test-drb March 2010

test-drb@ccmp.vtda.org

182 participants
231 discussions

by rdawson16＠hotmail.com

You guys may already know of this, some perhaps not. All the OS's are there, MSDOS, Concurent CPM, Windows 1 thru 3 Autocad, Orcad, Mathematica, Maple, Matlab Graphics like Dr. Halo Programming languages MASM, Turbo Pascal http://vetusware.com Randy _________________________________________________________________ Hotmail is redefining busy with tools for the New Busy. Get more from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID27925::T:WLMTAGL:ON:…

14 years, 4 months

Finding datasheets on the net (was Disc analyser news update)

by shoppa＠trailing-edge.com

Dave wrote: >Ben wrote: >> And if you are lucky the fifth or sixth hit is a *free* pdf. > I've never seen one that required payment, but I've seen plenty of > places that SUPPOSEDLY have the PDF you're looking for, but actually > don't. Most commonly, I find places that try to sell me parts that haven't been made for 30 or 40 years, but the page is simply a numeric list of every part in some huge number range. How can it be a viable business model to buy google advertising to sell parts that you do not actually have? My guess: counterfeits, esp relabeled counterfeits. Or maybe the advertising cost is so completely negligible that they can afford to put up ads for things they don't have? I remember "too cheap to meter" but that's ridiculous. Tim.

14 years, 4 months

Does a Northstar S-100 Bus Horizon Classify as a Classic

by trebor77＠execpc.com

1. Re: Does a Northstar S-100 Bus Horizon Classify as a Classic > Message: 1 > Date: Fri, 19 Mar 2010 13:05:18 -0400 > From: Dave McGuire <mcguire at neurotica.com> > Subject: Re: Does a Northstar S-100 Bus Horizon Classify as a Classic > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Message-ID: <2C8AA3F6-864D-4777-A584-466024E6A276 at neurotica.com> > Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > On Mar 19, 2010, at 1:12 PM, Robert J. Stevens wrote: > >> I have a set of the Steve Ciarcia Circuit Cellar Magazines if >> Anyone is Interested >> Volume I originally cost $8.00 >> Volume II originally cost $12.95 >> Volume III originally cost $16.95 >> Volume IV originally cost $18.95 >> WOW >> Wow indeed. >> Are these in fact "Circuit Cellar Ink" magazines, or are they the >> compendium of Ciarcia's Circuit Cellar columns from BYTE magazine? I was not aware that there were Different Publications of his Work. These are indeed compendiums from BYTE. I guess I should have called them Books. But the are in Pristine Condition Looks like they have never been opened MUCH Bob

14 years, 4 months

Just another homebuilt TTL machine

by jdr_use＠bluewin.ch

I have put online some pictures and schematics of a rather pathetic homebuilt TTL machine I constructed around 1985 Specs 12 bit wide, 8K ram, 256 word hardware stack. CPU 3 x 74181 Hardcoded instruction set. No blinkenlights, but, almost as good, 4 nixies as display. Since I just cannot be bothered to make a proper homepage, I have just put everyting on my FTP server. Find the goodies here : ftp://jdreesen.dyndns.org/ftp/T3 Jos Dreesen

14 years, 4 months

Disc analyser news update

by julianskidmore＠yahoo.com

Hi folks, > melamy at earthlink.net wrote: > > if you want specs to programming microchip ics, go here... > > > > http://www.microchip.com/stellent/idcplgIdcService=SS_GET_PAGE&nodeId=1407 > I was under the impression that the FLASH specifications didn't cover > the ICD hardware, but there you go... > But they're handy anyway. I've got a Maplin PIC programmer kicking > around somewhere -- the original software only programmed the 16C84 Despite the horrors of programming PICs; they do have at least one redeeming feature here - they're genuine classic architectures, being designed in the mid-70s for General Instruments ;-) http://en.wikipedia.org/wiki/PIC_microcontroller#History -cheers from julz @P

