test-drb October 2000

test-drb@ccmp.vtda.org

184 participants
568 discussions

by ethan_dicks＠yahoo.com

--- John Foust <jfoust(a)threedee.com> wrote: > At 09:10 PM 10/12/00 -0700, Chuck McManis wrote: > >I recently gave away all my Amiga stuff. And it wasn't because it wasn't > good stuff. > > Argh! I trust it found a good home. I haven't morphed far enough to > toss my Amiga schtuff, which includes the truly rare and obscure. > > I get the impression that today's Amigoids aren't interested in the > historical details, but more the latest-greatest that keeps their machines > functional and alive. Speaking of keeping Amigas alive, if anyone is looking to use semi-modern hardware with an Amiga, (*begin blatant commercial plug*) I still stock the GG2 Bus+ ISA adapter card, new, with factory warranty. They aren't exactly flying off the shelves these days. Contact me off list if you want details. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/

24 years, 2 months

IDE on Qbus (was Re: Microvax II)

by ethan_dicks＠yahoo.com

--- ajp166 <ajp166(a)bellatlantic.net> wrote: > IDE is fairly stupid and easy to interface as PIO, DMA would not be that > bad for vax or PDP11 but you would pay for it by needing drivers as > there are none. . . . > RT-11 and the overlay TSX-11 are easy compared to something like VMS. I've written VMS drivers from scratch (for the VAXBI COMBOARD) and I've dug deep into someone else's code for an AmigaDOS IDE driver (PIO via ISA interface and GG2 Bus+ ISA bus adapter). If it were possible to make an inexpensive IDE adapter for Qbus, I'd be more than happy to tackle a driver. I've got a couple of uVAX-IIs, KDF11 CPUs, etc., so the rest of the system is no problem. Has anyone designed a quick-n-dirty Qbus IDE adapter? If one is willing to let the VAX processor do the work, it could be as simple as mapping the I/O registers of the IDE drive into some I/O addresses. Not much more than a few Qbus drivers and an address comparator, a la older ISA IDE cards. It would probably heavily tax most CPUs, though. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/

24 years, 2 months

Red Erasors, contacts, and gold revisited

by dhquebbeman＠theestopinalgroup.com

> I'm sure the Canadian product uses some kind of silicone > oil. I have friend with a can of silicone oil ( like is > used in car waxes ). I'll have to try it to see if it > has similar contact improvements as the grease does. You can buy Stabilant 22 in dilute, ready-to-use form, or in large quantities as a concentrate. They describe it as a polymer, specifically: Polyoxypropylene-Polyoxyethylene Block Polymer of the Polyglycol family Any of you chemists know if this happens to be the same as/ related to silicone? Link to manufacturer: http://www.stabilant.com/techt01h.htm regards, -dq

24 years, 2 months

VMS

by mac＠Wireless.Com

http://www.nwfusion.com/news/2000/1010newvms.html -Mike C

24 years, 2 months

PDP-8 question...

by ajp166＠bellatlantic.net

>Well, mine is set for fields 4-7, but I dont have any docs. And since >its working i'm hesitant to tear it apart. > >-Lawrence LeMay Tear it apart? This one is only two boards at the top one is the only one with significant logic and drivers. the other is the diode matrix and core mat. There is a DIP socket in the middle (mine has nothing in it) and a set of three posts one dip above it. If you could tell me what you have there it would help. I'd like to get mine into fields 0-3. then I can put the 4k at field 4 making a nice tidy 20k system. Then I have to get some mass storage going. I do have two serial cards (m8650 and 8652)so at least I can fake a serial reader with a glass console. Allison >> I just got a DATARAM DR118A core (16kx12) for Omnibus

