test-drb February 2017

test-drb@ccmp.vtda.org

153 participants
189 discussions

by brain＠jbrain.com

Seems like someone on list was willing and able to read PAL16L8s and give a try to some PAL16R4s... Is that person still on list and still interested? If so, please contact me off-list. I am trying to restore some C64 carts, and the PAL on my working unit is protected, so I cannot replicate. Jim -- Jim Brain brain at jbrain.com www.jbrain.com

7 years, 10 months

FW: Y Combinator is restoring one of Alan Kay's Xerox Alto machines

by curiousmarc3＠gmail.com

Video of session 6 is up: https://youtu.be/b7yVhMT7tr4 Found our first bad IC. Probably not our last one. On 9/3/16 11:08 PM, curiousmarc3 at gmail.com wrote: Episode 5, still does not boot, but we are starting to follow long why: https://youtu.be/Wr7vDZpniNIr Marc On Jul 31, 2016, at 6:12 PM, CuriousMarc <mailto:curiousmarc3 at gmail.com> <curiousmarc3 at gmail.com> wrote: Next Episode: https://youtu.be/EDw8U1a6s78 http://www.righto.com/2016/07/restoring-y-combinators-xerox-alto-day_31.html Marc From: Curious Marc [mailto:curiousmarc3 at gmail.com] Sent: Tuesday, July 12, 2016 2:01 AM To: Curious Marc; cctalk at classiccmp.org Subject: Re: Y Combinator is restoring one of Alan Kay's Xerox Alto machines Ken's in-depth blog post to go with the previous video http://www.righto.com/2016/07/restoring-y-combinators-xerox-alto-day_11.html On Jul 5, 2016, at 2:46 PM, Curious Marc <mailto:curiousmarc3 at gmail.com> <curiousmarc3 at gmail.com> wrote: Video from yesterday?s work on the Diablo cartridge disc: https://youtu.be/PR5LkQugBE0 Should be up in a few minutes. We were tickled pink to have official representation from PARC (former Xerox Parc) at the session. Marc Ken?s new post on the monitor repair to go with my previous video. http://www.righto.com/2016/07/restoring-y-combinators-xerox-alto-day.html Al Kossow got us a new CRT tube, so we are probably going to try that this week-end. Marc Latest entry from Ken Shirriff, trying out BCPL (ancestor of C). On the emulator, not yet on the real machine: http://www.righto.com/2016/06/hello-world-in-bcpl-language-on-xerox.html Marc There are only two entries right now: http://www.righto.com/2016/06/y-combinators-xerox-alto-restoring.html http://www.righto.com/2016/06/restoring-y-combinators-xerox-alto-day.html Marc

7 years, 10 months

New batch of pdp8 OMNIBUS to USB interface! Please Read and react!

by hachti＠hachti.de

Hi folks, it has taken a while but I'm now actively planning to shift out another batch of OmniUSB boards. The last batch is sold out for a long time and I've been asked for more from time to time. As some of you might remember, it's a cool device to connect your pdp8/f/a/m/e to the modern world using lightning fast USB. The originial board has it's website here: http://pdp8.hachti.de/projects/omni_usb/ The new board will do the same, perhaps even more. - the USB connector will be replaced by a mini (NOT micro!!) USB connector. - The connector position and cable routing will be improved. - The board will be shorter. But it will come by default with a laser cut acrylic extension that makes it full size again. There will be at least those options to buy: - Kit (board + all parts) - Kit+ (board + all parts, SMT already assembled) Possible: - complete version - Everything soldered and tested. - discount for omitting acrylic extender I cannot guarantee that I can deliver fully assembled boards (regulations) and would be able to do that only if there's a reasonable number of interested buyers. If have set up a doodle poll to get a realistic picture of the interest in the board/kit/device: http://doodle.com/poll/d7y524mvyfezqp9w PLEASE take the minute and fill in your name (ideally that I can recognise you) and check the options which most precisely match your demands. PLEASE be as honest as possible as I will base my decisions IF and for which PRICE I can run the show. Thank you!!! Kind regards Philipp :-)

7 years, 10 months

DISSPLA fortran source anyone?

by rdawson16＠hotmail.com

The scientific graphics software package, written By Ian Hirscholn. Later sold to Coumputer Automation. He ported it to the PC later, with his company ISSCO. They also made a neat bitslice machine to run it, the Portable Graphics Mainframe, I had one for a bit, I was their rep. Anybody have anything on this beast, it was amazing. Randy

