test-drb February 1998

test-drb@ccmp.vtda.org

147 participants
783 discussions

by allisonp＠world.std.com

<> > 4 CP/M Version 1.0 Release 2. Does anyone know what it's for? <> <Hard sector agrees with my information also. But I have a note <indicating that the Vector 4 was/is a CP/M-86 machine. Any other inputs < Don, I think your right. The CP/M Version1.0 Release 2 could only be cpm-86 as CP/M-80 would ahve been more likely 1.4 or 2.2. Allison

26 years, 10 months

Seen on the Web : Does anyone need ConvexOS manuals?

by hansp＠columbia.digiweb.com

Chance for smoeone to save some documentation, and perhaps a machine... -- Hans B. Pufal : <mailto:hansp@digiweb.com> Comprehensive Computer Catalogue : <http://www.digiweb.com/~hansp/ccc/> _-_-__-___--_-____-_--_-_-____--_---_-_---_--__--_--_--____---_--_--__--_

26 years, 10 months

I GOT ONE

by rus_wallden＠bc.sympatico.ca

THE ARCADE PONG NEED TO FIX IT THE SDREEN IS BLURRY

26 years, 10 months

IBM docs.

by Philip.Belben＠powertech.co.uk

At the risk of reviving at least two discussions better left dead, I have dug out some more IBM documents. I have a 4361 marketing leaflet - the 4361 was the entry level 370 system between the withdrawal of the 4341/4321 and the introduction of the 9370. I have practically no technical info so it won't contribute to the debate on power requirements, but it was a self contained, air-cooled unit often described as looking like a chest freezer. I also have the following pocket reference cards/books. IBM System/34 Command and OCL Statements Reference Summary (9th edition, April 1983), 170 pages IBM System/34 COBOL Reference Summary (4th edition, January 1982), 90 pages IBM System/34 Assembler Reference Summary (3rd edition, July 1979), 26 pages IBM System/32 SCP Command Statement Reference Summary (6th edition, May 1980), 23 pages It seems I have a second copy of the Command and OCL statements and Cobol reference summaries. *** IF ONE OF YOU OUT THERE WITH A SYSTEM/34 NEEDS EITHER OF THESE I WILL SEND IT/THEM TO YOU *** I might also photocopy the Assembler reference if you ask nicely. If anyone out there has a System/32 I shall be so amazed I might even send you my only copy of the reference card. The instruction set of the System/34 looks CISC and 8-bit-ish, although it handled 16 bit and (I think) 32 bit data. Typical speed seems to have been 0.1 to 0.3 MIPS. Someone on this list some months ago described it as "a room-sized 8088" which is probably about right, performance-wise... Philip.

26 years, 10 months

9370 is a dog! Was: Re: Re[2]: Firsts

by Philip.Belben＠powertech.co.uk

[Power Consumption of 3090] > Are these all water machines? There are some air-cooled versions that are > probably reasonable. All 3090 models are indeed water machines. The 3090 was IBM's large mainframe of the late 1980s. There were other 370-derived machines around at the time. In particular there was the 4300 series, of which the 4361 and 4381 remained at that time (I think if you tried to buy a 4321 or 4341 you got a 4361. The price was the same, anyway.) I cannot remember whether these were air or water cooled, but they were much less powerful than the 3090 >> These figures are not even for a minimum system - you have to add disk >> drives and that awful 400Hz motor generator set - which can consume up >> to 7kW in itself. > > Yes, the 400 Hz would be a problem, almost as much as a cooling system (if > one went with a water machine - probably too big of a headache). I wonder. I have never seen inside the PSU of any of these machines, but it seems to me that the outputs are all going to be low voltage dc at a few hundred amps - so conventional switching power supplies could be contrived (tho' probably not purchased new if there are tens of kW involved!) to replace the strange 400Hz thingies. And a little circuit to provide a 400Hz heartbeat if the machine uses this at all... >> So, as I said, a typical system based around, say, a model 200 might >> consume 50kW, but even that needn't cripple you financially. > > No. Around me, electricity is not very cheap - 11 cents/kWh - but running Much the same here. > a 50kW computer is not a financial burden if done in moderation. What > might be a burden is getting the service entrance of the house to a point > where it could handle 50kW nicely. Yes. Although the elctricity company may do a lot of the work free of charge if they think you're going to use a lot of the stuff. (My parents achieved this. They wanted to move the meter board, so the electrician doing the wiring told the electricity company, they're going to use so much electricity thy'll need 3-phase and there won't be room in the existing location. Result: new 3-phase connection and new meter board, all free of charge.) > I suppose that is the good thing about RCS/RI - we are in a factory, and > are looking to get real 3-phase installed! Nice. I'm surprised you don't have this already if you're in a factory. Here we have 240V (now officially 230V but I've not noticed any change) single phase up to around 20kW peak demand, 415V 3 phase (now officially 400V, ditto) up to a megawatt or so, 11kV 3 phase above that. Some factories have their own supply at 33kV or even higher. Philip.

