-J), and no, there isn't a missing CPU card, i) the slots are numbered, and ii) there's no empty slot. I looked all over it for a model/serial number placard, which would give the model, but NSFL, couldn't find one. :-( It does have a large red placard panel on the front which says 1900, so I'm pretty sure it's _some_ flavour of Burroughs 1900, but... Anyone have any idea what this thing might be, exactly? Noel

11 years, 3 months

1
0
0 0

Multibus extender

by silvercreekvalley＠yahoo.com

Hi Does anyone have or no where to get a cheapish multibus extender card? I've seen a few new extenders for sale but they are quite pricey. Cheers

11 years, 3 months

1
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those moments when out urban exploring and i wana scream

by tdk.knight＠gmail.com

out exploring the rements of a paper mill 20 yrs in the making... mess i stumbled upone this sad iritating site one crushed smashed up pdp8i in the yard of burnt trashed industrial junk wasteland https://www.flickr.com/photos/1ajs/sets/72157651577592077/

11 years, 3 months

2
7
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Where's a good place to list stuff?

by jnc＠mercury.lcs.mit.edu

> From: Todd Goodman > There aren't many deals to be found on eBay anymore (IMNSHO anyway) for > vintage computer gear. Test equipment is a different story. Well, it still does happen occasionally. Someone (no idea who) recently got a really nice BA11-S for only $80 (admittedly, in part because I was confused about the closing time, and missed that auction :-). Although I guess "occasionally" is pretty much the same as "not many", so I guess you're right. If people are willing to buy lots (i.e. N things in a group), you can also get good deals. E.g. I know of recent lot that included 4 11/73 CPU cards; it turned out that although only one worked straight off, the J11 chips on the other three were all good - and the whole lot (including a bunch of other boards, all working) was only like $250. Noel

11 years, 3 months

2
1
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Visual Basic Question

by dj.taylor4＠verizon.net

I have a software driver for an old scientific instrument that is described in a brief manual this way: "The acquisition driver is a tool that allows developers to write their own Windows based programs that can acquire data from any Michelson series spectrometer. The programs can be developed with any programming environment that supports calling standard Windows 16bit DLLs. Examples of such environments are Visual Basic and Visual C++ from Microsoft ( up to version 1.5 ), Delphi and C++ >from Borland, Labview from National instruments. This document assumes that the reader is familiar with all the concepts surrounding DLLs and Windows programming. It is a reference guide that explains the parameters of the functions that make up the Bomem acquisition driver and how they are used to acquire data." I recently purchased Visual Basic 4.0 Standard Edition, but the first pages of the reference indicate that it is a 32 bit only version. Which version of Visual Basic will allow me to call this driver?

11 years, 3 months

4
8
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Multibus extenders?

by silvercreekvalley＠yahoo.com

Hi I?m trying to find a multibus extender card. I?ve seen a few for sale new, but they are a bit too pricey for me. Anyone know a good source or have an old extender for sale? Thanks.

11 years, 3 months

1
0
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Burroughs B1900 for sale in North Carolina

by jnc＠mercury.lcs.mit.edu

> On 4/14/15 2:07 AM, Nigel Williams wrote: >> I hope someone is able to rescue this system For those who were interested in this thing's fate, I just picked it up, and it's sitting safely in my garage, waiting for the new owner to arrange shipping. It's in really good shape inside (unlike my rodent 11/34's :-), and the cards look like they are all there. (If anyone's particularly interested in this machine, email me - _not the list_! - and I'll send you a copy of my detailed report to the new owner on its condition.) > From: Al Kossow > There are a couple of obvious things missing, like the cold-start > cassette Actually, there _is_ one of those there, still in the casette drive. Not sure how good a shape it's in after this long (or the casette drive, for that matter), but... > and any disk drives. Oddly enough, the seller did have two Burroughs packs (4 platter, I think). Not sure if they are from this machine, or what's on them - or how one would ever find a drive to read them on! > dumps of the tapes would be a good thing Alas, the tapes appear to be un-connected to the machine. Noel

11 years, 3 months

4
3
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IBM 5120-troubles removing card cage

by supervinx＠libero.it

Hi! I feel a bit stupid, since I tore apart a lot of machines so I should be able to remove the card cage... but... I removed back covers and the two screws which hold the cage in place. I pulled gently the card, and I encountered a fair amount of resistance. Looking into the chassis (there's a hole under the cathodic tube) I noticed that the yellow flat cable (coming from the power section) blocked the cage on the left. Freed the cage I couldn't extract it completely, since the cage fan cable and a semitransparent flat cable (both disappearing internally, can't say where by now) are very short. I was barely able to remove the cage metal top cover. The semitransparent flat cable starts from the I/O Cable Driver card in the "A" position... Am I missing something? The manual has images of the card cage fully extracted still connected to the cables, but I wasn't able to do this. Thanks! -- Vincenzo (aka Supervinx) --==ooOoo==-- My computer collection: http://www.supervinx.com/OnlineMuseum --==ooOoo==-- You can reach me at: www.supervinx.com www.facebook.com/supervinx http://www.youtube.com/user/supervinx http://www.myspace.com/supervinx

11 years, 3 months

1
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Burroughs B1900 for sale in North Carolina

by jnc＠mercury.lcs.mit.edu

> From: Nigel Williams > Do any of the tape labels suggest original distribution media? if so > would you be willing to share some of the descriptions please. None of the tapes have descriptive labels; all have only large labels with 4-digit numbers. In other words, they look like somsone's data tapes. One has a label from the Durham Insurance Company; a letter (which I found in the base of one of the cardboard boxes which held the tapes) is from the North Carolina Department of Public Instruction, and says that they received a "gift of a large number of used magnetic tapes" from that company, which they are handing out for free. Like I said, the tapes are useless. Noel

11 years, 3 months

1
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FREE FOR SHIPPING or LOCAL PICK UP: P133 DOS Gaming Machine

by slandon110＠gmail.com

Just clearing out stuff this spring. P133 Machine 16MB RAM 2GB HD 5.25 inch FDD- 360KB 3.5in FDD 1.44mb Has Windows 95 installed on it and a Voodoo 2 Card in it. Used to be my DOS Gaming machine, but ive since replaced it with another machine. Was given to me, So its Free for the cost of shipping to anyone who wants it, Or wants to come pick it up in Farwell Michigan Steve

11 years, 3 months

1
0
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M9301-YB Bootstrap/Terminator ROM dumps / listings?

