test-drb October 2005

test-drb@ccmp.vtda.org

264 participants
655 discussions

8" floppy system needed to recover old game data

by Kieron.Wilkinson＠paretopartners.com

> -----Original Message----- > From: Nico de Jong > > Sorry, Denmark.... Ah, oops. And there is me always using the UK acronym... :) > He could use DHL, they are very reliable. > I dont think anyone is going to log a conversion system to I'm afraid I am not very familiar with CPM systems. Could you please tell me why a conversion system is needed? Didn't they use similar FDC chips? I (perhaps naively) assumed it would be some sort of a NEC765-derived one and we could get a simple track-by-track dump... > the US. It would be cheaper for him to take a plane to > Denmark, and have a nice weekend in Copenhagen, while I > hopefully do the job. While this is true, the problem we have is that although we have convinced the ex-developer to let us help them preserve this data, it will be very much harder to get them to go out of their way to get it done. This is the reason I was trying to get somebody local to them to help us do it, even though they do treasure it. It's a difficult situation for sure. I'll try again on the mailing of the media, but it will probably have to be a last resort. > The only "local" one I can think of from the top of my head, > is Sellam Ismail Ah great. Well if he does not reply to this thread, I will send them a mail. Thanks! Kieron ============================ Pareto Investment Management Limited is a Mellon Financial Company. Pareto Investment Management Limited is authorised and regulated by the Financial Services Authority (Firm Ref. No. 416024), and registered in England and Wales with Number 03169281. Registered Office: Mellon Financial Centre, 160 Queen Victoria Street, London EC4V 4LA, United Kingdom. Pareto is the registered trademark of Pareto Investment Management Limited. This message may contain confidential and privileged information and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorised. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator and then immediately delete this message.

19 years, 2 months

8" floppy system needed to recover old game data

by ajp166＠bellatlantic.net

> >Subject: RE: 8" floppy system needed to recover old game data > From: "Kieron Wilkinson" <Kieron.Wilkinson at paretopartners.com> > Date: Thu, 06 Oct 2005 12:57:36 +0100 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > > >> -----Original Message----- >> From: Nico de Jong >> >> Sorry, Denmark.... > >Ah, oops. And there is me always using the UK acronym... :) > >> He could use DHL, they are very reliable. >> I dont think anyone is going to log a conversion system to > >I'm afraid I am not very familiar with CPM systems. Could you please >tell me why a conversion system is needed? Didn't they use similar FDC >chips? I (perhaps naively) assumed it would be some sort of a >NEC765-derived one and we could get a simple track-by-track dump... No. the 765 was available for sale in late 1980, CP/M systems were 3+ years old by then. Even after that point the 765 was not the common part used for CP/M systems. That a PCism. CP/M systems were largely a common coperating system a that allowed for diverse hardware by way of a BIOS that the user or manufacturer could configure for that hardware. There were many different disk systems, formats and in the games space deliberate attempts to make the disks uncopyable by standard systems. >While this is true, the problem we have is that although we have >convinced the ex-developer to let us help them preserve this data, it >will be very much harder to get them to go out of their way to get it >done. This is the reason I was trying to get somebody local to them to >help us do it, even though they do treasure it. What you need is a CP/M familiar person here (actually close to the developer) in the usa and the data once extracted can be shipped via the internet. Systems that convert formats are common enough for people that actively collect and restore. >> The only "local" one I can think of from the top of my head, >> is Sellam Ismail IF its in San Fancisco hes' loads closer than me (3000 miles!). Allison

19 years, 2 months

8" floppy system needed to recover old game data

by Kieron.Wilkinson＠paretopartners.com

> Re: Nico de Jong > Do you have the name of the CP/M system? I am afraid I don't. However, I will try and find out, asap. > I have 120+ CP/M formats in my conversion system, so it > _could_ be an easy job. Wow. I did not consider that there was so many! If it is easier to simply take an image of the disks somehow, this is perfectly acceptable, and we can extract the files later. Of course, in this case it might be a good idea to take multiple reads just in case... > I'm located in DK Is that Dakota? Is that a long way? I'm pretty sure the person who has the disks are not going to be willing to send them by post. They are very precious - being the only copies of this stuff in existance. Thanks! Kieron ============================ Pareto Investment Management Limited is a Mellon Financial Company. Pareto Investment Management Limited is authorised and regulated by the Financial Services Authority (Firm Ref. No. 416024), and registered in England and Wales with Number 03169281. Registered Office: Mellon Financial Centre, 160 Queen Victoria Street, London EC4V 4LA, United Kingdom. Pareto is the registered trademark of Pareto Investment Management Limited. This message may contain confidential and privileged information and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorised. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator and then immediately delete this message.

