test-drb December 2016

test-drb@ccmp.vtda.org

156 participants
199 discussions

Start a nNew thread

DisplayWriter apparently on Craigslist...

by dave.g4ugm＠gmail.com

http://www.vcfed.org/forum/showthread.php?55404-IBM-Displaywriter Dave Wade G4UGM & EA7KAE

7 years, 5 months

PDP-6s at MIT

by jnc＠mercury.lcs.mit.edu

> It great to have such a detailed description of the DM PDP-6. I hope you're not being serious! There was almost no detail there. But... > I suppose that since the DynaMod group got their 10 shortly after the 6, > they may have focused on getting the 10 up and running. Maybe they > didn't bother to make the 6 run in timesharing mode. I think all the DM people are still around - why not ask one of them for more? Probably best to start with Al Vezza, the group leader; I don't have a guaranteed e-mail for him, and a quick Google didn't show a page for him anywhere, but the e-mail address on his WWW resignation note page is the same as the one on his MIT information entry, so maybe it still works. Jack Haverty was in the group for a while early on, too: http://mailman.postel.org/pipermail/internet-history/2012-May/002288.html Another possibility is P. Dave Lebling (PDL). Or Tim Anderson (TAA) if you can't get ahold of him. Noel

7 years, 5 months

6502 code

by dkelvey＠hotmail.com

Hi There has been so much PDP and other stuff lately I kind of feel out of place asking about 6502 stuff. Anyway, I've mentioned on the 6502.org that QuickSort is not always the fastest sort. So I wrote a 6502 assembly sort but don't have a machine big enough to test it on. I've only got my KIM-1 just working. I was hoping someone would like to help me out, possible a Commodore64, maybe even a PET or Apple II. It needs about 24 page zero bytes and about 5K of RAM. It sorts 1K of 16bit integers. Anyway, if someone would like to help, let me know. I've made several passes through the code and believe it to be close to bug free but know I'm bound to have a couple left. See it as a challenge! Thanks Dwight

7 years, 5 months

WTB 12/16MB RAM (MS42-BA/CA) for VAXstation 3100/30

by jacek.greniger＠gmail.com

Hi, Recently I acquired pretty nice VAXstation 3100/30. It has GPX graphics card, two RZ23 disks (one dead, second cause short circuit but after removing tantalium capacitor on +12V line looks to be working) and MS42-AB 4MB memory extension card. Installed NetBSD under SIMH and disk image will be moved to physical drive when I will find one (100MB is not enough). But the bigger problem for me is to find 12MB or 16MB memory extension for this machine. So I'm looking for MS42-BA or better MS42-CA (16MB) card. Maybe there is somebody who is willing to part with it. My location is Poland. Best regards Jacek

7 years, 5 months

HP1631D Logic Analyzer..Software???

by holm＠freibergnet.de

Hi folks, I have an HP1631D Logic Analyzer for some years now und got an HP9121 dual Floppy drive that fits to it yesterday. I've tested the drive, formating disks, storing and reading data ist working :-) While reading the Users Manual of the LA I've found out that besides of storing setup- and configuration data on the disk, there should some loadable disassemblers for the HP1631D exist on floppies.. The Logic Analyzer is very limited from todays point of view but for example an Z80 disassembler where nice to have. Has someone out here such disassemblers (Z180, 8085, 8080, 6809 etc) for the HP1631D? BTW: My unit has an "upgraded from HP1630" printed on the faceplate.. are there possibilities to upgrade it further? More Memory etc? ..same Question for the Dolch (DLI) C100D, there should exist some ROM based Disassemblers and I'm looking fors uch Eprom Contentes. Currently I have additionally two Dolch 64300 with some additional Software here, but the Eproms don't fit in to the later C100D. Thats ugly, since the C100D is much smaller.... Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 info at tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741

7 years, 5 months

HP1631D Logic Analyzer..Software???

by shadoooo＠gmail.com

hello, somewhere around I should have a floppy with disassembler for HP1660 series. I suppose it is useless for 1630... or not? Should I give a look to find it? Andrea

7 years, 5 months

TI 980 software?

by derschjo＠gmail.com

Hi all -- The TI 980B I got from that NWA auction from a month or so ago finally made its way back to my house, and the CPU looks to be in decent shape. I'll probably start working on restoring it after the new year. Bitsavers has ample documentation, but I haven't found much software at all -- I don't suppose anyone out there's got any tucked away somewhere? I've found this: http://www.cozx.com/dpitts/ti980.html which provides a nice cross assembler/linker and simulator so I guess I can write my own :). I was hoping there'd be a bit more to the system than the CPU, but the rack it came in was effectively empty apart from the CPU, a gigantic power supply and an empty backplane and card-cage. There was a stack of documentation included, so now I know that this TI was originally part of an Evans and Sutherland "NOVOVIEW 2500" -- a "Night Only View" flight simulator that used a set of point-plotting X/Y beam-penetration displays (red/orange/amber/yellow/green colors) to simulate a runway at night. (These were the DSI displays that were auctioned off as a separate lot, wish I'd known what they were at the time...) Pretty interesting, a shame all of the cool hardware was stripped out at some point. Based on the printout stuck in the Omni 800 that came with it, this was in use through at least 2000. Thanks, - Josh

7 years, 5 months

ADM-3A Lower case ROM issue

by shatle＠nfldinet.com

-------- Original Message -------- Subject: Re: ADM-3A Lower case ROM issue From: J?rg_Hoppe <j_hoppe at t-online.de> Date: Wed, December 14, 2016 9:00 am To: cctech at classiccmp.org By accident, I just now restored an ADM3 (not the "A")! Lowercase ROM was made with an pin-rearranged 2706 EPROM. Additional RAM was inserted, DIP switches were set: works perfectly. However, with lowercase ROM installed and DIP switches set, but extra RAM missing, the Space "0x20" was displayed as a " ` ". So I think you have an RAM issue. Perhaps cleaning the socketed extra RAM helps? Joerg ---- Thanks - that sounds like my symptoms exactly. I'll check out the RAM. Steve ---- Well, there you go. The sockets for two 2102 RAM chips are empty! Anybody have a couple of these guys they can spare, or a quick pointer on where to buy them? Thanks all, esp. Joerg for the tip! Steve

7 years, 5 months

Odd "endianness" [was Re: RE: Base 64 posts to the list]

by jnc＠mercury.lcs.mit.edu

> From: Rich Alderson > 9-track tapes on the PDP-10 used one of the following encodings: What about 7-track, any idea? I would assume 6 x 6-bit tape frames per 36-bit word, but that's just a guess. Noel

7 years, 5 months

WTB SS-30 FDC

by david＠thecoolbears.org

I've been looking for an SS-30 bus floppy controller for some time now. Examples would be DC2/DC3/DC4/DC5, but I would also be OK with a Pertec or SSB. Anyone have one that they would be willing to part with?

7 years, 5 months

← Newer
1
...
9
10
11
12
13
14
15
...
20
Older →

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb December 2016