by jnc＠mercury.lcs.mit.edu

> From: Jorg Hoppe >> Much of the M9312 ... was quite different [from the M9301] > ... here is the commented source code of all M9312 bootloaders. > ... > Very likely the actual PDP-11 code is identical to M9301 Err.... :-) Noel

11 years, 3 months

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M9301-YB Bootstrap/Terminator ROM dumps / listings?

by jnc＠mercury.lcs.mit.edu

> From: Jorg Hoppe >> Here's what I have so far: >> http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/M9301-YA.mac > Thanks for that effort! Eh, de nada. Interesting and educational. > The M9312 code should be similar, at least it may expose some ideas Some parts of it (e.g. the CPU diagnostic) are mostly identical (and the comments there, particularly on the single-op register instructions, are useful to total understanding of that code in the M9301); but alas, I had already done that part of the M9301 (at least, at a surface level)! Much of the M9312 (including the functionality of most of what I had yet to read in the M9301) was quite different. I did manage to get the 'print number' code out of it, but that was pretty much it. So I've done a lot of the remaining M9301-YA code (new version uploaded to location above); not the per-device code, I'll probably blow that off, but other than that, only a few tiny sections remain to be understood. Can someone with a M9301-YA please verify for me that location 165450 contains 0770? I think that perhaps that is wrong, because the code makes no sense if that's correct - maybe a bit has been dropped, or something? And if anyone has a good M9301-YB, I would appreciate a dump. (I do have one, but don't - yet - have a running UNIBUS -11 to plug it into.) > From: Don North > I've had two DL11-W in my 11/34A BA11-K box for years and have never > had an LTC issue. I suppose if you had a a larger number (say four or > more) you might possibly see an LTC issue Hey, all I know is what's in the manual (which Josh posted). :-) I'd forgotten there was a jumper you could pull - I tend not to like to do things like that as it makes the cards non-pull-and-plug interchangeable. Hence my suggestion to 'just use an M7800'. Noel

11 years, 3 months

6
8
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Old terminal avaialble in Houston

by nospam212-cctalk＠yahoo.com

I have an old terminal available in Houston. It is a red terminal with Bendix and Logicport 2 printed on the front next to the side of the screen and an acoustic coupler on the top. It comes in a big red carrying case. Need to move this out if anyone is interested contact me off list otherwise I guess I'll have to take it to the recycle center. Would rather see it go to someone who could use or enjoy it. David Williams www.trailingedge.com

11 years, 3 months

2
1
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Obsolete computer discs, etc.

by bob＠warriston.freeserve.co.uk

Second time of sending. A response, please. While turning out my attic I unearthed obsolete *discs for a 1980s Amstrad computer *which has long been disposed of. One disc is, as far as I know, in mint condition but a further twelve contain programmes. Another six discs contain long forgotten person data which I can't access. I am intrigued to know what they contain. Also in my searches I have found a *Microsoft Works manual* complete with system discs, and an *Amstrad user's manual*. Also about a*dozen 5" discs* containing stock records of warehouse long demolished. Again, I am curious to see what I recorded 30 years ago. I am reluctant to consign these items to the dustbin if a) the discs can be deciphered, and b) they are are of use to someone else. Your organisation has been suggested as a possible home for at least some of these items. Are they of interest? If not, do you know any organisation that might be? R.J. Rickard. Edinburgh.

11 years, 3 months

4
3
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ACT and CMI Unibus boards

by shadoooo＠gmail.com

Pictures of the two boards here: https://www.dropbox.com/s/56w5p671dxnlb1q/10039%20DUAL%20IO.jpg?dl=0 https://www.dropbox.com/s/rxf4e56cgo40bt5/10046_INTERLINK_U.jpg?dl=0 Andrea

11 years, 3 months

1
0
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HP TSB console lockout (was RE: HP (3rd party) id help?

by jwest＠classiccmp.org

Rick wrote... ---- The computer center (as it was called then) was very much off limits to just about anyone but the operator, ... ---- Maybe it is/was common knowledge, but I had forgotten about this tidbit until finding a 1 sentence note almost hidden in a manual... To keep people from entering commands at the console who were not authorized, TSB monitors bit 0 of the S register on the main cpu. If that bit is set, no console commands will run and it just echos back the characters that you type. On the older machines where the front panel key switch actually could lock the panel, for security if people had access to the machine room you could set Sreg bit 0 and turn the key to lock and take it with you. Console disabled. I was curious if this would work with the newer cpu's where the key switch was just a door latch and the "lock/operate" switch was behind the front panel. Alas, sr0 bit 0 works as expected to lock the console, but setting the lock/operate switch behind the front panel does not disable the switch register. So on those model cpus... I guess it's "security through obscurity" :) J

11 years, 3 months

1
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HP (3rd party) id help?

by jwest＠classiccmp.org

I don't think I ever asked this here, I apologize if this is a repost from long ago. I don't remember the answer in any case! In high school we had an HP 2000/Access system, and in one of the racks was a non-HP modem or leased line unit that supported multiple lines (maybe 16-ish ISTR). I remember there was a row of silver rocker switches (one for each channel). I think there was a rotary thumbdial on the right with numbers on it to select the line, and maybe an LED above each rocker switch to show which lines were in use. Maybe (not sure) there were some status LEDS on the right that showed status for whatever line was selected with the thumbwheel. I have a picture of the system racks at https://www.flickr.com/photos/131070638 at N02/17325691225/ In the dual bay HP on the right, it is the left rack, 2nd from the top. It's just under the 2748B paper tape reader and just above the 7900A disc drive. I was curious if anyone recognized definitively what brand/model that device was? Most unfortunately, that picture includes me holding a trophy for a programming contest and it shows I once was thin, once had hair, and always had acne LOL Kinda wish I had cropped it before uploading :\ I apologize for the fuzziness, it's a picture of a picture and the best I could get. The time period is roughly 1978-1982, and I think the system was a few years old already at the beginning of that period (was probably used and put together >from parts at other schools). Anyone know for sure on the comm device? J

11 years, 3 months

3
5
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Apple iBook G4 running Linux for sale

by shawn-gordon＠cox.net

I have Debian/Gnome installed on it, 1.2gb RAM and 56gb HD. I never configured the drivers for the wifi but a network cable works, shouldn't be hard to get the wifi working, I had it working with a different distro but swapped it out. Anyway, have a soft case for it and selling for just $80 plus shipping.