19 years, 2 months

transputers

by RMeenaks＠OLF.COM

Come to my website at http://www.classiccmp.org/transputer. I havent set up a ST20 site yet, but what are you looking for? Datasheets, etc, etc.. Ram > -----Original Message----- > From: Brad Parker [mailto:brad at heeltoe.com] > Sent: Thursday, September 29, 2005 3:41 PM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: transputers > > > > Hi, > > I find myself, in real work, for money and everything, > working on an ST20 micro. > > Little did I know it was a transputer :-) > > I recall seeing some messages here from people who seemed to > be interested in transputers. > > I'm curious - is there any nice "hints & kinks" on the web > for transputers, or a good book or tutorial? It's not that > complex but I am curious to hear from anyone "in the know" as > it where about ways to make them go fast... > > (it's so rare when my hobbies cross my day gig. note to self... :-) > > -brad >

19 years, 2 months

CRT implosions (was: Re: "screen mold")

by ajp166＠bellatlantic.net

> >Subject: Re: CRT implosions (was: Re: "screen mold") > From: William Donzelli <aw288 at osfn.org> > Date: Wed, 05 Oct 2005 15:34:56 -0400 (EDT) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Fact Check... > >> Tubes typical of that era was the smaller electrostatic types and 5up1/7 >> were of the era. > >Electromagnetic (and combo) tubes were just as common starting in the >1940s. If a tube had a P7 phosphor, it was likely intented for PPI duty, >and nearly all PPI scopes of the era were rotating yoke types. There were a few that used elctrostatic that were not PPI but time domain. There were a variety of radars used some very crude appearing by most standards for display. A few the CRT was simply a scope doing TDR on the radar pulse and it was the operators duty corrolate the antenna position with the displayed reflection. There was at least one airborne system that used two smaller tubes to display azmuth and elevation based of one transmitted source and two seperatly recived returns. By late war there was considerable evolution in radar types. There were also airborne landing aids systems that were crt based as well. I used to see them on Cannal st NY back when 1$ was a good hours pay. Fun stuff really as much of it can be duplicated in miniature using current tech at 10ghz. >> The aviation tubes used for that airborne radar were >> surrounded by a mumetal shield to keep mag fields out and the graticule >> was far thicker than the tube. > >Graticle thickness not far thicker than the tube face in many >instances. Most actually were probably thinner. They varied from 3/16 >inch to just a very thin sheet, maybe just a few thousandths thick. Yes they did. But not all. Airborne systems were prone to mechanical shock and that was a known thing. Having a radar fail was nearly as serious as damaging the trained operator. >> Tubes larger than about 10" >> didn't appear much till the mid 50s. > >12 inch tubes were very common before 1950. Just about ever World War 2 >Allied air search radar had one (or in the case of late war types, two). key words, "appear much" as in not commonplace but did exist. Even the military had inerta. Fixed service. Airborne were space limited as well as power. Allison

19 years, 2 months

CRT implosions

by technobug＠comcast.net

On04 Oct 2005 20:39:39 -0400 Bill Pechter <pechter at gmail.com> wrote: > [...] > > An uncontrolled failure could be different. I've seen one old 1960 > vintage tv blow up and the glass was retained by a plastic or glass > sheet across the black and white tube. > > Never saw anything like a real accident, though. > > Bill > > In the mid 50s they used to show on TV a tape of a ball on a string launched into the face of an unprotected CRT. The neck proceeded through the faceplate and embedded in a 1/2" piece of plywood. Definitely made one careful when playing with the old sets. CRC

19 years, 2 months

Texas Instruments 980A minicomputer??

by tosteve＠yahoo.com

Hmmm, Someone has a Texas Instrument 980A Computer, with two Diablo Series 30 Hard Drives, circa 1972, to offer. Do I want it?? __________________________________ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com

