Re: IBM S/32, PDP-11/60+RL01, PDP-11/34, East Lansing MI

> > I'm on the other side of the country or I'd be all over this. Someone > > please rescue this equipment. The thought of it going to the scrappers is, > > well, brutal. Aren't PDP-11/60s kind of a rare beast? > > > > - Earl > > > > yes, yes they are. ug. I've contacted Greg, haven't heard

Re: PSU protection with resettable polyfuse

> Any downsides to resettable polyfuses? If you hit them hard enough, they'll sometimes permanently open, which is desirable anyway but does require rework. I don't remember how they stack up speed-wise, I'm sure it's in the datasheets. Thanks, Jonathan

Re: Floating point routines for the 6809

> Then it's a regional thing. "Scrounge up," or to "scrounge around," is certainly commonly used to mean, "find something in a pile of mess" in the southeastern US. Mostly equivalent to "scare up." Thanks, Jonathan

Re: QIX game on PDP-11

> Likely a J11 power Q or Unibus CPU of late vintage. Looks similar to a Mentec KDJ11-B workalike, I don't remember their designation. Onboard RAM and DLV11-J from what I remember... Thanks, Jonathan

Re: PDP-11/20 in Iowa (x3)

> I don't know of MOS memory appearing in 11/20s as built by DEC, but there's > no reason against it. It's just Unibus memory. It wouldn't have to be 4k > either; if you had a 32kW memory card that should work just fine. Indeed, Unibus is Unibus, except when it's MUD :) Thanks, Jonathan

Re: Optical Mouse Pads

Bill, I'd be interested in one compatible with Sun 5 mice -- right now I use a printed paper mousepad when I get out my Sun boxen. If no one else is interested, I'd like one or two of them, and if they're otherwise going in the trash, I know a few people I could give them to. Does $5 each +

Re: DEC wall plates, cables

> Certainly looks like MMJ to me. that was what I searched for as well. If they're MMJ, I'd be interested in wall plates. I've got a few systems that use it, plus I recently picked up a DECHub 90, including two terminal server modules, which of course use MMJ. Thanks, Jonathan

WTB: BYT-8 Computer/Chassis

All, I'm on the virge of making a deal with vintagecomputermuseum on eBay over his BYT-8 he's had up for years. It's still overpriced but I can probably sell the boards out of it and make it a reasonable purchase. I already have a board set so really I just need the empty chassis. Before I

Re: WTB: BYT-8 Computer/Chassis

> Whats the big deal with that? Its no more significant than a Compupro > chassis or a Integrand box in the S100 realm. I just like the size and configuration. I've been looking for one for a while, it seems they were sort of common at one point. They were whitelabeled by Bell & Howell

Re: IBM S/32, PDP-11/60+RL01, PDP-11/34, East Lansing MI

> Ditto for one of the people here who said they'd sent the person an email Whoops, ended up in the spam folder! No, I haven't heard back either. I sent a follow-up and CCed the second address in his email. Provided my office phone number, no reply or calls. Thanks, Jonathan

Re: Aquired PDP 11/23

> Are dectape II tapes expensive? TU58? They're hard to come by, but the good news is you can *emulate* them with a PC and a serial port (or USB adapter). That's how I run XXDP on most of my systems, and pretty much all of the systems I check out for people. You've got a DLV11-J in there so

Info Needed: DATARAM DR-111 PDP-11 Unibus 16KW Core Memory

Looking for any information and/or documentation on DATARAM DR-111 (assembly 61101) 16Kx16 core memory boards for the Unibus. I've got four in unknown condition, one with a clearly destroyed 8T37. I have a large format scanner with ADF and can digitize print sets if necessary. Thanks, Jonathan

Attaching DEC Handles, the Right Way

I'm sure most of you DEC hackers have replaced a broken DEC handle or put handles on a protoboard, and did what I've done in the past: use 4-40 screws and nuts, or pop rivets. Well, I finally came across the right tool for the job, an Indestro tubular rivet set! I cut the head off of a rivet on

Re: Attaching DEC Handles, the Right Way

> It's one of these: > http://www.grommetmachinery.com/stimpson-479-machine.html Glad to hear it was saved from the scrap heap! A very cool machine, reminds me of the manual punch we had to go along with our trip punch at a previous job. > Stu Phillips, a friend of ours did the insertion of

Re: Attaching DEC Handles, the Right Way

> The CP-2 line seems to have the right dimensions for DEC FLIP CHIP > modules (2.43" wide, ~2" rivet hole spacing) and they have them in > natural nylon, which might be dyable, white, and black. > > They are stocked by Digikey and Mouser for under $1 each. Good stuff! Now I know what to use

Re: PDP-8/a cleaning

> I'd just vacuum the card slots and wiring side with a shop > vac with a crevice tool. I really would not get it wet. If > you do this, vacuum all the water off and then dry in an > oven at 100F or so for a day. You can clean the card edge > fingers with an alcohol-soaked paper towel.

Ohio Scientific Universal RAM Board GW-OSI-RAM1

Finished building a prototype mezzanine board and testing with the IM6100 (PDP-8 on a chip) in the 560Z board today. Full writeup: http://www.glitchwrks.com/2017/05/03/gw-osi-ram1-universal-ram There are a couple of tweaks required, but I should be doing a first production run of boards before

Re: Ohio Scientific Universal RAM Board GW-OSI-RAM1

> Is the IM6100/6120 still easy to find? I'dve thought that the supply > was exhausted by now. One of my *US* parts supplier apparently has qty 500 in stock for the IM6100s! With the failure rate I've been seeing, figure at least 350 of them are viable, maybe more. I've also had a bunch come

Re: Need help reproducing a PCB

Mile High Test/Gardien Services in Colorado will scan boards for you and give you ready-to-go Gerbers. It cost around $250 to have an OSI sized 2-layer board scanned (8x10 inches). Thanks, Jonathan On Tue, 9 May 2017 22:46:08 -0500 Jim Brain via cctalk wrote: > I am

Re: BBS software for the PDP 11

> BSD 2.11 should run fine on a 34 or 23 You need split I for 2.11BSD, that rules out the 11/23 and IIRC the 11/34 as well. I want to say 2.9BSD will run though. Thanks, Jonathan

Re: Vaxstation 3100 of odd sort on epay

I keep meaning to stop by the guy's shop in MD and check out some of his DEC stuff. From what I can tell, this isn't TEMPEST shielding, but RF shielding for e.g. lab situations that require a low RF noise floor. It's probably effectively the same as TEMPEST in practice, but seems to lack the

ISO: Solid State Music IO-8 S-100 Serial Board Manual

Just purchased a Solid State Music IO-8, apparently the manual is not available online, and isn't listed in Herb's documentation collection. Anyone have it? Looks like it's eight Intel 8251A serial ports. Thanks, Jonathan

FS: HP 98630A Breadboard Interface Protoboard for HP 9000 Series 300/200

link: http://www.ebay.com/itm/272663229522 Looks NOS, definitely never had anything soldered in the prototype area. Thanks, Jonathan