test-drb September 2007

test-drb@ccmp.vtda.org

220 participants
406 discussions

by ajp166＠bellatlantic.net

> >Subject: Re: power brownout logger? > From: Fred Cisin <cisin at xenosoft.com> > Date: Thu, 06 Sep 2007 16:36:29 -0700 (PDT) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On Thu, 6 Sep 2007, Richard wrote: >> So I'm looking for a device (I'm fairly certain I've seen these >> before) that I plug into a wall outlet and it keeps a log of voltage >> sags, brownouts and outages. Then I can use this to build a >> reliability profile of my power company as raw data to compete with >> their b.s. line that its never their fault when my power constantly >> sucks. > >Vertex (who were for a brief time authorized to distribute my XenoCopy) >had such a device. It had a walwart and connected to a PC. >Unfortunately, whenever there were power problems, it would crash and lose >all the data. Therefore, it should only be used on systems with no power >problems. Hmmm. wonder why it never caught on Company the name I remember is DRANITZ made a power logger that could report things liek brown or drop outs, length of disturbance and even things like common mode or neutral to protective ground currents. Handy device and like can be found at surplus equipment shops. Allison

18 years, 1 month

Dranetz (was power brownout logger?)

by aek＠bitsavers.org

The industry-standard device is made by Dranetz and has been around in various forms for decades.

18 years, 1 month

Once upon a time

by James＠jdfogg.com

When one spoke of computer research and manufacture, you were speaking of Massachusetts. And it was all clustered along Rt. 128 (except DEC). Someone made a poster of it. http://boston.craigslist.org/gbs/for/415042460.html Link probably has a limited life expectancy. James - "I seem to be having tremendous difficulty with my lifestyle"

18 years, 1 month

MAC emulation?

by uban＠ubanproductions.com

I have a Powerbook 150 running System 7.? and only really use it for one purpose, which is to run the old MOTU FreeStyle and FreeMIDI tools. My question is if there is an emulation environment available for a PC which provides enough facility to run System 7 (or possibly 8) and these applications which need to talk MIDI via one of the serial ports and a MIDI interface? --tom

18 years, 1 month

VCF X - November 3-4

by sellam＠vintagetech.com

Hey All! Just a quick heads-up that things are starting to roll for the tenth anniversary VCF event this November 3-4. I'm working on some pretty incredible stuff behind the scenes that will be announced in the next couple of weeks. As of now we have about 5 registered exhibits. I'll be posting more speakers to the roster in the next couple days and have several more to confirm that will go up in the next several weeks. If anyone has an idea for a talk or workshop they'd like to give I'd love to hear it, so e-mail me off-list if you'd like to participate. With two months to go things are going to start to move fast, so anyone planning to exhibit at the VCF this year is encouraged to register ASAP. http://www.vintage.org/2007/main/ -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

18 years, 1 month

Second processor cards

by wdg3rd＠comcast.net

> Message: 24 > Date: Thu, 6 Sep 2007 12:24:55 -0700 (PDT) > From: Chris M <chrism3667 at yahoo.com> > Subject: Re: Ancient 8086/80286 unixes? > What was the purpose of offloading in this context? > Simply acceleration? No, I can't think of any "whole > puters" that could get plugged into a pc or at either, > just thought I'd ask. But keep in mind you don't > really need a distinct k/b and screen to do that. > Years later they were quite common. I think it was > Orange Micro or AST that came out w/286 Nubus cards > for the early Nubus equipped Macs. I never bothered to > get mine working, but I'm guessing the environment ran > in a window on the Mac desktop. > Nevertheless I think it would be very kewell to plug > a whole 'nother puter into something vintij. Very kewell. This was discussed in another thread a little while ago. http://www.classiccmp.org/pipermail/cctalk/1997-November/092425.html -- Ward Griffiths wdg3rd at comcast.net Well, if you're gonna buy a ticket on the Titanic, you might as well go First Class. Captain Audie Murphy, Texas Ranger, in _Roswell, Texas_ by L. Neil Smith, Rex May and Scott Bieser. http://www.bigheadpress.com/roswell/

18 years, 1 month

[Free] Old Data Books (Australia)

by hugh＠blemings.org

Hi, Meant to include this in my earlier post - Amongst the other "treasure" I've got a decent sized assortment of old Motorola, Fairchild, Texas Instruments, Ferranti and National Semiconductor Databooks. These are all for chips - analog parts, ECL, MECL, TTL, CMOS logic, Special Function Devices, Memories etc. Date range late 70's to early '90s. If anyone knows of a better home for these than the paper recycling please let me know. My sense is that most of the data is available on the 'net now on the various archives. Thanks! Cheers, Hugh

