- 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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

7
8
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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, 1 month

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, 1 month

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, 1 month

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, 1 month

6
7
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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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

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, 1 month

1
0
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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 2 months

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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, 2 months

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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, 2 months

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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, 2 months

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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, 2 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, 2 months

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