test-drb March 2013

test-drb@ccmp.vtda.org

200 participants
326 discussions

by Arno_1983＠gmx.de

Bill Allen Jr <n8uhn at yahoo.com> wrote: > I have a dishwasher sized unisys 9246-7 line printer to give away (...) Sounds great, w/manuals, Centronics being pretty much universal and such. > the printer is located in Alpena MI 49707. Now that's the bad news, This Is America (and across a large body of water from my POV). I once succeeded in having some moderately large piece of equipment (two Aries Research tower machines, which are Sun clones, posted and given away by Sellam) hauled overseas, but that was only because I knew Hans Franke of VCF Europe fame, who had a whole container-load of stuff assembled for shipment over here back then. I don't suppose there is something similar going on at the moment, seeing the overall economic situation? Then I'm probably out of luck here. > with all the talk about printers and the person posting possible pick up > of old gear along his travels, i thought i's post this printer again - i > need the room :) Let's hope it finds a good home anyway. I've still got an option on a Centronics Linewriter LW800 band printer or a Siemens 9045 shuttle printer which might become available locally and I should reserve my space in case I need to rescue _that_. So long, Arno

11 years, 4 months

RS-80 Model 200 memory

by fjkraan＠xs4all.nl

> Hi, > > I have recently received and repaired a TRS-80 Model 200 machine. Woot! > > My query is if anybody has any experience in adding extra memory - I note > that it has some sockets under it for memory expansion, but the recommended > devices are 24k (A ceramic carrier with 3 x 8K chips and some decoding - > Has anybody had experience using 62256 or similar parts? > The M200 reference manual has a diagram of the RAM module. It is just three 8kx8 RAMS and a 74LS138. So with a conversion socket, a 32kx8 RAM will probably work too. http://electrickery.xs4all.nl/comp/m200/doc/TRS-80_Model-200_reference-manu… This type of caramic devices was core business for Kyocera, which made the M100 line of computers. Fred Jan

11 years, 4 months

Most favorite calc of all time was Re: Calculators

by rampaginggreenhulk＠yahoo.com

At this point I'd have to say my dearly departed HP 50G. Loved the look of my 2 semi or entirely dead 49G's. Hated using them though. At some point I really want a 48cx. At that point I'll probably consider my collection complete.

11 years, 4 months

Slide Rules

by barythrin＠gmail.com

At the antique science and retro-tech show they have the international slide rule competition each year. Not sure if they're mostly collectors or daily users but seems an impressive feat these days. Given i think the competitors are mostly the same appropriate age as well. Be fun to see someone young come in.

11 years, 4 months

Raspberry Pi

by c.murray.mccullough＠gmail.com

Message: 25 Date: Thu, 28 Feb 2013 09:45:17 -0700 From: ben <bfranchuk at jetnet.ab.ca> To: cctalk at classiccmp.org Subject: Re: Raspberry Pi Message-ID: <512F899D.2020803 at jetnet.ab.ca> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 2/28/2013 9:19 AM, Liam Proven wrote: On 28 Feb 2013 15:07, "ben" <bfranchuk at jetnet.ab.ca> wrote: On 2/27/2013 5:34 PM, geneb wrote: On Wed, 27 Feb 2013, Tony Duell wrote: I don't know how that got sent half-done! Problaby becuase you are using some modern device.... Why don't you create a device with the equivalent (at least) abilities of the Raspberry Pi, but with your "enhancements" and sell it for $35. Until that happens, I suggest you sit down, shut up and quit being a cranky tonker. g. I disagree here. That is mass market prices. Yes, of course. That is the entire point of the exercise. How small & cheap can one make a reasonably modern computer that can surf the web and run modern graphical programming tools such as Scratch. The answer is, ?25 - and I think that is pretty impressive. I want a computer *Done* right. HP calculators ~ 1975 was the last computing device I have seen done right. What does that mean? Build quality doesn't really enter into it. It's a single, credit-card sized PCB. It has an under-specified processor & an over-specified graphics chip, but they are what was available cheaply from the day job of the designers. It's not as open as I'd like. But for the money, it is stunning. What would you have done differently? Bear in mind the price point. Equal or lower price only. What would you change? That "low price is best trend" I would change. For me a modern programing tool is "text editor" and 80x24 text screen on 15" display. Explain to me why a cheap PC in my home can't keep up to the net (windows 7) and a credit card computer can do better for surfing. Ben. "Anyone can build a fast CPU. The trick is to build a fast system." Seymoure Cray ****************************************************************************************************** Past and the future of computing is forever changing as what we believe to be true of the past isn?t always right. Something comes along and revision is necessary. One more thing; I apologize for bringing Computing the old way - Is it a thing of the past? but I have to add this: Is the Raspberry Pi something we want to experience? Can we teach kids how computers work today? Is there a need to do this! As far as I can determine they want them to work when they turn them on; not to know how they do something! Just do it! That?s their attitude and mass-marketers know this. Sorry about this rant. I?ll add this: No Internet; no multi-media may be what people want: A 1980?s computing technology where word processing, spreadsheet(ing) and database(ing) is just what many want! Here are three quotes that sum up my view: Pliny the Younger wrote: Historia quoquo modo scripta delectat. History, however it is written, always pleases(!). And paraphrasing Gotschke, the microcomputer was pre-determined, ?unfolded as by fate, as by a biological metamorphosis?. And finally, Ted Nelson, of Computer Lib fame, writes: ?The strange thing is that all of this took so long(development of the personal computer) and then happened so suddenly.? Murray--

