test-drb October 2005

test-drb@ccmp.vtda.org

264 participants
655 discussions

by ajp166＠bellatlantic.net

> >Subject: Re: Releasing OS/2 > From: woodelf <bfranchuk at jetnet.ab.ca> > Date: Fri, 14 Oct 2005 14:14:24 -0600 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Allison wrote: >> >>What I'd like to see is a comparison of OS/2 to say DRI Concurrent386 >>and Win3.1 or Nt3. I picked the latter two as I know them well. I have >>both concurrent386 and OS/warp 3 but never used them. Maybe I'm missing >>something and I'd like to have an idea of and how practical their use >>would be in the present as part of my PC based supporting systems. >> >> >Lets not forget OS/9 for the 6809 , just for a reality check of >multi-tasking. My original intent was limited to OSs that were operable on PCs. If there is OS/9 for PC then by all means but I'd suspect comparison would be to unix/linux rather than Dos/win. While I'd not mind seeing that I have no real 6809 hardware other than a COCO-II that is sans case. Found it on the side of the road with smashed case but fully intact and operable. While 1+ing the question we can add 8bit multitasking for Z80 other than MP/M to look at. Allison

19 years, 2 months

FW: LARGEST COMPUTER COLLECTION IN THE WORLD (?) FOR SALE

by news＠computercollector.com

Hey folks, last night I recieved the message below. This guy posted an identical message to Erik's www.vintage-computer.com/vcforum page as well. I have no information about the credibility of the seller. It's certainly not the "largest computer collection in the world" but it should be an interesting discussion. ;) - Evan _____ From: INFO at FKI.BE [mailto:info at fki.be] Sent: Friday, October 14, 2005 6:18 AM To: news at computercollector.com Subject: LARGEST COMPUTER COLLECTION IN THE WORLD (?) FOR SALE Hi there, I am selling my complete collection of computers (over 570 different ones). If you are interested in some computer(s) from my collection, just mail me at info AT fki DOT be (replace AT by @ and DOT by .) and I'll add you to the list of possible buyers. I will then mail you back explaining how I intend to sell the computers. As you can see from my 100% positive feedback on Ebay (member ChaosDM) this is not a scam, but a serious sale. I don't want to go through Ebay directly, because listing 570 different items separately would take AGES! Anyway...the list of the collection can be seen here : <http://users.pandora.be/F-242/Computers.htm> http://users.pandora.be/F-242/Computers.htm There are a LOT of very and ULTRA rare items in there For example : A GOLDEN C64 WITH COMMEMORATIVE PLAQUE! A LOT OF ARABIC MSx's A LOT OF RUSSIAN COMPUTERS ETC... Cheers, Dimitri Kokken Belgium

19 years, 2 months

Releasing OS/2

by ajp166＠bellatlantic.net

> >Subject: Re: Releasing OS/2 > From: "Chuck Guzis" <cclist at sydex.com> > Date: Fri, 14 Oct 2005 15:37:43 -0700 > To: cctalk at classiccmp.org > >On 10/14/2005 at 5:11 PM Allison wrote: > >>While 1+ing the question we can add 8bit multitasking for Z80 other than >>MP/M to look at. > >Molecular was running MT software simply by using a CPU card for each user. One approach. I ran a multiprocessor Z80 system back in '81-82 with one difference idle processors (or processors idling) could take on tasks >from the system exec. > >That Durango system (that I'm STILL trying to give away) was designed from >the ground up with MT in mind. Since the 8085 can't do dynamic address >relocation very easily, we simply put the MT facilities in the compiled (to >a sort of P-code) BASIC. File access control and data sharing was a part >of it. Except for the very lowest level system utilities, all programs >were written in it. A 5 MHz 8085 could support 5 users quite comfortably. >Added memory was 1K pages, mapped through 64x9 bipolar RAM. I've done a memory paged 8085 system, interesting. I have to ask, how does all of this fit with the question?: How does OS/2 warp V3 compare to other PC OSs like CDR Concurrnet386 or win3.1? Allison

19 years, 2 months

MPX-16 census

by trag＠io.com

>Date: Wed, 12 Oct 2005 15:25:03 +0000 >From: Gordon JC Pearce <gordonjcp at gjcp.net> >Subject: Re: MPX-16 census >der Mouse wrote: >>>I've never heard of anybody making more than double-sided PCBs at >>>home (I would love to be proved wrong!). >> >> >> I can't *prove* you wrong. But I've spoken with someone who claimed to >> have done it, and when I started asking questions, talked a good enough >> line that I found it believable. As she described it, you need >> epoxy/fibreglass mix, which you cast a thin sheet of. You then sand it >> smooth, copper-plate it, and etch. Slap on another coat of epoxy and >> fibreglass, let it cure, sand it smooth, copper-plate, and etch. >> Lather, rinse, repeat. >> >> The hard part is of course quality control (and plated-through vias, >> which you can get somewhere with by drilling holes before doing the >> last copper-plating). And registration of the layers. But with >> patience and attention to detail...after all, anyone doing this is >> considering time to be worth a great deal less than money, or the job >> would simply be shipped off to a commercial pcb fab house. :) > >It's the sort of thing I can see our Mr Duell doing though. This is a topic that interests me. The most useful sounding site I've found so far is this one <http://www.thinktink.com/stack/volumes/volvi/pcbproto.htm> IIRC, they recommend drilling your boards before etching so that you can use the hole locations to help with your layer registration. They also have an interesting ink and electroplating system to create plated-through vias. (As an aside, I found another site one time where a fellow had replaced the pen in a plotter with a drill and was using it to drill boards with an Apple II(?) driving the thing. <http://rich12345.tripod.com/PCB/> It would be an interesting project if one could make it interpret Excellon drill files.) However, the information on greater than 2 layer boards is thin. They seem to imply that you can etch seperate thinner boards and then laminate them together, but there's no detail on what kind of board would work for this. There's an obscure reference to not fully cured fiberglass or some such. The implication is that, e.g. one could make a total .062" thick board with four layers out of three boards laminated together--perhaps three .020" boards. The two outer boards would be double sided circuit boards and the center would be a separator with plated-through vias and "doughnuts" at the plated-through holes to make contact from one board to the next. I'm curious about what one would need in terms of board or additives to laminate multi-layer boards together. A standard fully cured board isn't going to stick, I don't think. Building multi-layer boards out of raw fiberglass/epoxy mix and copper plating it oneself does not sound like a viable home project. At least, not for me. Jeff Walther

