test-drb October 2013

test-drb@ccmp.vtda.org

178 participants
205 discussions

by shadoooo＠gmail.com

Hello. I have two similar Data General One, one with fixed disk, the other is the two-floppy version. Both came with no manual or disk unfortunately. Trying key combinations, I found the CMD-+ and CMD-- way to turn on and off the EL backlight, while CMD-LARROW and CMD-LARROW changes contrast. Any other useful key combination? At power on, the two floppy version doesn't boot (no floppy disks), but it shows a BIOS menu where we could format floppies and use the machine as serial terminal. Nice! I tried to format a floppy (720k or 1.44M) on both floppy, but with no luck, it doesn't work for some reason... :( No way to boot the machine from a previously written 720k disk. I don't understand what the problem could be. Any similar case anybody? The fixed disk version boots nicely the MSDOS still installed on the HD. It seems to work fine. This is a customized version for Allen-Bradley, it has also a big D-sub connector with three rows of pins on the back. It has also a memory expansion in the back slot, with a total of 640K+896K detected at boot (1.5MB total). No way to enter the BIOS menu however... maybe it's missing in this version? Anybody have a scan of the manuals or images of floppy? Thanks Andrea

11 years, 2 months

DEC TSZ07 ..relabeled Cipher 9 Track tape?

by holm＠freibergnet.de

Hi, I know that the DEC TSZ07 9 Track drive is made by Cipher. Does someone here know if there is a near equivalent Cipher Model? The Cause of my Question ist, that I think I have a ugly fault in the PSU, when the Drive is in standby, some parts of the circuit are overheating. Look here for pictures: http://www.tiffe.de/Robotron/TSZ07/ I've repaired the PCB but the parts are still getting hot in standby, because standby no fan is running.. Since the Technical Manual of the TSZ07 contains no schematics, I've looking for the equivalent Cipher model to find schematics of that PSU... Kind Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

11 years, 2 months

PDP11GUI v1.38

by j_hoppe＠t-online.de

Hi all, There's a new version of "PDP11GUI", the graphical development environment for PDP-11's. V1.38 has new features and fixes some bugs, see history.txt Most important changes are - a bug fix in the PDP-11/34 console emulator interface - the Memory Loader supports paper tape images, so you can run all stuff in www.bitsavers.org/bits/DEC/pdp11/papertapeimages/ - there's a Memory Test Windows, which tries to find bad chips with EXAM and DEPOSIT. - COM ports 1..32 are supported, which is necessary for those USB adapters Download from http://retrocmp.com/tools/pdp11gui (Attention: the old stable v1.31 ist still there) If you find new or old bugs, please let me know ... testers are welcome! Enjoy, Joerg

11 years, 2 months

Want a MicroVAX?

by rick＠rickmurphy.net

A co-worker has a MicroVax 3100 (model 40, if I remember correctly, which is somewhat unreliable) that he wants to find a new home for. My VMS interest is mostly satisfied by emulators, so I'm throwing it up for anyone interested. Northern Virginia area. Let me know and I'll hook you up if interested. -Rick

11 years, 2 months

N8VEM PCB cats and dogs

by lynchaj＠yahoo.com

Hi! I have a few remaining "cats and dogs" PCBs looking for a good home. If anyone is looking for the following: 1 ECB ColorVDU (last one!) 2 ECB 6x0x host processor (2 left) 1 ECB MSX cartridge reader (1 left, probably will get some more interest now that N8 PCBs are available) 2 ECB SCG (2 left) (Sound, Sprites, and Color Graphics for TMS9918 video and AY-3-8910 sound) 1 ECB bus extender (1 left) very handy for those with an ECB card cage 3 ECB Cassette interface (3 left!) Kansas City Standard -- read those old data cassette tapes before they crumble to dust! 1 S-100 Parallel IO (1 left!) These are all good boards to build. It would be nice to move some of these which have been sitting here on a shelf all sad and lonesome. They'd like to find a new home on some builders workbench! Thanks and have a nice day! Andrew Lynch