11 years, 3 months

2
1
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General Electric Terminet HP 2762A

by jws＠jwsss.com

I recently acquired a GE Terminet 300 in the guise of an HP 2762A terminal, KSR. I am attaching what I have so far in my blog. I've found little on the technical side for this terminal. If anyone has a manual I'd appreciate a copy. It is referenced in one listing of HP manuals, 02762-90001 the service manual. I'm not sure what to make of the one hit I get on that P/N that isn't bitsavers mirrors. I figured I'd ask here first. I'll also ask on the hp equipment group, I am on there too. hpmuseum.net is welcome to my photos, or contact me offline, and I'll make some better quality shots for your web site. I plan to get this going to use for the Multics Simulator at some point. The TN300 was a common console, and was an early symptom of the featureless, non-blink'n lites type shop that came to be. I know the Honeywell 6180 that ran Multics had an 8 panel service panel with wonderful sets of lights, but it was hidden in a cabinet, and typically not accessed by the operator. thanks Jim http://jimsoldtoys.blogspot.com/2015/04/2762a-terminal-printer-ge-terminet-…

11 years, 3 months

7
10
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ACT and CMI Unibus boards

by shadoooo＠gmail.com

Hello, thanks for the Info. I will post images of all the boards in next days. The ACT boards are indeed from Able Computer. From brochure pictures I identified these models: - DUAL I/O compatible dual DR11-C - BUSLINK for machine-machine bus link applications. Unfortunately there are no info about any of these board. Anybody has some documentations around on the shelf? Thanks Andrea

11 years, 3 months

1
0
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Ridge 32/330 up and running!

by derschjo＠gmail.com

Hey all -- Last summer I picked up a Ridge 32/330 that became available locally. This is a fairly obscure early RISC machine intended to be a competitor to the VAX, it uses a 32-bit CPU at 12.5Mhz built from discrete components (spanning three large PCBs). Mine's outfitted with 8mb of ECC memory, Pertec, SMD and SCSI QIC controllers, and Ethernet. You can see some pictures of this beast at: https://plus.google.com/117997069161125071032/posts/JtsR3BokUxp?pid=6063976… I got it running late last year after rebuilding the QIC tape drive and dealing with some intermittent failures due to a couple of low-quality DIP sockets. I now have a set of dedicated 20A circuits installed in my basement so I can run it for longer periods of time without worrying about burning my house down, so I'll be running it for the next couple of weeks just for fun to keep the basement warm and run up my electrical bill :). It's currently running RX/V 1.1 (Ridge's UNIX variant) and it's on the Internet (indirectly, since exposing a 25-year old UNIX directly to the 'net seems like a bad idea). I thought maybe some people here might be interested in checking it out since it's pretty obscure, if you want an account to play around, drop me a line and I can hook you up. I don't know of any other Ridge machines out there (running or not) -- if you have one let me know, there's very little information out there on these things. I'll add that I'm looking for an external SMD cabinet and cabling so that I can image the original SMD disk that was in the Ridge when I got it; it looks like it contains a valid partition table, but it will not boot. I didn't want to wipe it so the Ridge is currently running off of a spare drive -- I'd like to hook it up externally to dump an image from the running RX/V system. If anyone has one to loan (preferably within driving distance of Seattle) let me know. Once that's done, it's time to figure out how to get the Eagle that came with it running again... And a huge thanks to Al Kossow for archiving the OS media that's on Bitsavers, without which this machine would be a very large boat anchor taking up many cubic feet in my basement. (If anyone has any media or docs for this that aren't on Bitsavers, let me know -- I'm in particular looking for an ROS distribution on QIC media...) - Josh

11 years, 3 months

5
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Qualstar 1260 9 Track Tape Service Manual with Schematics

by marc.verdiell＠gmail.com

Question for all in general and Al Kossow in particular... There is a scanned version of the Qualstar 1260 Service Manual on bitsavers, but it cuts off right where it gets interesting, just before the schematics in Appendix C... Does anybody have the full version somewhere with the schematics at the end? (BTW, the 1052 manual version has the schematics). The Qualstar tape drive in question hooked up to my Mac SE/30 (of all things!): https://www.youtube.com/watch?v=YqIrMXxPGUA But it misbehaves now (squeaks while motor reverses and fails reads test, hopefully mechanical?). And my second unit caught another virus and now refuses to load tape or get the motors going. Both used to work fine. Time to open them up I guess. - Marc

11 years, 3 months

4
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PDP11/70 on ebay

by dj.taylor4＠verizon.net

There is a PDP11/70 for sale on ebay, item number 331537471267 Sure is nice looking and expensive... It seems to have a lot of boards and such, but no disk drive, what gives? Disclaimer: I am not the seller, nor do I have connection. Just a gawker.

11 years, 3 months

9
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IBM 14 inch HDA at goodwill link.

by innfoclassics＠gmail.com

Spotted on the goodwill site, a IBM 14 inch hard drive. Pretty unusual. Someone here might be interested. http://www.shopgoodwill.com/auctions/IBM-165600-Module-10SR-Mod-1-14-HDA-19… Paxton -- Paxton Hoag Astoria, OR USA

11 years, 3 months

4
3
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PDP11/70 on ebay

by jnc＠mercury.lcs.mit.edu

Wow. Someone really, _really_, ***REALLY*** wanted that machine. Noel

11 years, 3 months

1
0
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PDP-8/I replica kit

by oscar.vermeulen＠hotmail.com

Hi, I just completed the design of my PiDP-8, a kit replica of the venerable PDP-8/I, after exhibiting the prototypes at the VCFeX. Now, I'm gearing up to produce a batch of kits, and I'd like to collect expressions of interest in the coming two weeks.In other words, see how much interest there is, so I can determine parts volume and exact cost. -> Kit will cost no more than $135, hopefully a bit less (depends on volume!)-> Shipping will be $30 worldwide, as registered parcel with tracking -> Expected shipping date is mid-July, payment required only when kits are done-> Expression of interest means you're not committing to buy now, just indicate you're very likely to buy in early July. For details, here is a short Youtube demonstration:https://www.youtube.com/watch?v=5hyUActgT2E If you are (seriously) planning to buy the kit, please add your name to the mailing list via the box on this page and I'll update you on progress:http://obsolescence.wix.com/obsolescence#!pidp-8-get-one/ctny If you already got an email from me today (or you registered your interest just today), then you're already on the list - in which case please ignore this message. Regards, Oscar.