11 years, 4 months

Most favorite calc of all time was Re: Calculators

by wlewisiii＠gmail.com

On Tue, Mar 5, 2013 at 12:00 PM, <cctalk-request at classiccmp.org> wrote: > From: Ian King <IanK at vulcan.com> > Recently, I bought another 48SX for my middle-school-age daughter. She > loves freaking out her fellow students - and the teachers - with her RPN > skills. That's MY little girl! - Ian Heh. And tying this back to another recent thread, my 11yo son has been watching with fascination as I relearn how to use my slide rule (a rather abused Pickett N600-ES). I'm hoping to have him using it too before long. That would surprise a few teachers I think ;) William -- Live like you will never die, love like you've never been hurt, dance like no-one is watching. Alex White

11 years, 4 months

A note about classic computing

by c.murray.mccullough＠gmail.com

I forgot to say from Murray--

11 years, 4 months

Looking for Research Machines 380Z/480Z disk images

by ats＠offog.org

Hi all, Iain Hancock has asked me to pass the following message on to the list: > Hi > > Myself and a few others are collating disks, disk images and programs > for the Research Machines 380z. It's a CP/M machine that was widely > used in UK schools in the early 80's just before the BBC micro was > launched. It provided the first use many British schoolkids had of > micro's and computer programming, and along with it's software played > a very important part in the 1980's uk computer revolution. > > Anyway, there were a surprising number of specific educational and > games programs written for it (and hundreds of games written on it by > schoolkids, inc me ) that are in danger of disappearing with the > dreaded disk-rot. Hence we are trying to locate any Research Machines > disks we can, before it's too late > > Presently we have imaged & extracted about 50 disks worth; they will > go on the yahoo 380z group and an archive site we're setting up, > www.rml380z.org > > Please does anyone here have any 380z (or 480z) disks you might have > picked up along the way? > > We've been imaging them to IMD's and using the normal tools to > extract. Have a script to extract individual files and provide dir > listings so we'll get them up on the site in no time. If anyone can > share images they've done please let me know, or we can make images > here and return disks to you... > > cheers! > > Iain, UK > > PS if anyone can find a copy of an rml basic program "ace invaders", > extra points will be awarded :-) I've dug out a bunch of RM floppies from my collection, and there were a few in Don Maslin's archive that I've also passed on to Iain. We've imaged floppies in these formats (cpmtools diskdefs file) so far: http://offog.org/stuff/rm/rm-diskdefs ... but there are also some RM 8" formats defined in the manuals, which we've not found any examples of yet. It appears that RM used 0x28 as the first byte in their CP/M serial numbers. Thanks, -- Adam Sampson <ats at offog.org> <http://offog.org/>

11 years, 4 months

UNISYS line (band) printer free to good home or collector

by n8uhn＠yahoo.com

I have a dishwasher sized unisys 9246-7 line printer to give away. comes with 5 ribbons,manuals and centronics option. works great and has a clean type band. the only thing i don't have is the punched paper tape loop for the line spacing/form spacing reader. the printer is located in Alpena MI 49707. with all the talk about printers and the person posting possible pick up of old gear along his travels, i thought i's post this printer again - i need the room :) Bill

11 years, 4 months

TRS-80 Model 200 memory

by doug＠doughq.com

Hi, I have recently received and repaired a TRS-80 Model 200 machine. Woot! My query is if anybody has any experience in adding extra memory - I note that it has some sockets under it for memory expansion, but the recommended devices are 24k (A ceramic carrier with 3 x 8K chips and some decoding - Has anybody had experience using 62256 or similar parts? -- Doug Jackson VK1ZDJ http://www.dougswordclock.com/ -< My clocks http://www.vk1zdj.net -< My Amature Radio Activities

11 years, 4 months

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test-drb March 2013