test-drb

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101090 discussions

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

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

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

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

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

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

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

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

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

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

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