11 years, 3 months

6
12
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Resolved: Re: 11/34 sanity check

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > it never occurred to me to just try flipping it around since usually > that's a pretty good way to let the magic smoke out of things. Exactly. Except for cases where I _know_ the connector was designed to be able to withstand being plugged in backwards (e.g. IDE), I would _never_ try reversing a cable 'on spec'. The chances are just too big one will kill something. (Amusing factoid: QBUS cards have the same thing, they are designed so that you can plug them in backwards, and not kill things. I am somewhat ashamed to admit that one one occasion, I actually did this! Luckily the engineer who did the QBUS saved my behind.) > From: Johnny Billquist > On 2015-04-27 00:50, Mike Ross wrote: >> One does not casually reverse the installation of cables just to see >> if maybe it will work! > Actually.... I often have done so, just because of this. And how many times have you melted something down, doing that? :-) Noel

11 years, 3 months

6
6
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IBM 370 Mainframe Operator Control Panel on eBay

by jnc＠mercury.lcs.mit.edu

Here: www.ebay.com/itm/181726343378 Alas, it's 'Local pick-up only', in Portland, Oregon, but there may be someone here out there who's up for it. Noel

11 years, 3 months

1
0
0 0

VK170 M7142 Serial Video Board

by jws＠jwsss.com

I have a friend preparing to bring one of these up in a small system (2 wide) backplane with an M7676 standalone pdp 11 card. Anyone have any experience with configuring these? Looks like the monitor is going to be a 9" Ball brothers monitor, not sure what else. Documentation is plentiful, but options are also complex, so someone who has one working, or any experience would be welcome to comment. thanks Jim

11 years, 3 months

1
0
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M9301-YB Bootstrap/Terminator ROM dumps / listings?

by jnc＠mercury.lcs.mit.edu

> From: Jorg Hoppe > I also have a spare DL11-W to offer Josh, if you want a second serial line, it's best to use a regular DL11 (M7800), not a DL11-W. (M7800s are available on eBay, for pretty modest amounts.) The reason is that each DL11-W presents a load on the line clock signal (from the power supply), even if the line clock on the second board is disabled; several Dl11-W's, and the line clock signal may get overloaded. > From: Josh Dersch > I need to scare up a second SLU so I can get an emulated TU-58 hooked > up to try booting XXDP I'm not sure any M9301 variant supports the TU-58? Some are set up to boot over the console serial line, though. (I haven't yet checked the code, so I don't know whether you need to feed it the absolute loader first, or if it will just take .LDA files directly.) And I just realized you're working with a -YB, and I've been dis-assembling the -YA! Fat lot of use that would have been! Oh well, I assume the code is fairly similar, I'll do the -YB next. (Anyone have a dump, to start me off?) > comparing the diagnostic/console PROM listings to what I have Where were those from? Thanks in advance... > From: Henk Gooijen > I could be wrong, but ISTR that in the first few words of a ROM are the > two capitals of the boot device that the PROM supports. Not in the M9301-YA, in either bank. Noel

11 years, 3 months

4
4
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ACT and CMI Unibus boards

by shadoooo＠gmail.com

Hello, just received some Unibus boards, some are from ACT, one from CMI. I would identify these boards. The first is a big hex board, marked ACT 10046: on front side has two 50pin connectors, plus two female edge connectors on the left side (some sort of narrow bus extender?). There are some resistive terminators onboard near one of the 50pin connectors. Very strange board... The second is a quad board marked ACT 10039: it has four 40pin connectors, two on front and two on a side. The last is for sure a RAM board, as it includes an array of 16x9 HM4716 ICs, with a total of 128KW. It's from CMI ON 207-010-300 and it has a lot of wire-wrap jumpers for configuration. Anybody has some knowledge over these boards? Thanks Andrea

11 years, 3 months

3
2
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PDP11/70 on ebay

by jnc＠mercury.lcs.mit.edu

> From: Mark J. Blair > I may be able to do that if A) it's still there in a couple weeks It won't. There are already two bids on it. Noel

11 years, 3 months

2
1
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PDP11/70 on ebay

by jnc＠mercury.lcs.mit.edu

> From: Douglas Taylor > Sure is nice looking and expensive... I can't figure out if that price ($5K) is reasonable or not. I have previously dealt with that seller on another item, a dead/banged-up 11/05 that another list member wound up buying; the seller's asking price on that was a little high (based on the average of sales since then for that class of machine), but not an integral factor high, as often seen on eBay (or an order of magnitude high, also to be seen on eBay). My guess, given how rare they are now, the fact that it's complete (including all cables - often cut/removed), etc, etc is that this is once again in the ballpark, if on the high end. Am I confused? Noel

11 years, 3 months

7
7
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VCF East articles + pictures

by jnc＠mercury.lcs.mit.edu

> From: Evan Koblentz > Hackaday sponsored our Friday "VCF East University" classes and they > wrote many articles about us before, during, and after the show: Apparently Christopher Parish's RL02<->USB adapter went viral, e.g.: http://www.techspot.com/news/60442-world-largest-usb-thumb-drive-has-10mb-s… Noel

11 years, 3 months

3
4
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M9301-YB Bootstrap/Terminator ROM dumps / listings?

by jnc＠mercury.lcs.mit.edu

> from what I've seen so far, the code tends to loop on error, not halt. So I lied: it turns out that some of the later tests (in the extended tests - JSR, memory) do in fact halt on error. I realize it's not needed immediately now (Josh having solved his problem), but I've got the low part (diagnostics and TA11 boot) done, working on the top part now. Here's what I have so far: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/M9301-YA.mac I haven't densely commented the CPU tests as they seemed, at first glance, pretty non-complicated. The memory diagnostics are pretty inscrutable, I don't really understand them yet (may not bother). The top part (console and othr boots) - hoo boy, talk about 'sphagetti code'!! I think there's a picture of this in the dictionary when you look that term up. Very, very ugly code. That part may take a while... Noel

11 years, 3 months

2
1
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M9301-YB Bootstrap/Terminator ROM dumps / listings?

