test-drb

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101090 discussions

by billdegnan＠gmail.com

I am heading to VCF West after a stop over in San Fran today...I am looking forward to meeting up with everyone. I will be there all day Friday as a set-up volunteer, Sat and Sunday morning. I was at the last VCF before it was called "West" ... it's been too long. Bill -- @ BillDeg: Web: vintagecomputer.net Twitter: @billdeg <https://twitter.com/billdeg>

10 years

Livingston PortMaster 2e

by brain＠jbrain.com

No questions, and nothing of interest, but a quick story of success. Not sure if PortMasters are on topic or not, but I picked a 20 port unit up at VCF-SE #2 in 2014 and it has sat on my shelf for 2 years as I tried to find a large block of time to get it working. Having never used a unit in the past, I somewhat dreaded the learning curve. Circumstances forced it to be moved, and I thought last night, instead of just putting it back, I'd try to get it going. Grabbed a null modem cable, gender changer, plugged into port 0, fired it up, started a term, and almost immediately got to a prompt! A quick dload of the PortMaster config guide, logging in as !root without a password, and I was in. Some of it was luck (the Port 0 was in console mode, and my term just happened to be at 9600 bps, 8N1), but having the docs easily accessible and not requiring a special Windows App or some other nonsense was half the battle. 20 minutes later, I had the unit configured to accept incoming direct connections from old equipment, with my userid set to no password with functionality to prompt for the server name upon login. That was awesome. On the other hand, after the 2e was up, I started investigating the AWAN 3883 Terminal Server I had lying here. Web sources and config guides kept pointing me to a Windows App to configure, and it looks to need adapters to connect to RS232 (not as big a deal, but still a irritant), so I put it in my pile to give away. Jim -- Jim Brain brain at jbrain.com www.jbrain.com

10 years

8 inch disks - help needed identifying format

by denise.devries＠flinders.edu.au

Thanks Rik and Eric for your information. BTW it was the HP Museum who directed me to this list. Denise

10 years

TRS-80 Trash Talk - Live Episode

by pete＠pski.net

We?re going to be recording a live episode of TRS-80 Trash Talk next Saturday, Aug 13th at 9pm EDT. If you?re into any of the machines from Tandy Radio Shack then stop by and join the fun. https://www.facebook.com/events/1044642265619305/

10 years

TRS-80 Trash Talk - Live Episode

by COURYHOUSE＠aol.com

I am up for some 100/102 talk! That unit is actually a big interest as not only are they vintage computers, but they fit in another of our displays, "The tools of the journalist" . As a matter of fact we are looking for another to go in the display in our university's journalism college we have offsite.. It does not need to work just look nice! There RS Computers were a great tool to remotely post stories... and the 100 fit in any carry on bag! let us know if there is a unit you can share! Ed Sharpe Archaist for SMECC _www.smecc.org_ (http://www.smecc.org) In a message dated 8/7/2016 4:49:13 P.M. Pacific Daylight Time, drlegendre at gmail.com writes: What sort of stuff do you tend to cover? My interest in Tandy / RS machines is mostly limited to the Model 100/102 machines, with which I have some familiarity. The Model 100 line are my "favorite" of the early pre-PC / DOS portables. The dang things are just so friendly and usable.. and what kind of modern laptop / netbook boasts a full-stroke keyboard and 30+ HR battery life? They have some seriously practical features, and the small screen & RAM space isn't really all that limited with the programming conventions and ethos of that era. On Sun, Aug 7, 2016 at 11:01 AM, Peter Cetinski <pete at pski.net> wrote: > We?re going to be recording a live episode of TRS-80 Trash Talk next > Saturday, Aug 13th at 9pm EDT. If you?re into any of the machines from > Tandy Radio Shack then stop by and join the fun. > > https://www.facebook.com/events/1044642265619305/ > >