14 years, 4 months

home brew S-100 PCB manufacturing order

by lynchaj＠yahoo.com

Hi! I am getting ready to make another manufactured PCB order for some S-100 PCBs. These are the S100Computers.com and/or N8VEM boards. These are the S-100 regular prototyping board, S-100 backplane, S-100 buffered prototyping board, S-100 IDE, and S-100 ASCII keyboard. If you are interested in getting in on the S-100 board order please contact me. Thanks and have a nice day! Andrew Lynch

14 years, 4 months

Old DEC Power Control 861C

by icipasla＠gmail.com

*Many thanks, I found a leaking capacitor just as you have described. I've ordered new ones and will soon be able to replace it. I'll let you know if that fixes the problem (It should!).** Normand *>* Old DEC Power Control 861C Hi, *>* *>* looks like I am not getting the posting in my e-mail but my messages do get *>* posted. * This issue came up a few months back. Apparently gmail filters the replies to your own messages somewhere (and not to somewhere sensible!). Perhaps somebody else can rememebr the details. >* *>* I found this replyto my previous message by Tony Duell *>* <cctalk%40classiccmp.org?Subject=Re%3A%20Old%20DEC%20Power%20Control%20861C&In-Reply-To=%3Cm1NM4jS-000J3uC%40p850ug1%3E>in *>* the archives. *>* *>* To follow-up, the 861C emits a crackling noise for the first few seconds (20 *>* or so) and then I can hear a relay chattering (very noisy!). *>* *>* Also the light on the front panel is flashing continuously (maybe that's *>* normal.) * old DEC neons tend to flicker randomly (and it's truely random). The basic design is for the mains : Mains in--->filter --->Breaker-+--->Unswitched outs | +--->Contactor (big relay)-> Switched outs The contactor is controlled (in the 861) by a reed relay on the little PCB inside. This has a differentially-wound coil to give the 'ground for on' and 'ground for off' functionality on the 3 pin connector. The reed relay coil is powered by a little transformer/rectifier/capacitor circuit, mostly on the PCB. My first suspicioun is that capacitor. Open it up and look for any electrolytics on the PCB inside. -tony

14 years, 4 months

Disc analyser news update

by melamy＠earthlink.net

go here then... http://ww1.microchip.com/downloads/en/DeviceDoc/51242a.pdf that will at least give you debugging information that Microchip released. Steve "some chap" Thatcher -----Original Message----- >From: Tony Duell <ard at p850ug1.demon.co.uk> >Sent: Mar 19, 2010 2:44 PM >To: cctalk at classiccmp.org >Subject: Re: Disc analyser news update > >> >> On Thursday (03/18/2010 at 12:06AM +0000), Philip Pemberton wrote: >> > >> > You know, there is a reason Microchip released the ICD2, ICD3 and >> > PICKit2 Debug Express. All of the three support in-circuit debugging >> > over the programming pins -- set a code breakpoint (or watchpoint), wait >> > for it to trigger, then dump the program state. >> >> And do those debugger tools run on any OS other than Windows? > >Not that I could see. And the specs that I was pointed to by some chap >here give details on programming the PICs, but nothing on the debugger >commands, so it appers you can't write your own debugging tools. > >> >> > Beats the LEDs-and-switches debugging method, or the "hook a terminal >> > up" trick... >> >> If the answer to the above is No, then it does not beat the "hook a >> terminal up" trick... or an LED trick or plenty of other tricks... >> not by a long shot. > >Exactly. > >-tony

14 years, 4 months

Does a Northstar S-100 Bus Horizon Classify as a Classic

by trebor77＠execpc.com

I have a S-100 N* Horizon that I have been trying to get to run for years. Is there anyone out there running one or have one or Interested in one. I also have a bunch of S-100 Vector Graphic Cards, CPU, Memory, I/O Cards but no FDC's I am looking for any S-100 Serial I/O cards that I might be able to just in a Test Computer setup so I can test some of the Cards I have. Also Floppy disk controllers for the S-100 Buss. TIA Bob in Wisconsin

14 years, 4 months

Monroe calculating Machine

by harrychandler1＠mac.com

Do you still have the Monroe 8 N ? Harry Chandler Monroe Service Manager.

14 years, 4 months

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test-drb March 2010