11 years, 2 months

Looking for DECtalk DTC-01 v1.8 and other non-v2.0 firmware roms

by jgevaryahu＠gmail.com

I know that the original vt240-molded-case DTC-01-AA DECtalk had multiple firmware versions, but all units I've ever seen have had the v2.0 (i.e. the final) firmware installed. I know at least version 1.8 existed in older units, and was wondering if anyone here has a DECtalk DTC-01 with firmware 1.8 (or any version other than 2.0) in it. It should speak "Dectalk version x.x is running" when powered up. Bill G. had or used to have a v1.8 unit, but I can't manage to get in contact with him and I don't know if he still has it. At least one other person on usenet had a v1.8 unit where the eproms all bitrotted to blank after a while. P.S. I'm also hunting for DECtalk DTC-03 (decmodem-rackmount) firmware versions; there are at least three, maybe as many as six different firmware versions for those cards. -- Jonathan Gevaryahu jgevaryahu at gmail.com jgevaryahu at hotmail.com

11 years, 2 months

Relic from birth of computer age - Australia's first computer

by trash80＠internode.on.net

May be of interest to some list members - appeared in The Age yesterday. http://www.theage.com.au/technology/technology-news/relic-from-birth-of-comp uter-age-20131001-2uqu3.html ++++++++++ Kevin Parker ++++++++++

11 years, 2 months

accepting S-100 RAM&ROM pre-orders

by LYNCHAJ＠YAHOO.COM

Hi! Now that the S-100 6502 CPU V2 and S-100 Parallel IO PCBs are winding down it is time to get the next PCB order rolling. We need 20 PCB pre-orders so I can make a manufacturing order. The S-100 RAM&ROM board is ready for "production". If you would like to get one or more of these exciting new S-100 memory CPU boards please do the new usual pre-order. I will set aside your board so you get them as soon as they arrive. Here is a link to S100computers.com website with information on the new board. Basically it is an 8 bit/16 bit fusion of the S-100 4MB SRAM board and S-100 EPROM board which addresses major issues with each board. Overall this is a much better and more flexible memory board that should be a general solution for almost all your S-100 memory board needs. http://www.s100computers.com/My%20System%20Pages/RAM&ROM%20Board/RAM&PROM%20 Board.htm The PCBs will be $20 each as per the usual arrangement. Shipping in the US is $3 for a single PCB and $2 for each additional PCB. Shipping internationally is $10 for a single PCB and $3 for each additional PCB. This is for the bare basics USPS first class postage with no tracking or insurance. The builder assumes all risk of delivery as per usual arrangement. Please send a PayPal to LYNCHAJ at YAHOO.COM and I will reserve your board(s). Thanks and have a nice day! Andrew Lynch

11 years, 2 months

Possible one day event in March Flint Michigan

by slandon110＠gmail.com

Im thinking of doing a GreatLakes Springtime Retrocomputing Convention in March, in Birch Run Michigan.. Its about a 4 hour drive from chicago and the tri-state area, even canada All brands welcome and whatnot. I chose birch run because its 20 mins from the airport and they have some of the best restaurants in the area. Show would start at 8am and end at 6pm.

11 years, 2 months

Collection to sell

by jlw＠jlw.com

There's a chance that the Sun 4/260 in the collection was once mine. I had it between about 1993 and 1997, in Mountain View, CA. I eventually grew tired of the noise and bulk sitting in the dining room, and offered it to interested parties. Barry came by to pick it up, along with the Fuji tape drive, and a loose SMD drive or two, plus the 4119 color monitor and about 50 feet x5 coax to put the monitor far away. He had an online museum that he was going to put it in, somewhere in the Santa Cruz mountains. I don't see the SMD controller in those 4/260 pictures though, and I didn't take the SMD pedestal when I got the whole machine in a fire sale for five bucks. I'm pretty sure I don't need it back. :-)

11 years, 2 months

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test-drb October 2013