10 years

SWTPC 6800

by vintagecomputer＠bettercomputing.net

Okay so.. I decided to try the MP-C board out, just for kicks. ?No change. Then I decided to add one of the RAM boards.. the next one up in addresses. ?Got a little bit when I powered on. ?Added one of the old MPM boards.. one that has memory chips all piggybacked on one another. ?Now when I powered up, the system was sending four or five characters at a time, linefeed, four or five characters at a time, linefeed ad infinitum. ?I added the final MPM board.. zero. So.. I think we do have some ram problems.. most likely. ?I'm thinking it would be easiest to concentrate efforts on the socketed RAM boards.. test all the RAM out. ?I'm going to read up on addressing and try to understand a bit better what is going on. ?I'm thinking maybe I need to reconfigure the addressing on one of the boards to match whatever that overstuffed MPM board is set to. Until I get an oscilloscope.. fooling around is about all I can do here. Sent from my Samsung device -------- Original message -------- From: Chuck Guzis <cclist at sydex.com> Date: 2016-08-05 3:55 PM (GMT-08:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: SWTPC 6800 On 08/05/2016 02:15 PM, Brad H wrote: > I think I will have to figure out how to do that.? Additionally I > have one of those PC based oscilloscopes on the way.? I don't know > how to use them 100% but I'm about to learn I guess. :) > > I have one more question for you guys -- I have a few CT-1024 > terminals and would really like this system to work with one of > those.? However, all of the CTs are quite delicate and are set I > think for 7, E, 2 @ 110 baud via soldered jumpers.? I'm a bit > reluctant to try pulling them apart to get in there and fix that.? Is > there a way to change the parity, etc settings on the SWTPC to match > the terminal?? Is it necessary? Well, 110 bps is a bit on the slow side--great for teletypes, not so much for video terminals.?? But you'll have to change the hardwired jumpers--the UART used in the CT1024 is not software-programmable. If this were my unit, I"d probably solder some pins into the pad holes and then either use slide on jumpers or wirewrap to set the characteristics.? That way, when changing things around, you won't be stressing the PCB. Something like this: http://www.ebay.com/itm/10PCS-20CFemale-to-Female-1-Pin-Plug-Jumper-Cable-W… Search on "female jumper wires" --Chuck

10 years

Old High-Noise-Immunity Logic for swap/trade

by jnc＠mercury.lcs.mit.edu

Hi, I have a small stack (~60) of assorted "High-Noise-Immunity Logic" (HNIL or HINIL) chips that I have no use for, and would like to trade for something I do have a use for. These run off like +16V; numbers are 3xxCJ (for xx=03, 21, etc); they were made by Teledyne (the line was later bought out by ITT, whose part numbers for these are ITT3xx; also, at some point passed through Telcom, whose part #'s for the series are TSC3xx). If anyone's interested, let me know, I can send you a list of what I've got. Noel

10 years

Yard sale goodies

by starbase89＠gmail.com

Greetings! Went to a sale this morning and ended up with some neato pieces of equipment. First are two Shugart 8 inch floppy drives ($1 each), a microprocessor training kit ($30) and finally a RCA COSMAC dual 8 inch disk drive ($5). One of the sellers told me to come back tomorrow because he's going to dig out a bunch of other 70s and early 80s equipment. https://postimg.org/image/gyjd3j16p/ I can find no reference to either the microprocessor trainer for the cosmic disk drive assembly online. Any information would be pretty cool to see. Thanks! Joe Giliberti

10 years

PDP-11 prices

by jnc＠mercury.lcs.mit.edu

So that most recent PDP-11/20 (well, technically, a /15) on eBay went for $2200: http://www.ebay.com/itm/191933305000 which was a lot less than the other one _but_ this was only one drawer, only one ME11 memory, no H960, no documentation, no software, no KT11-B, etc, etc. It looks like the high bidder was the under-bidder on the previous one. Noel

10 years

those unable to attend VCFhere is traffic '72 listen while watching videos..

by COURYHOUSE＠aol.com

For those unable to attend VCF here is a Traffic '72 live concert from Santa Monica to listen to while watching videos.. Ed# https://www.youtube.com/watch?v=ocjSc7v83pk

10 years

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