19 years, 2 months

IRIS update/PM2 questions

by compoobah＠valleyimplants.com

Took a few looks at the IRIS, and it seems to be a Frankensiggy. 31xx graphics. 2000 series processor (PM2/PM2M1/SKYFFP, 68010) with ST-506 drives (safely unplugged now, don't know what's on them) Looks like the DIPS are set wrong (gives an HALT-E on the back panel, looks like memory? does anyone know?). I've been looking at the 68k IRIS FAQ, but most of that deals with 2000Turbo and 3000 models Does anybody know (a) what the 26-pin header on the front of the PM2 is? it's between the bridge to the GFX and the 8-pos DIP. Currently unconnected, should it be? Pictures of a 2400/2500 would help. (b) what are the switch settings? 3 switches on the PM2 (one on the edge, two mounted amongst the chips) (c) PM2M1 switch settings- are they like IM1 (IRIS 3000 memory)

19 years, 2 months

Apple ][ on the PSP

by vcf＠siconic.com

Apple ][ emulator on the PlayStation Portable: http://pspupdates.qj.net/2005/09/apple-ii-portable-for-psp.html -- 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 ]

19 years, 2 months

CRT implosions (was: Re: "screen mold")

by ajp166＠bellatlantic.net

> >Subject: Re: CRT implosions (was: Re: "screen mold") > From: Paul Koning <pkoning at equallogic.com> > Date: Wed, 05 Oct 2005 09:44:09 -0400 > To: cctalk at classiccmp.org > >>>>>> "Tony" == Tony Duell <ard at p850ug1.demon.co.uk> writes: > > >> > I am told, BTW, that several radar operates in planes in the > >> last war > were killed when the plane had a heavy landing, the > >> radar display CRT > imploded, and they were litterally shot in the > >> face by bits of the > electron gun. Tubes typical of that era was the smaller electrostatic types and 5up1/7 were of the era. The aviation tubes used for that airborne radar were surrounded by a mumetal shield to keep mag fields out and the graticule was far thicker than the tube. tere were really two generations of tubes used the first ones were the fragile O'scope types and later there were special heavy glass/metal types. Generally It's rare to see a CRT exposed enough to be a hazard as there is always a case (if for HV only) and some kind of graticule. The actual expections were small O'scopes (O1) and hobby scopes. Tubes larger than about 10" didn't appear much till the mid 50s. Getting face full was unlikely due to the graticule and general consturction. I still have a bunch of 2AP1s (2" round green), 3BP1s (3" round green) for projects. These are old tubes (ca 1953/55 date codes!). I also have a modern D170 (2.2x1.8 rectangular) for some project.. >But larger flat face radar tubes appeared in the 1960s if not >earlier. The CDC 6000 series console (DD60) uses a pair of radar >tubes, with electrostatic deflection. I'm not sure exactly how big >they are, but certainly not less than 12 inches. They were probably >at least 2 feet long. Deflection voltage is around 2 kV, supplied by >an amplifier chain ending in a 3CX100A5 microwave transmitter tube. Actually earlier, the SAGE system used a larger 12 to 16 inch round with a 10-12KV Accelerator. Heck look at the tube used for the PDP-1 Console. >The radar tubes used until maybe 5 years ago at US air traffic control >centers were at least that big, possibly bigger, and also flat. Those were bigger flat face ARTS 1 and II series. If memory serves they were in the 19-21" range. The fragile portion of CRTs is always the neck area. The risk with implosion is the neck/gun assembly will be propelled foward through the screen if the screen shatters. When I was younger I'd scrounge old TVs for the componenents. The CRT being useless to me would get taken out back and put in the junk hole and a big rock heaved in. If it was put in neck first and the face crushed the neck/gun would be propelled 10 to 15 ft on a good shot to a large 19" or bigger CRT and the glass widely scattered in a 10ft or so radius, we avoided that as that meant raking up the remains. The real hazard and I got to see this once is foolish people transporting CRTs without making sure they are properly discharged. One case I did see was a doof carrying a 12" by the neck, minor cuts. The other was a fool carrying a tube from a H1500 terminal. He was careful supporting it but the face with the neck upright. However the HV was still undischarged and found it's way to his chest. CRT was dropped straight down and the neck rebounded off the floor and went straight up into the rooms ceiling tiles. Minor cuts to the lower legs, very lucky. Took a while to sweep that mess up, there was glass everywhere. Allison

19 years, 2 months

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test-drb October 2005