One of the cover pieces to my PDP-8 has seperated in the one corner where
the top teal plactic piece joins the translucent plastic side. What kind
of glue would you recommend I use to fix this? I don't want to do any
damage to the cover by using the wrong type of glue.
Thanks.
Tom Owad
--
Sysop of Caesarville Online
Client software at: <http://home.earthlink.net/~tomowad/>
> The TD-800 were CRT based terminals some based on 6800 micros others on
> 8086 (yes indeed) Burroughs claimed that they were the first to use the
> 8086 processor and helped Intel debug it. When the IBM PC came out
> Burroughs were using substantially more powerful hardware just as dumb
> terminals.
One of the fun things about the TD-800 was that it was possible to read
and write the micro's memory. I wrote a Cobol program (the only programming
language I had) on a B800 to let me monkey about with the TD-800's
innards. The ones I was using had a 6800 in them.
Roger Ivie
ivie(a)cc.usu.edu
<It has a drive apparently loaded with some version of VMS but I have to
< put together a console cable to find out. Then of course, the big trick
< will be the fact that I don't have VMS on tape or the passwords to the
Not a problem. VAX/VMS has very high security IF you can keep people away
>from the boot console.
The proceedure is simple and in the VMS doc set.
Set halt enable toggle on console connector pannel.
hit halt, then reset
the machine should count down to 2 and Give the >>> prompt.
Then it's >>>B/1 DUA0 (assumes first MSCP drive)
when SYSBOOT> happens...
SYSBOOT>>> SET UAFALTERNATE 1
SYSBOOT>>> SET STARTUP_P1 "MIN"
SYSBOOT>>> CONT
then you see a normal vms boot proceed.
When it gives the process terminated hit return a few times.
LOGIN: SYSTEM
PASSWORD: {only give a return}
PASSWORD: {again ONLY RETURN}
you are now logged in to the system account in single user mode.
change the passwaord to something safe.
$ DEFINE SYSUAF SYS$SYSTEM:[SYSEXE]SYSUAF.DAT
$ SET DEFAULT SYS$SYSTEM
$ RUN AUTHORIZE
UAF> MOD/PASS=system system {SYSTEM account now has password SYSTEM}
UAF> exit
$@sys$system:shutdown
when shutdown prompts for action taken hit return {take default}.
When it says it's all done and you can halt the system hit the halt button
and we do it again thins time with a real password.
>>>B/1 dua0
SYSBOOT>>> SET UAFALTERNATE 0 {use the noew password}
SYSBOOT>>> SET STARTUP_P1 "" {normal system start}
SYSBOOT>>> CONT
after it does its things
LOGIN: SYSTEM
PASSWORD: SYSTEM {FYI, ccase insensitive and notmally not echoed}
Your in and have system managers prives. HELP at the $ prompt gets help.
Also there are four OSs that run on it, BSD unix, netBSD, Ultrix (DEC)
and VMS(DEC). The first will be hard to get. The second sorta works
and ultrix I ahve no idea on the license. VMS is available on CD or any
media you can find. VMS V5.4 through 6.1 are on the CD and all are under
the same DECUS free hobbiest license. The versions on the CD are standard
releases and DECnet runs. The CD and many archives have CMUip (TCP/IP
stack) and a few other neat things.
Have fun.
Allison
At 10:27 PM 8/15/98 -0500, you wrote:
>As long as I'm getting physics lessons, I figure now's a good time for
>chemistry.
>
>I've got a bunch of portables, most of them with batteries. The batteries
>are clearly the weak-points of these systems in terms of long-term
>viability. First, is there any way to ensure the batteries live forever?
>If not, what's the best way to preserve them, how long should I expect
>them to last, and what can I do now to prepare for the inevitable
>repair/replacement down the road?
>
>My current plan is to remove all batteries and store them in the fridge,
>but I'm not crazy about the idea. Do some battery types store better than
>others? I have to deal with NiCd, Li+, NiMH, and Lead-acid.
>
>-- Doug
>
The battery life times should range as Lead-Acid, NiCad, NiMH, Li+ from
shortest to highest. Lead Acid batteries will be ruined if you let them
sit dead. Even as short a time as overnight can ruin them. It doesn't
appear to hurt NiCads to let them sit dead. I'm not sure about the other
two. NiCad and LA will both go bad with age even it they're not used so you
may as well use them.
For maximum life of NiCads DO NOT discharge them all the way or use a
rapid charger on them. These discharge then rapid chargers that are all
the rage with toy car owners are not only a waste of money, it's also
ruining their batteries.
Almost all battery packs use standard cells inside and there are plenty
of places that will rebuild your old battery packs so they shouldn't be a
big problem. I rebuild LOTS of them for HP and TI calculators.
Joe
A C128D running at 20MHz with 20MB of RAM plus a 2GB Hard Drive and a 1.6MB
floppy drive is one extraordinary system.
It is sure worth more than a "coupla bux", although I would have fallen out
of the bidding by now. Note that most of these accessories are quite new and
some are useable on other systems.
