test-drb May 2013

test-drb@ccmp.vtda.org

213 participants
253 discussions

by brian＠quarterbyte.com

I just picked up the Decwriter III that was up on the San Francisco bay area craigslist. Neat young guy had found it set out for the taking on a sidewalk in Berkeley a few years ago & had been using it as a typewriter. That's class. So now I'll break open the maintenance manual. Fans but no lights. There's a flowchart for that. It's missing the 1 and 4 numeric pad keycaps but I'll worry about that later. Otherwise it looks to be in great shape.

11 years, 1 month

LA180 / DecWriter I

by dm561＠torfree.net

----- Original Message ----- Date: Fri, 24 May 2013 13:02:37 -0400 From: Jonathan Gevaryahu <jgevaryahu at gmail.com> Speaking of dec teletypes/old printers, does anyone have one and the means to read out the contents of the firmware roms? The only one I have roms for right now is the LA50 (and only the later roms), and I'm trying to archive all the others (including/especially the rare ones) to make it easier for people to repair these printers/teletypes in the future. ------ Reply: Not particularly rare, but I'm scrapping some LA100RO printers; email me off-list if you want ROM images. mike

11 years, 1 month

Looking for Arraid AEM-1 SMD drive emulator operation info/commands

by bub7734＠yahoo.com

I'm looking for operation information on the Arraid AEM-1 SMD disk emulator. Does anyone have infomation on the operation of this device they can send me? I'm looking any information on the commands used to setup/configure the device through the serial port. TIA, -scott

11 years, 1 month

[cctalk] Re: LA180 / DecWriter I

by bub7734＠yahoo.com

> > > Actually I posted a very brief one here: > > > http://www.youtube.com/watch?v=Ew_HLX2AVC8 > > > > > > Once I have the cover on and the new ribbons etc I will do a better one. > > > >?? Nice!? Wow, that's some serious key echo lag.? Was that to a remote > system > > on HECnet, or something local?? (the caption wasn't specific) > > > >?????????????? -Dave > > > > -- > > Dave McGuire, AK4HZ > > New Kensington, PA > > Yes there is some lag. That is to SIMH running on my local PC. I don't know > the cause but I wonder if it is the serial interface code in SIMH. > > Regards > > Rob Is that a FreeBSD host running the simh? FreeBSD has some strange problems with its serial ports since they went from the sio(4) to uart(4) drivers.?? If you do have FreeBSD, let me know and I'll track down the fix I performed on my system.?? (I'm running serial teletypes to simh running hp2100 and TSB). If it's not FreeBSD, double-check your PC-side settings for bits, parity and stopbits. -scott

11 years, 1 month

My mystery console, revisited

by jon＠jonworld.com

Folks, A while back I posted about a mystery console a FOAF picked up at a DRMO auction. I wound up purchasing an extra one from him for my own use and to help identify it. The internal components are interesting. An 800x600 LCD display that takes XGA/VGA input. An AT-based keyboard. Some of the trackballs are serial mice, and I think the joystick is PC-style joystick. Two photo albums: http://imgur.com/a/tsxCP http://imgur.com/a/t1eS9 I was originally led to believe this kit was US Navy, but after some googling and guesswork I'm thinking its Air Force. The massive multi-pin connector on the back looks similar (but it isn't the same) as the connectors used to the ROLM 1602. Any ideas?

11 years, 1 month

Building extender boards -- finding protoboards w/edge connectors?

by derschjo＠gmail.com

Hey all-- I'm going to need to build an extender board or two for my Imlac in the next few weeks toaid in debugging. (Now that I have the power supplies up and running, there are a lot of stuck bits here and there in the CPU and it'd be really, really useful to have easy access to the chips for testing.) The cards have an 80-pinedge connector (40 pins per side) with a .125" spacing (same as S-100). I figured I'd look fora source of prototype boards & edge connectors with .125" spaced fingers on them and build a couple by hand, but I'm not having a great deal of luck finding the boards. Digi-Key comes close in that they actually have S-100 prototype boards listed, but of course theyhave none instock; this - http://www.digikey.com/product-detail/en/4610/V1111-ND/146808 - is close but has too few connectors. I suppose I could track down an S-100 prototyping / extender board and hack it down to the right size but I'd rather not destroy something. And since I'm only going to need one or two of these I don't see a lot of sense in having some fabricated. Any suggestions on where to find parts for this project? Thanks, Josh

11 years, 1 month

"Build a 32K RAM Board for the PDP-8/e" article published on Tronola.com

by steve＠tronola.com

Hi folks, I'm pleased to announce that we have just published a new vintage computing article on Tronola.com: "Build a 32K RAM Board for the PDP-8/e". You can read it here: http://www.tronola.com/html/ram_for_pdp-8e.html It includes a new look at interfacing memory to the Omnibus. -- Comments and corrections are welcome. Thanks, Steve Lafferty http://www.tronola.com

11 years, 1 month

LA180 / DecWriter I

by jgevaryahu＠gmail.com

Speaking of dec teletypes/old printers, does anyone have one and the means to read out the contents of the firmware roms? The only one I have roms for right now is the LA50 (and only the later roms), and I'm trying to archive all the others (including/especially the rare ones) to make it easier for people to repair these printers/teletypes in the future. -- Jonathan Gevaryahu jgevaryahu at gmail.com jgevaryahu at hotmail.com

11 years, 1 month

Altos 3068 Computer Available

by technobug＠comcast.net

A friend is closing down a business and in the process of cleaning out an attic we came across subject computer and monitor. If interested, email me off-list and I'll put you in contact. ->CRC

11 years, 1 month

3471 terminal

by BHuntsman＠mail2.cu-portland.edu

Hi All! Sorry for the noise, but I just landed my first real 3270-type terminal. It's a 3471, and has a pretty nice keyboard. It unfortunately did not come with the key. Anyone know how to get into the setup mode? Thanks much as always!! -Ben

11 years, 1 month

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test-drb May 2013