19 years, 2 months

PING: Ashley Carder

by charlesmorris＠direcway.com

I've been trying to contact you... Are my emails getting through or vanishing into the ether? Direcway is notorious as a conduit for spammers and is often blocked without warning, but it's my only option here in the country other than dialup :( -Charles

19 years, 2 months

how_to_build book online

by jack.rubin＠ameritech.net

I finally (re)found my copy of "How to Build A Working Digital Computer" by Alcosser, et al, published in 1967. This is the "paper clips and spools" computer - definitely worth a look - http://www.sideslip.net/digital_compu/ . It's a scan of a copy from a dying book so parts of it are not too pretty but I think its all there. Enjoy - Jack

19 years, 2 months

Releasing OS/2

by ajp166＠bellatlantic.net

> >Subject: Re: Releasing OS/2 > From: "Chuck Guzis" <cclist at sydex.com> > Date: Fri, 14 Oct 2005 19:55:01 -0700 > To: cctalk at classiccmp.org > >On 10/14/2005 at 9:28 PM Allison wrote: > >>I have to ask, how does all of this fit with the question?: > >You asked about Z80 MT outside of MP/M. I pointed out that there's more >than one way to skin a cat. In particular, MT does not have to be an >integral feature of the OS itself. I did not ask about Z80 MT as a direct part of the question on OS/2. In fact any comments made were along the lines of scarcasm while we are talking about OS/2 lets let in the world of other OSs even the 8 bit ones that are not relevent to OS/2. Maybe for once I was too subtle? As to Z80 MTasking OSs there are several but I elected to layer a task executive on/under CP/M V2 as I had it and there was nothing to say it wouldn't work. Its big value was using all those idle cycles waiting for keystrokes. I did it back around '81-2. and it was an interesting exercise in hardware and software. The real question, the one I'd really like to know more about, was and is: I have OS/2warp3 how does it compare to Concurrent386 and win3.1 in the PC realm? I have both OS/2W3 and CC386 but never installed them for no real reason. What have I missed? Allison

19 years, 2 months

Unisys, shame on you

by James＠jdfogg.com

> While surfing the Unisys websight, I found nearly NO mention > of either Burroughs or Univac. One more reason to > like IBM. William Donzelli aw288 at osfn.org > > And what did you expect? I worked for Unisys, and for Sperry > before. I am surprised Unisys is still in business, since > they don't seem to know what market to get into. Can you still buy a system that supports Poll Select? I love that protocol.

19 years, 2 months

Archival storage

by James＠jdfogg.com

> This whole discussion about the volatility of storage reminds > me of a conversation I had recently with a friend who's a > professional archivist. I asked her what medium was used for > archival storage--CD-ROM, DVD, etc.? > > Paper. No ifs ands or buts about it. Sorry to steal your thread, but... I have been talking with my state's historical archiving group. They are very interested in some form of digital media for archiving, and are now aware that paper (and microform) still offer the best solutions. They are back to the issue of digital archiving for a new reason, space. They would like to have some form of high density storage (higher than paper) and they can accommodate a shorter shelf life if they can get it into the 10+ year range. They are exploring a digitization program with long-term remote storage of the original material in a storage facility (off-line storage if you will), and a technology refresh program to re-format the digital storage as mediums change (like the recent move >from CD-ROM to DVD-ROM). Does anyone know if there are optical formats that can reliably deliver 10 year shelf-life? How does one achieve it (different types of cd-r chemistry, using cd-rom, etc)?

19 years, 2 months

Unisys, shame on you

by tradde＠excite.com

--- On Fri 10/14, William Donzelli < aw288 at osfn.org > wrote: From: William Donzelli [mailto: aw288 at osfn.org] To: cctalk at classiccmp.org Date: Fri, 14 Oct 2005 19:19:09 -0400 (EDT) Subject: Unisys, shame on you While surfing the Unisys websight, I found nearly NO mention of either Burroughs or Univac. One more reason to like IBM. William Donzelli aw288 at osfn.org And what did you expect? I worked for Unisys, and for Sperry before. I am surprised Unisys is still in business, since they don't seem to know what market to get into. _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!

19 years, 2 months

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test-drb October 2005