Phil Guerney
-----Original Message-----
From: Doug Yowza <yowza(a)yowza.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Monday, August 17, 1998 5:33 AM
Subject: C64 for $800
>I'm no Commodore expert, but is there really anything in this lot that's
>worth more than a coupla bux, or is this just the alex-factor at work
>again?
> http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=25343674
>
>-- Doug
>
>
At 06:19 PM 8/15/98 -0500, you wrote:
>Hey, Apple weenies, I just picked up a dignostic ROM for the Mac LC, LCII,
>and CLSII. It includes trouble-shooting docs. $12000 or best offer :-)
>
>-- Doug
Ok $.50 . That's my best offer.
Oh, you said Apple weenies. Well that leaves me out.
Joe
>
>What you have there is a VT103... it has a 4x4 backplane (Q/Q) and a
>more gutsy power supply than a standard VT100. Yes, you can build
>a working pdp-11 into it... One of my 'workhorse' machines when I was
I have some VT100 lookalikes lying around, a VT101 and a VT131.
Any chance that these also can be turned into PDP11's?
>I thought the VDP-40 was that all-in-one computer that
IMSAI came out with in the same timeframe that was so bug-ridden that
most
were returned to IMSAI and hardly any are in existence anymore?
Except for the floppy drive/controller the machine ran ok. I never had
a memory or CPU failure. Unfortunately, the floppy drives didn't work
so well, and the controller seemed to work only during certain phases of
the moon.
Are they rare? Okay, list bargain, I'll part with mine (no, don't thank
me) for a mere $5000 (US or CDN, hey, i'll absorb the arbitrage
difference). Cash of course, small unmarked bills, delivered by courier
overnight.
Jack Peacock
Well, I certainly wasn't disappointed on my first trip to the MIT flea
market this weekend. I went there with childish entusiasm and $200 in my
pocket and left with:
1 Atari 800 - Not working but I can fix it (needs a new 6502 wich I got
tons of)
1 Vic-20 - Working
1 TI99/4A (Cream Colored) - Working
1 Macintosh Portable - Needs some work
1 Osborne 1 - Needs work but I got the technical manual with it
1 Osborne Executive - Powers up but I need a boot disk
1 Kaypro 1 - Powers up, need boot disk
1 Kaypro 2 - Powers up, need boot disk
1 Kaypro 4 - Powers Up and boots (came with Wordstar, Microplan,
Basic-80, and CP/M 2.2)
and $65.00 or so of my original cash.
I also was able to nab a CoCo2 at a local flea for $5
Tony
I got this somewhat neat plotter today made by 3M circa 1984. Its a
portable dealie that can be programmed for different types of bar and pie
charts and plots, plus has text capabilities. It has a keyboard with an
integrated LCD matrix display that slides off the front. It prompts you
for the type of chart you want, then asks you to enter all the data points
in. It then plots it for you. I also got a separate unit that has a
micro-cassette storage drive and a carthridge slot for some type of modem
option.
So anyway, there's a reason why I'm talking about this relatively boring
relic. Last week I was out of town on a project and was going home for
the weekend. On my way to the airport I stopped off at a thrift store.
One of the things I came across was this 3M plotter. It was marked at
$29.99, but this is one of those shops that slashes prices every couple of
days as the thing doesn't sell. I wanted to take it, more so because I
was curious as to what it was, thinking it might be a computer with the
keyboard and micro-cassette storage and all. But I didn't want to spend
$30 on it and I certainly couldn't take it with me on the plane, and
didn't have enough time to grab it, haul it back to the local office, then
high-tail it back to the airport. So I figured when I returned on Monday,
I'd head back to the shop confident it would still be there.
When I got in Monday I missed the store closing by a minute. I came back
in the morning of the next day to find it gone. I asked one of the store
clerks if he knew what happened to it and he said that it was tossed out
the night before. AAGGH!!! I was bummed, only because I thought it might
have been something really neat but didn't have the chance to find out.
Also, I'd failed to write down the model number and thus couldn't do a
useful web search.
I figured one day I would run into one again and would just have to be
patient until then. Well, I would have never thought that day would be so
soon. The best part is the one I got today was cheaper ($7), had a hard
plastic carrying case, came with a (photocopied) manual, and some plotter
paper and pens. And it works (I'm playing with it right now, its actually
really cool, and useful!!) Plus the one I saw last week was on the east
coast, this one was on the west, at a flea market near where my parent's
live that I haven't been to in ages.
So what is the purpose of this long rambling? Uncie Sam's story has a
moral: there's (almost) ALWAYS one more out there, so if you don't get it
the first time, don't fret (and certainly don't pay $12,100 for it).
Serendipity will prevail someday and you'll get one too, but you have to
be out there looking to make it happen.
Sam Alternate e-mail: dastar(a)siconic.com
-------------------------------------------------------------------------------
Ever onward.
September 26 & 27...Vintage Computer Festival 2.0
See http://www.siconic.com/vcf for details!
[Last web site update: 08/09/98]