by jnc＠mercury.lcs.mit.edu

> From: Charles Dickman > You can find a dump and partial disassembly So I decided, just for grins (this may be duplicative of what's on a fiche somewhere) to complete the disassembly, and there was something that was puzzling me. There a bunch of entry points (for auto-booting from different devices) which all are of the form: BR foo where foo is the same location. The code doesn't save anything before the branch, it just does it right off. So how does it know, when it gets there, which entry point was used? Well, it turns out that the answer, I am pretty sure, is that with the M9312, location 773024 is even more magic than it first appears. (Slight digression, for those who didn't get the reference: the way the M9312 forces the 11/04 or /34 CPU into the ROM, on power-fail or manual restart, is that when the CPU tries to fetch the PC/PS pair from location 024 - the power-fail/restart vector - the card jams the high UNIBUS address lines to 773000 for two bus cycles, directing the fetch of the new PC/PS to locations 773024-6. Next, when the CPU fetches the contents of location 773024, the basic contents of that location, in the ROM - 173000 - are or'd with switch S1-3 (bit 8, 4xx) through S1-10 (bit 1, 2). So that's how the code jumps to different entry points, based on the contents of S1.) However, from reading the code (yet to verify this on prints, but it _has_ to work this way, the code doesn't make any sense otherwise), it appears that _any_ reference to location 773024, at _any time_, produces the contents of ROM location 773024 or'd with the contents of switch S1!! In other words, location 773024 is effectively a hacky register that allows S1 to be read. (And the M9312 Maint Manual does _not_ make this clear. It talks about how the contents are modified during the power-on PC/PS fetch cycle, but _not_ about the later references part.) Very clever, though! Noel PS: Josh, from what I've seen so far, the code tends to loop on error, not halt. So if your machine's halting...

11 years, 3 months

5
5
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HP 700/92 green screen terminal for sale

by shawn-gordon＠cox.net

$75 plus shipping. Perfect working condition. thanks, shawn

11 years, 3 months

1
0
0 0

Obsolete computer discs, etc.

by bob＠warriston.freeserve.co.uk

While turning out my attic I unearthed obsolete *discs for a 1980s Amstrad computer *which has long been disposed of. One disc is, as far as I know, in mint condition but a further twelve contain programmes. Another six discs contain long forgotten person data which I can't access. I am intrigued to know what they contain. Also in my searches I have found a *Microsoft Works manual* complete with system discs, and an *Amstrad user's manual*. Also about a*dozen 5" discs* containing stock records of warehouse long demolished. Again, I am curious to see what I recorded 30 years ago. I am reluctant to consign these items to the dustbin if a) the discs can be deciphered, and b) they are are of use to someone else. Your organisation has been suggested as a possible home for at least some of these items. Are they of interest? If not, do you know any organisation that might be? R.J. Rickard. Edinburgh.

11 years, 3 months

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OT: CSS help needed

by evan＠snarc.net

Anybody awake who's good at CSS and can help me on the phone right now? It's 1:10AM ET. If so, then please send me a private email: evan at snarc.net

11 years, 3 months

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Saving my Mac SE/30. My first foray into SMD work

by terry＠webweavers.co.nz

For those that might be interested http://www.classic-computers.org.nz/blog/2015-04-28-recap-se30.htm I guess a lot more classic computer enthusiasts will be doing SMD work for repair in the future as "vintage computing" starts to encompasses machines >from the 1990s. Terry (Tez)

11 years, 3 months

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M9301-YB Bootstrap/Terminator ROM dumps / listings?

by derschjo＠gmail.com

The 11/34 seems to be pretty healthy, I've punched in some code to do some basic testing and the CPU seems to be capable of running simple programs and the RAM seems capable of holding data. So that's good. I've also verified that the console SLU is at the right address and vector (it wasn't initially, due to a pair of bad DIP switch blocks), and I can read/write characters from/to it. Huzzah. The bootstrap ROM doesn't seem to be executing properly, however. After power-on or a BOOT/CTRL It'll run for a fraction of a second and then halt, leaving me at address 0 with 161721 displayed. ROM Data appears at the expected addresses (773000-773777, 765000-765777) but I don't know if it's at all correct. I need to scare up a second SLU so I can get an emulated TU-58 hooked up to try booting XXDP, but in the meantime I thought I'd see if I could verify the ROM contents manually (it's only 512 bytes long). I can't find a listing, however -- the operator / maintenance manual doesn't contain it and I haven't found it anywhere else. I've found a reference to a microfiche, "EP-M9301-RL-A" that supposedly contains these listings, but it doesn't appear to be archived anywhere. Anyone have this, or have dumps of the M9301-YB PROMs? Thanks, Josh

11 years, 3 months

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IMSAI chassis color/texture...

by steven＠malikoff.com

I have not seen an IMSAI except for photos, so I'm guessing here - I suspect the finish it has is a spatter or blobby texture? If that is the case why not ask on a Board where people know all about such things. A bit of googling found this one which has amongst others a 'Specialty Coatings' and a 'Commercial and Industrial Painting' forum: http://www.painttalk.com I'm sure they could figure it out if a close-up photo was posted. Steve. ---------------------------- Original Message ---------------------------- Subject: RE: IMSAI chassis color/texture... From: "Bill Sudbrink" <wh.sudbrink at verizon.net> Date: Sat, April 25, 2015 12:50 am To: "'General Discussion: On-Topic Posts'" <cctech at classiccmp.org> -------------------------------------------------------------------------- > Al Kossow wrote >> On 4/24/15 1:22 AM, Philip Lord wrote: >> > https://365pantone.wordpress.com/2013/12/02/pantone-7690/ >> > >> >> It's not the color so much as correctly duplicating the texture. > > Exactly. I'm talking with a couple of local (to me) paint shops. > They all have high tech color scanning and can scan my good chassis > for the color. The debate over whether the texture was accomplished > by some kind of powder coating or air brushing is the big thing. The > original documentation talks about "IBM Blue" which is also a pantone > color. Neither look "right" to me... on my computer screen anyway. > I have not seen an actual paint chip. > > Bill S. > > > >

11 years, 3 months

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HMI 68000 emulators

by wulfman＠wulfman.com

I am converting a 68008 HMI emulator back to a 68000 emulator. there are 2 headers that must be changed from 68008 to 68000 j1 and j2 i need a person that owns this emulator to pop off the plastic covers and record the jumpers soldered on the headers i can provide pictures to bitsavers of the 68008 conversion as well as pictures of the 68302 hmi emulators and a diagram of the 68008 headers. -- The contents of this e-mail and any attachments are intended solely for the use of the named addressee(s) and may contain confidential and/or privileged information. Any unauthorized use, copying, disclosure, or distribution of the contents of this e-mail is strictly prohibited by the sender and may be unlawful. If you are not the intended recipient, please notify the sender immediately and delete this e-mail.

