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101090 discussions

Question about a PDP-11 Rack I would like to sell

by gtaylor＠tnetconsulting.net

On 12/30/19 12:47 PM, Eric Hernandez wrote: > Hi , > > My name is Eric (engr.eric at gmail.com), I'm from Long Beach, California, > USA. I have an original PDP-11 Rack (just the one rack with the Digital > logo and no other components). I absolutely love this Rack and the > vintage logo/sign across the top, but I have to find a new home for > it and I can't bring myself to just craigslist it for it's usage as > a general equipment rack or to just ebay the logo at the top. I was > wondering if anyone here knew where I can sell it to a good home or > what a fair asking price would be for it? Thanks for any insight you > could provide. Cross posting to a wider audience. -- Grant. . . . unix || die

6 years, 5 months

FTGH - S100

by trash80＠internode.on.net

FTGH - S100 This was a rescue (so its neither tested or power up) and some docs came with it so I assume they belong to this machine (see pics). http://koken.advancedimaging.com.au/index.php?/albums/s100-rescue-1/ The machine is located in Mortlake in the south west of Victoria (Australia) and will need to be collected from there. Alternatively I will be in Melbourne (Australia), more precisely Tullamarine, at various times during January 2020 and it could be collected from there. http://koken.advancedimaging.com.au/index.php?/albums/s100-rescue-1/ Kevin Parker

6 years, 5 months

Repairing RL02 disks, directories of RSX11M 4.2 gen packs

by cz＠alembic.crystel.com

Hi! As I work to repair my RL02 collection I need to check and fix the files on the five disks in the original boot collection. Question: Does anyone know which directories/files went on which RL02 disk pack? Goal is to get the packs back to the point where I can do a good old fashioned sysgen again. Thanks! Chris

6 years, 5 months

Mystery mid-70's keyboards

by jules.richardson99＠gmail.com

Hey all, I was wondering if anyone knows what system either of these two keyboards came from: 1) APL keyboard made by Maxi-switch, IC date codes in 1976, p/n 2129-009, keyboard encoder has "NKBD-452 03-004-05": http://www.classiccmp.org/acornia/tmp/maxi.jpg 2) Keyboard branded as Licon 55-500129, IC date codes in 1973 and '74. Has three blank white keys, one blank gray key, and one blank black key, also "home mem", "marg set" and "video rvs": http://www.classiccmp.org/acornia/tmp/licon.jpg I picked up both hoping that at least one would be simple parallel output and so useful for homebrew stuff, but I am curious about what they originally came from. cheers Jules

6 years, 5 months

DEC Rainbow / Pro video on VGA monitors?

by imp＠bsdimp.com

Greetings, I'm trying to find a way to get my DEC Rainbow's monochrome output onto a newer monitor than my aging VR201 (especially since I zapped something in it and my diagnostic efforts to date haven't fixed it). So, I found the bit in the Rainbow docs that said the output was DC Coupled RS-170 signals and to convert to RS-170 (NTSC black and white) I needed to put a 10uF cap inline to make it RS-170. So I did this, and fed it into a generic NTSC composite video to VGA thing, and got only a little joy. The first few lines seem to be missing, then the next few are OK and then nothing else. I tried to google this, but found nothing. My google foo has failed me. Does anybody else have a working setup? Warner

6 years, 5 months

Two dead LK201 keyboards

by paulkoning＠comcast.net

Gentlepeople, I'm doing some work with my Pro 380 over the holidays, but have run into a snag because both my LK201 keyboards are dead. They fail poweron self test -- LEDs stay on and no response to any keypresses. The odd thing is that the circuit board itself seems ok; I had a spare board that tests fine by itself, so I installed it as a replacement control board on one of those keyboards and now it fails. So that suggests there's something wrong with the key array that breaks selftest. I don't understand that because the documentation says a stuck key would produce a selftest pass along with an indication reporting stuck key. And while I know LK201 keyboards don't like spilled liquids, one of those keyboards definitely hasn't been abused that way and I don't see signs the other one has, either. So having both fail the same way is puzzling. Any ideas? I'm considering building a PC keyboard LK201 emulation, should be a fairly simple bit of Arduino code. paul

6 years, 5 months

ODS-1 structure examiner

by aek＠bitsavers.org

Lee was looking for info on RSX ODS-1 earlier this year Looks like he's made progress groking it http://rsx11.blogspot.com/2019/12/opind-rsx11-ods-1-disk-structure-utility.…

6 years, 5 months

Lockheed MAC-16

by jules.richardson99＠gmail.com

Are there any surviving Lockheed MAC-16 machines anywhere? And/or does anyone have a good photo of the front? (All I've been able to find online is the angled shot that's on the wikipedia page, plus a few grainy images >from marketing info). I rescued a couple of panels a little while ago, but all I have are the PCB, switch and bulb-holder assemblies; it might be fun at some point to mock up a surrounding bezel/overlay, but I'd need some good quality reference material for that. cheers Jules

6 years, 5 months

Wanted: 3B2/1000 login!

by web＠loomcom.com

Hi folks, Maybe a long shot, but does anyone have a 3B2/1000 running SVR 3.2.3 that I could get an account on? Specifically, I need one with a compiler installed. There's a publicly accessible one at the Living Computer Museum, but unfortunately there are no compilers or assemblers installed on it at all :( I'm working on adding 3B2/1000 support to my 3B2 emulator, and need to run some tests against a real one to be sure my behavior is correct. All the best, -Seth -- Seth Morabito web at loomcom.com

6 years, 5 months

ORNL ORACLE story

by brain＠jbrain.com

https://www.computerworld.com/article/3490398/no-silent-night.html?utm_sour… Jim

6 years, 5 months

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