24 years, 2 months

early non-US personal computers

by mranalog＠home.com

Doug Salot <doug(a)blinkenlights.com> said: > Hey unamericans, any candidates for personal computers made outside of the > US before 1976 (other than Micral)? > > Define "personal computer" any way you like to as long as you define it > this way: digital, (semi)automatic, programmable, accessible/available, > small, inexpensive, and simpler than an F-14 fighter jet :-) Turing > completeness helps, but I'm flexible. We this WOULD have have been a good opourtunity to talk about the 1971 English computer I received in the mail last Wednesday from the NE coast of England. I WOULD have said that it is a "Educational Analogue Computer Type C180" made by Physical & Electronic Laboratories Ltd. It has 18 amplifiers, 16 of which can be used as integrators. It my first general purpose analog to use intergrated circuit amplifiers. The DIP 741 amplifiers are are in beautiful all gold packages with date codes of 7105. And I have a picture at: http://www.best.com/~dcoward/analog/c180.jpg But, I'll save this for later. The person I bought this computer from does have some newer digital computers for sale. He has 18 Memotech MTX512s and other Memotech stuff that he is hoping to sell as one lot. He also has Atari STs, Amstrads, Amigas, Atari Lynxs, games for the Lynxs and VIC20. See the whole list at: http://www.theoldecomputerosityshop.freeserve.co.uk/Computers/Computers.htm The Olde Computerosity Shoppe, Harlepool contact: "john.masterman" <john.masterman(a)ntlworld.com> --Doug ========================================= Doug Coward Press Start Inc. Sunnyvale,CA =========================================

24 years, 2 months

VMS

by cmcmanis＠mcmanis.com

Yeah, but they don't mention a VAX version :-( --Chuck At 10:44 AM 10/16/2000 -0700, you wrote: >http://www.nwfusion.com/news/2000/1010newvms.html > >-Mike C

24 years, 2 months

Red Erasors, contacts, and gold revisited

by dhquebbeman＠theestopinalgroup.com

> Sorry to bring this one back up, but I was cruising the Classiccmp > archives and read the thread. > > I liked the idea of dipping the erasor in alcohol. Nice bearing fluid and > would help reduce abrasion as well as acting as a solvent and carrier for > gunk. > > Not all contacts are gilt which is one application for abrasives. The > hard disk MIO for my Atari 8-bit is an example. It's traces are unfinished > tin-colored things and they oxidize rapidly. > > Some of you folks had solutions to check the oxidation such as silicone > grease. Could you amplify on this and especially what type of grease and > where to find it. Another possibility (one I haven't tried with computer gear) would be a substance called Stabilant 22... it's made in Canada, can't recall the name of the firm. It's a liquid described as a contact enhancing fluid, and operates as both an insulator, and as a conductor through what they call "quantum tunnelling". I use it on automotive connectors, and no treated connector has yet shown signs of oxidation. Anyone tried this snake oil^H^H^H^H^H^H^H^Hamazing substance? regards, -doug q

24 years, 2 months

Paging Anthony Eros

by cmcmanis＠mcmanis.com

Has anyone heard from Tony recently? I'm beginning to get concerned that perhaps something has happened to him. --Chuck

24 years, 2 months

48v dc power

by ajp166＠bellatlantic.net

From: R. D. Davis <rdd(a)smart.net> >Out of curiosity, what's the furtherest distance anyone here has >noticed RFI from their systems (open or closed)? 400ft, 10mhz clock for a S100 z80 system that was also distributed to other boards on the bus. A modification to the termination of that line virtually made it disappear, the standard terminators didn't actually match the impedence of the line making it antenna. Other hot one was the Altair you could hear the 2mhz anywhere in the house with the case on. Usually if you can isolate the freq you can tame it. one that get me every time is the 15700 hz horizontal retrace >from TVs with most monitors running second, all plastic cased. Most stuff in a metal box with screws in tend to be quiet and commercial systems like DEC, SUN and HPs in full dress tend to be quiet if made to the specs in effect after 1980ish. PCs however are all over the map, some excellent and some very poor. Allison

24 years, 2 months

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test-drb October 2000