11 years, 3 months

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IBM 5120 again.

by supervinx＠libero.it

I've a request for a friend of mine. He's experiencing vertical bars on the display, characters repetitions and video shifting. For example, AABBCCDDEEFF or LOAD0 LOAD0 xxxx xxxx The 5120 completes its post. We suspect the video card shift reg or similar. He told me he cleaned all contacts and cheched all the cards. We need the SY34-0193 or SY31-0552 manuals. Can someone help? Thanks! -- Vincenzo (aka Supervinx) --==ooOoo==-- My computer collection: http://www.supervinx.com/OnlineMuseum --==ooOoo==-- You can reach me at: www.supervinx.com www.facebook.com/supervinx http://www.youtube.com/user/supervinx http://www.myspace.com/supervinx

11 years, 3 months

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11/34 sanity check

by derschjo＠gmail.com

While I was waiting for the Ridge's disk to dump over a 9600bps serial port, I finally got a chance to work on my 11/34. Picked it up last summer and it was in good shape but the power supply was completely dead. I've rebuilt the supply and last night I worked out the last few kinks. So at this point all voltages are spot-on, the AC LO and DC LO signals are high (these are active low, right?) but I can't get the machine to respond at all -- the "DC ON" and "RUN" lights are lit up brightly, and the "SR DISP," "BUS ERR," and "MAINT" lights are glowing dimly. The status register display is dark. The system does not respond to any keypresses on the panel. I'm getting better with UNIBUS stuff but I wanted to run this past you guys before I whip out the debugging tools and start tracing things. I've taken it down to a pretty minimal configuration, sans any memory or other stuff. Here's what I have in the main backplane (all others are disconnected for the time being) from right to left: Slot 1: M7266 (CPU) Slot 2: M7265 (CPU) Slot 3: (AB) M9301 (bootstrap terminator) / (CDEF) M7859 (front panel board) Slot 4: empty Slot 5: empty Slot 6: empty Slot 7: empty Slot 8: empty Slot 9: (AB) M9302 (terminator) The "empty" slots have Grant Continuity boards installed and the NPG jumpers on CB1-CB2 are all present on the backplane. I've confirmed that all the right voltages are making it to the backplane (and I've cleaned up those damned Molex connectors as well, just to be sure). Is there anything I'm missing? Anything I should try? Does this failure mode sound familiar at all? Thanks as always, Josh

11 years, 3 months

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Equipment available in Wichita, Ks

by microfilm＠microfilm.kscoxmail.com

I'm with Microfilm Services, Inc in Wichita, Ks. We've been in business nearly 50 years, and have to do some serious house cleaning. We are a microfilm service bureau and laser printing shop. These industries have long relied on what is now old equipment. Our cameras were fed by PDP11/34's with data coming in on 9T tape. Our laser printers were fed by 9T tape and Bus & Tag online interface. At this time, we have the following equipment for sale. You good folks get the first crack at it. Anything unsold as of Friday, May 1, 2015 will go on ebay. Anything unsold after that will go to the recyclers. Make offer on any/all, buyer arranges freight for large items, pay shipping on smaller items, from Wichita, Ks. Laser Magnetic tape drives, 6250bpi, one available. StorageTek 2920 tape drives, 6250bpi, two available. 3480 cartridge drive. All of these are Pertec interface (2x50 pin). Exabyte 8000 external DAT tape drive, SCSI interface. Tandberg 1.2GB QIC tape drives, internal, SCSI interface, several available. ** HARD DISKS *** Micropolis 1355 (ESDI, 151MB, 5.25", full height) - Several on hand Imprimis 94155-67 Wren-II (ST506/412, 56MB, 5.25" full height) - At least 4 on hand, possibly more Other assorted ESDI hard disks. Bus & Tag cables - multiple pairs available Bus & Tag terminators - lots. Barr Systems Bus & Tag ISA interface for PC, with D-sub to Bus & Tag cable. I have several of these cards, and two different host computers. One ran Windows NT Server 4.0, the other ran MSDOS. No idea if either host computer still functions. EPROM's - 27c128, 16k x 8, 12.75v programming voltage. I have 9 of these sitting next to me, and should have at least another 20-30. DEC DCJ11-AE 11/70-on-a-chip - I have several of these chips available, all believed to be functional. They came from Xerox 4090 printer controllers, which use a customized backplane. I have an entire 4090 controller available, working, as well as assorted cards. DEC h771-a power supply. I think these are for an RX01 drive? Two available. Never seen them in my time here, so assume the worst re: function. DEC h7834 (LA-34) power supply. One available. Astec power supply - 4 rails, 5v @ 3A, 12v @ 3A, 12v @ 20A, 5v @ 150A (not a typo). 220v input. These fed the modified Massbus card cages in the 4050 and 4090 print controllers. Four available. Link Technologies MC5 terminals, rebadged by Xerox, 220v. These appear to be locked into ADM3A emulation for use on Xerox printer controllers. Sun Microsystems power controllers, with line cables, have 3. (E-M Solutions Model 10, 250VAC) Sun Microsystems rack, one available. System Industries rack, one available. Bell & Howell CM-3700 COM recorder Comstor COM recorders, 2 available Canon Canofile 16mm microfilm cameras, with heads. Minolta DAR automatic 16mm microfilm camera Complete Xerox 4090 laser printer with online (bus & tag) interface, 9T tape drive. Complete, operational Xerox 4635 with Sun x86 controller. Misc solid state relays, mechanical relays, contactors, motors (12vdc, 20vdc, 24vdc), power supplies. I'm open to offers on any/all, we just need it gone. Photos available. Equipment is available for inspection by appointment. We can accept paypal (including credit cards via paypal), company check, money order, cash (in person only). Local sales and pickups are subject to sales tax. Thank you for any interest! --Shaun Microfilm Services, Inc. 316.269.2203

11 years, 3 months

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Still looking for VAXstation 3100 / Model 76 RAM

by polemon＠gmail.com

Hello, this is my first time posting to this ML. I'm trying to restore my old VAXstation 3100 / Model 76, to a more stable working order. One of the biggest problems, seems to be finding RAM modules for it. I've been looking for them in various places for many years now, but nothing has really come up. I seriously considered making them myself, as I have pretty decent skills in lay-outing PCBs, and electronics. I also need those rubber grommets, that hard drive used to be attached with to the chassis. The rubber seems to break down after twenty five years or so, and they start to become goo, kinda like warm licorice. Pretty much any periphery for the 3100/M76, like periphery, etc. I'm interested in that. Anything except the monitor, probably. I do have the GFX card in the machine, but the monitors fetch huge prices, and a big heavy thing like that, would cost a fortune to ship to Germany. Oh right, I'm in Germany. I'd pay for shipping and all that, of course. Cheers, --polemon

