< Apart from the "gee, that really was slow" potential for demonstration,
< recreating the past, is there *any* use for old modems?
I still use a 2400 Zoom pocket modem with my PX8. The PX8 isn't fast
enough to keep up with anything over 9600 and 2400 is generally the
slowest most services will go now (some will not go under 9600).
Allison
DONT use purple stuff! its way too strong. i used it once on a pc case, and
where it dripped and/or sat on the case, the paint was a lighter shade. its
very strong, so if you take appropriate measures, it will clean most anything.
the best thing i've found is armor all all-purpose cleaner. safe, and cleans
good and wont draw the colour out of anything. it you use lots of it with hot
water, it even removes the grease pen price marks from thrift stores.
david
In a message dated 98-09-22 18:11:28 EDT, you write:
> If I recall, the FAQ recommends something called "Purple Stuff". I don't
> know
> what it is or how well it works or how hard you have to scrub, if at all --
> I've never used it.
>THANK YOU Tim
You're welcome!
> This is the kind of info I've been searching EVERYWHERE for!
And the kind that languishes about in DEC-internal docs :-). Keep in
mind that I strongly suspect that at least some of the RD51 numbers
in that table are wrong.
>The info on the Quantum page was virtually worthless, and I'd not been able
>to find anything anywhere else.
Unfortunately on the net these days, you're far more likely to find
folks trying to act self-important rather than actually dealing with
useful technical information. I certainly thought I'd see useful
information on 'classiccmp', but it doesn't seem to be any better than
the rest of the world.
>If you haven't already, could you please
>stick this on the PDP-11 FTP site, so the next person will have an easier
>time finding it (if it was already there I'm going to feel really stupid).
Indeed, it is now there:
http://sunsite.unc.edu/pub/academic/computer-science/history/pdp-11/hardwar…
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology Voice: 301-767-5917
7328 Bradley Blvd Fax: 301-767-5927
Bethesda, MD, USA 20817
>1800, used for process control (leading to the S/7).
>
I worked a lot with the System 7 back in the early 70's and wrote the code
on it (TPMM)
that controlled the first On-Line ATM in the US. It was at a small bank in
central NJ. The
ATM (2984 I think) was remote to a System 7. The files were transferred at
night to a System 3
by carrying the disk pack across the room. The ATM was called "Tin Teller".
The bank
was Hunterton County Trust. Never forget the day when testing it the
machine at the branch
with my young kids along, the looks on their faces when they saw money come
out of the
slot on the wall.
gene@ehrich
http://www.voicenet.com/~generic
Computer & Video Game Garage Sale
< As far as the -10 is concerned, there would be several hundred (if not
< thousands) of modules and the backplane (for want of a better word) was
< machine wrapped nest of identical (yellow) wires. I doubt that you coul
< reliably follow a signal within a rack, let alone across the whole machi
< However, as I said before, I've never attacked a -10 with a scope so I
< can't be sure that this isn't possible.
Never touched a 10 myself but... I've worked with those who had. Despite
it's complexity most of it is the same thing x36 or some sub multiple.
So troubleshoorting it would be like attacking and older straight 8 or
8I/L series with it's large number of modules. You follow a problem along
a bit path to the point of failure. Usually with a handfull of know good
common modules and a scope. Backplane problems were extermely difficult
if there were any kind if damage to the wiring or connectors.
Allison
< > While isopropanol is good wash a trip through the dish washer works ev
< > time for me. Air dry or a cool oven to get out any trapped water.
<
< This is really good information I am going to try this on one computer
< collection. This unit is so Gummed up by Cigarette smoke I can't even st
< to be in the same room with it, It actually makes my sinuses get irritat
< and makes me sneeze while this machine is on. I opened it up and there w
< sticky film all over the components, almost like a fungus growing on it
< cigarette tar.. I was going to get rid of it as it smelled so bad, so I
< this works..
this takes me back some to a customer that was making TV converter boxes
(legit). Seems the boards were assembled in Mexico and then tested in
Texas. Then would fail after a few hours... seems fungus growing on the
board from the bad water (recirculated and reused excessively) used would
cause high resistance shorts that would affect the microprocessor crystal
clock. The fix was a was a wash in good Texas water.
Actually, a clean board has a lower fail rate as the cooling is better,
no dust or grunge.
Case parts can also be cleaned that way if they fit, me I take them
out in the driveway and use the hose and a bucket of soapy water.
With care you can clean most anything with soap and water... assuming
the object itself isn't water soluble. ;)
Allison
Sorry for this, but it's short.
I recently lost correspondence with a list-member... it turned out
that my e-mail addr had mysteriously mutated, and mail sent there
just vanished, no bounce, no return... zilch. It took a phone call
to clear *that* up. [Correct is: jpl15(a)netcom.com]
I have written two active list members, with no replies, though
they used to do so.
So: Seth M. and Paxton... if you are writing me privately...
I'm not getting them. And if you've gotten my mail(s) and simply
haven't/don't wish to write back.. my profuse apologies to you and
the group, and I'll shut up now.
Thanks for your indulgence, fellow List-friends.
Cheers (digital garlic breath?? nahh....)
John
< Do you have to stop it before it goes through the dry cycle?
On mine I can set it for a low energy dry so that varies. I'd suggest
letting it start and after five minutes pull it out (warm board will dry
faster).
< I have a '64 I don't value especially that I'll try this on... anything
< else I should know before this venerable machine gets opened up?
Anything that can trap water like dip switches or adjustable coils will
take a long time to dry. Baking in a 170-180F oven will accelerate
drying with little risk. I've done this to PDP-11 and VAX boards, a
TRS80 and many other boards that were real grungy. The process used at
the factory is very similar to a dishwasher (sometimes is!).
Allison
(wow, offline for 4 days, and well over 100 messages!)
heh, i have that apple emulator program. i think someone gave it to me. it's
pretty neat, but the apple // screen is rather small when you're running on a
compact mac's screen! the program even included a comm program for a // so you
could xfer files between the // and the mac.
david
In a message dated 98-09-22 16:34:01 EDT, you write:
> Have you seen the Apple II emulator 'II in a Mac' for the 68000 Macs? It
> placed the moitor, a keyboard, joystick, four floppy drives, printer, and
> a clock on the screen. Then you could actually click on the keyboard's
> keys or move the joystick on the screen with the mouse. A really neat
> interface which, IMHO, did a half decent job at preserving the hardware's
> feel. It's a shame more emulators don't do such a good job at portraying
> the hardware.
>
> Tom Owad
>