26 years, 10 months

PCjr

by swebb＠tigerlabs.com

Just happened to come across an old post regarding the PCjr. Its interesting that people still occasionally talk about it. I designed the cartridge that you were talking about. It did reset the machine. This was done to insure that the CPU didnt go into the weeds because of the bus glitches. I (IBM got a patent on the little "L" reset tab on the card edge. There is also a mechanism where the cartridge actually replaced the on-board BIOS. ..gary

26 years, 10 months

PC-jr adapter cable wirelists

by ard＠p850ug1.demon.co.uk

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26 years, 10 months

Switch broken, help?

by william＠ans.net

While packing up two minis in racks today, I noticed that one of the switches on my PDP-8/S is broken. It appears that the little bits of plastic on the handle that snaps into the metal (trunnions?) have snapped off. I think I can repair it, but in case I can not, does anyone have a white DEC switch, as found on PDP-8/Ss? It looks to be the same shape as those found on PDP-8/Es. The other mini, an Interdata 14, needs lots of the caps for the incandescants, but finding any of those would be pure fantasy. Anyway, thank you. William Donzelli william(a)ans.net

26 years, 10 months

Future Computing Trends

by allisonp＠world.std.com

<95 run? I mean, could a C64 or VAX have modern computer features? Well, VAX is a modern computer! It was/is 32bits when intels biggest was still 8bits. So happens that the version I use happen to be over ten years old but new ones are still being built. Now what features would a modern computer have that a 1986 Microvax-II/GPX doesn't? Windows(is 1280x1024 color enough), multiuser, networking and maybe even speed. If anything I'm still waiting for the modern X86 powered boxen to aquire some of the attributes of the VAX (they do but only when running NT or LINUX). Could a C64 do that... YES and NO. The video graphics included in the C64 is far more limited and the 8bit CPU would certainly impact speed but every modern feature is doable(and likely was originally done on the likes of C64s, trs80s, compucolor, ti99/4 Etal). There are people running web browswers, Email and IP on 6500 based machines. The latter proves that the answer is yes in that to the performance limits of older machines there is much that can be done. <BTW, what do you use the Vaxen and so on for? Mostly editing files and pretty printing them. It doesn't eat much more power than a PC so why not. The OS(VMS) allows 36 character file names (18.18), versions and journaling and deep heirarchal directories. The versions is nice when editing as foo_file.text;1 when edited becomes foo_file.text;2 and the ;1 version is still around is needed. Great for coding. Allison

26 years, 10 months

Future Computing Trends

by maxeskin＠hotmail.com

What I wonder every so often is considering the examples set by classic computers, how quickly, efficiently, and stabley could Windows 95 run? I mean, could a C64 or VAX have modern computer features? BTW, what do you use the Vaxen and so on for? > >Hummmphf! > >I must be real retro then...486DX2/50, 8mb ram, 516mb disk, 1x cdrom, >33.5 modem and no sound capability. > >I run Gcadd6, PADS, WP5.0 and 6.0 dos, winders3.1. Almost a classic >and it does everything I need it to do and adaquately fast. > >BUT... My s100 z80 crate still sees several hours a day as do my PDP-11s >and the vaxen that always has one up full time. All provide useful >capability and often surprizing speed when compared to the new GUI. > >Allison > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

26 years, 10 months

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test-drb February 1998