11 years, 3 months

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Sad News: The passing of Roe Peterson

by useddec＠gmail.com

A mutual friend told me about this a week or so ago, but I was waiting to get the obit before forwarding it on to the list. He will be missed. http://www.legacy.com/obituaries/leaderpost/obituary.aspx?pid=174716697 Thanks, Paul

11 years, 3 months

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IMSAI chassis color/texture...

by philip＠neoncluster.com

Hi Bill, Screens, and the like (projectors etc), use a different color theory from pigments such as paint. One is additive color theory, the other is subtractive. You will be hard pressed to find a match between the two. I?ll forward you and Al a photo showing the 7690 pantone chip places on my IMSAI case as a side by side comparison. Color-wise, it?s almost a perfect match. Phil > On Apr 25, 2015, at 2:50 AM, Bill Sudbrink <wh.sudbrink at verizon.net> wrote: > > Al Kossow wrote >> On 4/24/15 1:22 AM, Philip Lord wrote: >>> https://365pantone.wordpress.com/2013/12/02/pantone-7690/ >>> >> >> It's not the color so much as correctly duplicating the texture. > > Exactly. I'm talking with a couple of local (to me) paint shops. > They all have high tech color scanning and can scan my good chassis > for the color. The debate over whether the texture was accomplished > by some kind of powder coating or air brushing is the big thing. The > original documentation talks about "IBM Blue" which is also a pantone > color. Neither look "right" to me... on my computer screen anyway. > I have not seen an actual paint chip. > > Bill S. > > >

11 years, 3 months

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looking for info of the DEC Remote Services Console

by henk.gooijen＠hotmail.com

I saw a few listings on eBay of the DIGITAL Remote Services Console. I have one in excellent condition, and it would be nice to put it in use. But so far, I have not been able to find *any* documentation. Info on the four 25-pin sub-D connectors would be a great start. They are labeled A1, A2, B1, and B2. For pictures in the auctions, I'm guessing that A1 connects to a VT-style terminal and A2 connects to the system console port. That implies that the B connectors are intended to connect to modems. But I do not want to connect anything until I've seen documentation! Does anybody have info on this nice box? thanks, - Henk

11 years, 3 months

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11/34 sanity check

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > the power supply was completely dead. I've rebuilt the supply Just out of curiousity, what was the failure mode? (Also, trying to figure out of the failure could have killed things...) BTW, is it in a BA11-K box, or a BA11-L? > the AC LO and DC LO signals are high (these are active low, right?) Yes. All UNIBUS signals are active low _except_ for grants, if memory serves... > The status register display is dark. Hmmm. > The system does not respond to any keypresses on the panel. Sounds like you've got the variant with the real ("Programmer's") front panel - that's a plus. Although it's too bad that variant doesn't have a "HALT/CONTINUE" switch - it would have been good to power it on with the HALT on, which would have prevented it from trying to do any bus cycles. No response to HALT/CRTL, though? Although I'm not sure if it would respond to that if it was in a double-bus fault loop (NXM on trying to respond to a NXM). > I've taken it down to a pretty minimal configuration, sans any memory > or other stuff. Always wise... :-) > Slot 3: (AB) M9301 (bootstrap terminator) / (CDEF) M7859 (front panel board) Most 11/34's run those cards in slot 4, not 3 (probably to leave room for the FPP/Cache in slot 3), but slots 3 and 3 are (AFAIK) identical, so it should be OK to run them there. > the NPG jumpers on CB1-CB2 are all present on the backplane. Err, I hope that's a typo for "CA1-CB1" - tying CB1 to CB2 (+15V) would not be good (although if you did do it, it should be harmless in this configuration). I don't really have much to add to Don's message, about the next things to try. There doesn't seem to be a way to configure the M9301 to have the machine halt on power up, which would to my mind be the ideal. It might be worth throwing a 'scope probe on MSYN, to see if it's trying to do bus cycles. Noel

11 years, 3 months

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Logic Analyzers and In-Circuit Emulators

by aek＠bitsavers.org

I spent the last week trying to document some of my analyzers and ICEs. There are tons of photos, firmware dumps and some new manuals on bitsavers under appliedMicrosystems, biomation, hmi, futuredata, hp/te hp/64000 and hp/64700. The HMI-200-68000 manual that arrived today had the 68K DOS software in the binder, zipped and up now under bits/HuntsvilleMicrosystems Has anyone ever noticed a pattern to the numbering on the underside of MMI PALs? It would be nice not to have to lift the labels off them. The ones I indentified were B7304 14L4 B7320 16L8 B7321 16R4 B7830 20S10 B7840 20L8 Most are protected. Every once and a while I found one that wasn't. I'd be interested in other AMC ICE firmware dumps to add to the archive. I've made some progress identifying the buses and what the various chunks of firmware are for. Next thing to do is trace the pinouts and see if the house-marked 6809 memory mapper is a MC6829. From looking at the manual, the HMI-200 is kind of interesting in that it can run without a target. The Applied Microsystems units require a 'null target' board.

11 years, 3 months

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Looking for a MOS Kim-1 for sale or trade

by mail.nickallen＠gmail.com

Looking for an EARLY MOS KIM-1 computer, let me know if you are interested in trading for it, or selling it, thanks! -Nick

11 years, 3 months

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DEC scanned documents for Bitsavers (message for Al Kossow)

by jnc＠mercury.lcs.mit.edu

> From: shadoooo > I'm scanning at 600dpi grayscale, lossless compression. I've been scanning a few things too, and I found that 600dpi grayscale produced absolutely enormous files (many, many MB's per page, for prints), no matter what I tried to do, compression-wise. 600dpi black and white, followed by saving as TIFF's with CCITT Group 4 compression, produced immensely smaller files (small 100's of KB's for the same pages), and they are quite readable (even the fine letter seems to be readable - b/6 is quite distinguishable, etc). Al, I hope that's acceptable for BitSavers - I have a number of things that are missing, and I was planning on scanning them in, and sending them along. Noel

11 years, 3 months

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Two new IBM DOS scans

by silent700＠gmail.com

Not that DOS...DOS! I have scanned two docs, "DOS System Control and Service" and "DOS Messages." They can be found here: http://chiclassiccomp.org/docs/index.php?dir=%2Fcomputing%2FIBM%2FMainframe… and would seem to belong here, if aek would like to add them: http://bitsavers.trailing-edge.com/pdf/ibm/360/dos I will probably find more in this set as I work through the stacks. Enjoy! -j