18 years, 1 month

Belgian computers?

by RodSmallwood＠mail.ediconsulting.co.uk

Not as far as I know, but BARCO are a big Belgian maker of TV's and monitors. They may have been involved. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Ethan Dicks Sent: 03 September 2007 06:09 To: General Discussion: On-Topic and Off-Topic Posts Subject: Belgian computers? I have the opportunity to travel to Gent, Belgium, in about a month, and with all the recent talk of British computers, I wanted to ask the list if anyone knows if there were ever any Belgian-made computers. I'm mostly interested in 1980s micros, but any sort of machines would be germane. -ethan

18 years, 1 month

GALs and PALs (was Re: [Free] Old Data Books (Australia))

by ethan.dicks＠gmail.com

On 9/4/07, Roy J. Tellason <rtellason at verizon.net> wrote: > On Tuesday 04 September 2007 23:41, Ethan Dicks wrote: > > Hope that illuminates more than obscures, > > Sure. I have a bunch of PALs around, mostly pulls from a bunch of XT-class > machines that Zenith made, and it's debatable whether there will ever be a > use for them. Indeed. You might check for "PALCE" - those are CMOS PALs that _can_ be reprogrammed. Bipolar PALs by MMI and other vendors are strictly OTP. You _could_ poke around the PAL with a signal generator and a logic analyzer/logic probe/VOM/O-scope and divine the internal programming, but, honestly, blown PALs are rarely useful out of their original context. The only use _I_ have ever had for them is a pattern to be able to make modifications to an existing device - I've started with PALs for, say, an Amiga 3000, then burned a faster GAL to get rid of video jitter - I was partially successful. I've never tried to take a PAL out of a circuit and re-use it in a new circuit. > GALs, on the other hand, sound like they'be be useful for > all sorts of things. Indeed they are. Bob Armstrong is a heavy user of GALs for the Spare Time Gizmos line of hobby products. In the case of the Elf 2000, for example, you can change the logic equations yourself (he provides the source) and change the memory and/or I/O map - all of the select logic goes through a GAL, so the memory map is mutable. If you are designing your own circuits, a 18 or 24-pin GAL can replace several square inches of TTL, with the benefit of being able to make changes later that don't involve cutting traces and adding blue wires. You lose the ability to poke around in the middle of select circuits, and to make substantial changes, but it all depends on what your goals for the project are if that's a worthwhile tradeoff or not. You do have to start with a GAL programmer, though. Not all hobbyists have them, so if you make a product to sell, as Bob does, you should consider selling programmed parts for those that can't burn their own. > I should probably seek out some data on these parts, > or even a databook, somewhere. Got any pointers to specific numbers? The two most common parts I've worked with are the 18-pin Lattice GAL 16V8 and the 24-pin Lattice GAL 22V10. There's also a 22-pin GAL 20V8, and I do have a few pull, but I've never run into a hobby project that uses them. I would expect to pay $1.25 for small quantities of 16V8s and up to $3.50 for small quantities of 22V10s. Bargains can be had, but to be honest, when I see 22V10s for under $2.00 each, I tend to buy a few. They aren't as easy to find cheaply as 16V8s. One type of occasional bargain are surplussed already-programmed parts. Just throw them in your programmer, erase them, then you are ready to go with only a couple of burn cycles ticked off their lifetime. AMD also makes (made?) the PALCE line of PLDs. They are pin compatible with GALs, and should program in the same programmer as a GAL. I do not know if there are any substantial technical advantages of PALCEs over GALs or not. In general, for non-modern circuits, a GAL is going to be fast compared to layer after layer of TTL. For example, 15ns GALs are not particularly fast or expensive. 15ns would be a problem for a multi-gate address select circuit for, say, a 6502. Fortunately, with 1MHz and 8Mhz designs and such, speed really isn't a factor, but it's nice to know how much slack you have in your design. You can start here for technical details... http://www.latticesemi.com/products/cpldspld/gal.cfm -ethan

18 years, 1 month

After Next Question

by mtapley＠swri.edu

...and once you have an account set up... use NeXTAdmin/Hostmanager (click on the local.. menu item) to set up your ip address (no DHCP, sorry). ftp to ftp.peak.org, login as anonymous cd /pub/next-ftp/next browse away. Recommended: /apps/internet/www/OmniWeb gets you a web browser, which you can then use to hit http://www.distributed.net go to Download, then "Official Distributed.net clients", and you can pick up the current NeXT client and start crunching Optimal Golomb Ruler candidates. You need never waste another 68040 clock cycle! -- - Mark, 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

18 years, 1 month

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test-drb September 2007