7 years, 10 months

DATARAM DR-118 docs?

by w2hx＠w2hx.com

Hi folks, Looking for documentation on the DATARAM DR-118 16Kx12 core memory for PDP-8/e. I have the documentation on the DR-118A which is for the PDP-8/a. It is probably similar, but would love to find the right version. Anyone have such thing? Thanks Eugene

7 years, 10 months

Sun E10000 Historical Enquiry

by jplist2008＠kiwigeek.com

Greetings to all; All this talk of favourite machines and getting into the hobby has gotten me amped up to work on my E10k. The E10k was always the "coolest" machine for me - largely due to the timing of my entry into the industry. I recently read Tracy Kidder's Soul of a New Machine and was pondering the history of the E10k and its start in Cray Research Inc and its subsequent sale to Sun. The asset transfer that must've taken place and then how Sun turned it around to make it a Sun product and made its impact on the market has to be a fascinating story too. I would love to talk to anyone who was involved in the development, transfer, initial rollout and support of the E10k - from both CRI's and Sun's perspective. Heck, I'd be fascinated to talk to anyone who purchased the machines during their lifespan (1997-2001) and could tell me what you used them for. If you only know of someone that was involved that you might think would be interested in talking to me, please pass my eMail address on. Maybe if I get a big response I could put something together, if there was suitable interest of course. But at this point, I'm mostly just fascinated for myself. Thanks to all! - JP

7 years, 10 months

Free to a good home: Honeywell/Bull DPS-6 workstation / server (Seattle, WA)

by kevinowens1＠gmail.com

do you still have this ? thanks Kevin

7 years, 10 months

3D scans and sounds

by lars＠nocrew.org

Hello, I'm grateful that there are plenty of pictures of classic computer. However, I want more. 3D scans and sound recordings. Has anyone attempted to do that?

7 years, 10 months

LGP-Resto Update

by coryheisterkamp＠gmail.com

For those curious about the status of the LGP-30 restoration, I?ve got a blog up with the latest. http://radar58.com/LGP30/ The power supplies are stable, the blower unit was overhauled and new bearings installed, all the modules have been recapped. I had a noisy bearing in the memory drum, thankfully it was one that could be accessed through the pulley end and I was able to inject fresh grease. There were burnt contacts in one of the open frame relays in the sequencer unit leading to intermittents. I found a NOS 3-pole version with fresh contacts and transferred those over yesterday and we now have correct startup. The ?digital display? chassis has been worked over with fresh resistors and this has made the controls much more responsive. The Flexowriter is behaving and the 6 associated FF's in the machine respond to keystrokes. All-told, I?m at the point of troubleshooting the scope display- I have a sad, unintelligible, wavy line, but I believe retrace is derived from the system clock track on the drum, so that?s my next investigation. Both vertical and horizontal boards have been rebuilt and tubes substituted with no change. -C

7 years, 10 months

New batch of pdp8 OMNIBUS to USB interface! Please Read and react!

by jnc＠mercury.lcs.mit.edu

> From: Jon Elson Dave Bridgham and I have been using KiCAD for our stuff, and we're pretty happy with it. Here are a few bits: this is just data, I'm not trying to convince anyone to use it - the points about 'complex tools one is already very used to' are very good ones. > I'm most concerned about the reliability of the design rules check > ... > If these checks miss errors, I REALLY don't want to use the package. I'm not quite sure what's covered here, but I have used the checker on my admittedly-tiny projects, and been happy with it. > and layout vs. schematic. Again, Dave has used it to lay out at least one moderately-sized card, and seems to have been happy with the results. > (KiCad seems to still require picking operations from a menu, Protel > has user-configurable keyboard shortcuts that are a big help. Maybe > KiCad has that and I just need to learn them.) KiCAD does have keyboard shortcuts. I don't know if they are configurable. > From: Guy Sotomayor Jr > In terms of community supplied libraries, Eagle has those too and I've > found that by and large they are junk (it's easier/quicker for me to > create a part on my own > ... While I haven't seen a lot of KiCAD contributed libraries (that's > part of the problem) KiCAD came with a fairly large set of user-contributed libraries. For various reasons (including working with archaic parts), I've wound up adding quite a few, but i've usally found it pretty easy to modify an exising part from the libraries, to get what I need. YMMV. Noel

7 years, 10 months

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test-drb February 2017