11 years, 3 months

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Hand-wired core for ROM?

by jnc＠mercury.lcs.mit.edu

> From: Brent Hilpert > Core rope ROM has one magnetic core per the word-width of the memory. > That is, a memory of (say) 1024 16-bit words would have 16 cores. Not always (although your basic point, that in core ROM, a single core is often/usually used for more than one bit, is a very key point to note); the Apollo rope ROM had one core per 192 bits, or 12 words of 16 bits each, "thousands of ... cores" per memory rope. See: http://web.mit.edu/digitalapollo/Digital%20Apollo%20Annotated.doc and there's a picture of one here: http://klabs.org/mapld04/presentations/session_g/g1007_hall_s.ppt (see slide #15). Those notes do contain an interesting aside: "rearrange the program's fixed-memory allocations to avoid cases where such sets of 12 words contained too many ones to fit in their cores", which implies that the cores were fairly small, physically (since a one involved running the wire _through_ the core, not around it). I don't know why they didn't make the cores larger, and have fewer of them; my suspicion is that in manufacturing terms, it was easier to have more of them, with less wires through each one. (I can't think of an _electrical_ reason to do so; unlike with RAM cores, where smaller cores are faster to switch, and take less power to do so.) Noel

11 years, 3 months

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IBM 5160 oddball fault

by jules.richardson99＠gmail.com

I picked up a (known-faulty) 5160 a few weeks back, just because it had a keyboard with an intact decal, and the one on my otherwise-perfect system is missing. The machine came with a CGA card, which I've tested as working in my other 5160. Symptoms of the fault are one long beep and two short beeps at power-on, with 1024 characters of garbage displayed on-screen (typically either a solid block or a space, but with a handful of other random chars) - i.e. 12 rows of 80 and then a row of 64. Following this on screen, at location 13,64, the memory count occurs, and then it'll drop to ROM BASIC (no hard disk, and for the purposes of testing I've not bothered with a boot floppy), with the BASIC startup text starting at row 14 and all offset by 64 characters from the left margin. However, the function key reference on the bottom line of the display is OK, starting at position 25,1. I can issue BASIC commands, and each new line is offset by 64 characters, until I hit the bottom of the screen, at which point text appears at position 1 (but still offset from the top of the screen by 13 lines). Issuing a 'cls' doesn't remove the garbage from the display, and typing then resumes from location 13,64. Throughout all of this the cursor seems to appear where I'd expect it on the screen, however - I'm assuming it's done via hardware entirely within the CGA card. I've tried pulling all other cards, leaving just the CGA board, and the problem persists. One long and two short beeps seems to be 'video failure', but as mentioned I've verified that the card works in my other 5160. Does anyone have any ideas what might be going on? It doesn't quite seem like a memory fault - possibly some sort of address decoding error? It's almost like the video board is pulling display data from the wrong part of memory, but I'm not sure that makes sense given that the board has its own local RAM rather than relying on RAM on the system board. cheers Jules

11 years, 3 months

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DEC scanned documents for Bitsavers (message for Al Kossow)

by shadoooo＠gmail.com

Hello Al Kossow, I'm scanning a bunch of documents. Many of them aren't not listed on Manx, and shouldn't be already loaded on bitsavers. I'm scanning at 600dpi grayscale, lossless compression. I could upload the documents somewhere in original RAW format, or already deskewed, converted to TIFF BW bitmap. I would contribute to Bitsavers, please contact me offlist for details of upload. Unfortunately I don't have a server, and the raw documents are heavy. Thanks Andrea

11 years, 3 months

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Pile Of Computer Stuff Up For Grabs (Mid Atlantic)

by fsmith＠ladylinux.com

Hiya, I have posted this in the past but I hate selling things but really that is selfish on my part and some of my interests have shifted. I need to move some items from the "Dust" and into the light from my collection. Its all stored in my climate controlled clean basement. I have mostly Dec gear although there are sprinkles of other stuff such as Kaypro's , Osbournes etc ... No blinken lights machines but some PDP's such as the 11/23 etc along with some Vaxstations and Alphas. The prices will be cheap and geared towards putting this into hands that can use them over people wanting a quick flip. I will not ship although anyone who wants to work with someone to pick up a pile and ship it is more than welcome. I am in the mid atlantic area and can be contacted via my gmail address ladylinux4u at gmail dot com. Thanks!! Fran --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com

11 years, 3 months

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In search of DEC H7140 (PDP-11/40 power supply) parts

by JoshD＠LivingComputerMuseum.org

I'm working over at the Living Computer Museum in Seattle and we're attempting to revive a PDP-11/44 for use in a project. At some point, someone stripped the power distribution panel from the 44's H7140 power supply (this is a small PCB that connects to the power supply terminals and provides molex power connectors for standard UNIBUS backplanes (or other backplanes). Anyone happen to have one of these distribution panels (or failing that, a complete supply) going spare? Thanks! Josh Sr. Vintage Software Engineer Living Computer Museum www.livingcomputermuseum.org<http://www.livingcomputermuseum.org> (206) 342-2537<tel:%28206%29%20342-2537>

11 years, 3 months

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IMSAI chassis color/texture...

by philip＠neoncluster.com

Once I get home, I could probably cross reference with a pantone color for you. > On Apr 23, 2015, at 2:38 PM, Bill Sudbrink <wh.sudbrink at verizon.net> wrote: > > I remember a conversation about this subject from many > years ago that never came to any conclusion. Has anyone > discovered any "paint codes" or other definitive descriptions > for the finish on the upper case of an IMSAI? I'm thinking > of having my worst case (multiple scrapes and scratches, > several permanent stains) refinished. > > Bill S. > >

11 years, 3 months

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Hi and what are these?

by cctalk＠v6y.net

Hey everyone, I am new to the list, have a collection of 60's and 70's hardware I am slowly selling, but these have me stumped (I am not an expert in vintage computing): http://imgur.com/0SHTT9A http://imgur.com/lJXbLjf http://imgur.com/uPasyFE http://imgur.com/W3eHes1 http://imgur.com/A5GuF4Z http://imgur.com/Wp2jKOb http://imgur.com/KEiE9It http://imgur.com/okDQVJQ Anyone know what either of them are called or what system(s) they go to? Sometime in the next month or so, I will be auctioning off a complete (working) Data General Nova 2, along with a few other very rare (from my searches on this list) big items. Thanks! -Justin Keogh http://www.ebay.com/usr/jkeogh0

11 years, 3 months

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test-drb