I have some old hard drive manuals available, if anyone wants them. Otherwise
they will probably be thrown away.
Ciprico Rimfire manuals for the 3200 series.
Control Data CDC EMD/SABRE eight-inch module drive
PA8xx
Fujitsu M2351A/AF mini-disk drive
Multiple copies are available for everything except the
Fujitsu manual.
-Lawrence LeMay
lemay(a)cs.umn.edu
Hi,
-----Original Message-----
From: Hans Franke <Hans.Franke(a)mch20.sbs.de>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Saturday, May 08, 1999 10:03 AM
Subject: Re: info wanted: Motorola "Educational Computer"
>(BTW:
>http://people.delphi.com/paulrsm/68k/68k.htm
>is a usefull source for 'old' 68K systems, including
>an complete HTML Version of the DTACK GROUNDED newsletter
>from 7/81 until 9/83 (excerpt from the first issue:
>"...Accordingly, there are a lot of companies who are
>planning to drive the PDP 11/70 out of the marketplace
>with $10,000 (base price) 68000 systems. It is rumored
>that Apple is one of these companies, ..." sometimes
>realy nice if you look into past rumors ... - I hope
>he will convert the other isues)
Talking about getting the pdp11 out of the marketplace,
Anybody know the cadmus systems ?
I would love to have one of these.
(where Motorola CPU's on qbus)
cheers,
emanuel
I have one of these, a working (tried it, worked) and reassembled it as
Compupro CPU-Z. No interest here in programming 8088.
< I picked up a Compupro 816 computer yesterday and an external drive unit
<with a hard drive and an 8" floppy drive. I haven't brought it home yet so
Ok, It's an S100 crate so the box and it's contents can be very out of sync.
If it has the 816 card that means 8085 and 8088 cpus on one card and it ran
CPM-80, CPM-86, CDOS, CCPM and even MSDOS(odd io compared to PC)!
<I haven't taken more than a quick look at it. Can anyone tell be about the
<computer and drive? What CPU, speed, etc. What kind of operating system i
There were several variation of the cpu speed but the slowest was 8mhz on
the 8088 and the fastest was 10mhz. The 8085 runs ar 5/6mhz.
minimum configuration was:
CPU 816
interfacer 4
Disk 1 (or 1A)
128k static ram
8" dual drive DSDD
versions included:
512k M-drive (ram disk 512k)
SYSTEM SUPPORT (TOY clock, interrupt controllers)
Hard disks
The drive used a DISK1 floppy that was a DMA device using 765 controller.
Hard disks would have either been DISK2 (8" drives) or DISK3 (5.25 drives).
<uses, etc. I don't see a keyboard or video connectors so I assume it needs
<a terminal to talk to it. Does any have a pinout of the serial port so I
The idea of monitor and keyboard is a PCism.
<the floppy drive use hard sectored disks, etc etc, etc. I noticed that
<there are connectors for both a 5.25" and an 8" floppy drives and another
Yes that controller will do all sizes (can easily be hacked for 3.5"!) but
it's likely that it was used with 8" DSDD or 5.25 48tpi DSDD.
<for a hard drive on the back of the CPU box. Does anyone have a manual or
<the OS software for one of these?
I have both but, I'm time cramped for copying (can't do that volume at
work). Herb Johnson can help here to.
Allison
...or whatever it was called!
The extra book of programming expirements (games?) for the Digi-Comp 1.
Either hard-copy or electronic would be fine.
Thanks!
-jim
---
jimw(a)computergarage.org
The Computer Garage - http://www.computergarage.org
Computer Garage Fax - (503) 646-0174
Hi all,
I picked up a Compupro 816 computer yesterday and an external drive unit
with a hard drive and an 8" floppy drive. I haven't brought it home yet so
I haven't taken more than a quick look at it. Can anyone tell be about the
computer and drive? What CPU, speed, etc. What kind of operating system it
uses, etc. I don't see a keyboard or video connectors so I assume it needs
a terminal to talk to it. Does any have a pinout of the serial port so I
can make a terminal cable. What size is the hard and floppy drives, does
the floppy drive use hard sectored disks, etc etc, etc. I noticed that
there are connectors for both a 5.25" and an 8" floppy drives and another
for a hard drive on the back of the CPU box. Does anyone have a manual or
the OS software for one of these?
Joe
<The first thing to try is to charge a large electrolytic capacitor
<(say 10000-100000 uF) to about 20V. Now discharge it through the faulty
<cell. If you are lucky, the cell voltage will rise, at which point charge
<the cell as above.
This is the beast bet as cells fail with internal shorts and the cap will
dump enough energy to open them without cooking the cell.
<What you do is use a current limited PSU of about 10V and 8A. 'Blip' it
<across the cell for a fraction of a second - just tap the wires on.
This is ok if the cell is hard starting, I don't recommend it. The better
approach is the LARGE cap charged to 12-20V and follow with 1/4 the cell
capacity for a few minutes (NOT LONGER).
<I have seen one article which suggests doing the same thing with a car
<battery as the power supply. DON'T!!! . The current is far too high, and
<the NiCd is likely to explode.
Extremely dangerous.
<manufacturers used standard-sized cells, so it is possible to rebuild old
<battery packs.
Often far cheaper than a new one.
Allison
<been watching when recharging a cell treated with the capacitor zap method
<and seeing it's voltage go from about 1.3 Volts back to zero again,
<sometimes with a faint ping if about completely recharged. Other cells
<become leaky electrically so they can be charged, but self discharge in a
they are all bad and really the trick is temporary. I have tried this and
sometimes it works for packs that have sat too much unused. First get
the cells to take a charge, then discharge at .2 to .6 capacity and then
recharge. The trick is to stop the discharge before any cell falls below
1.1v. Some packs after a few cycles start to work normally again.
Then again tabbed cells for replacement use run from ~$1.50 to $4 depending
on size (not at radio shack, they charge 3x that!). So replacing the cells
(as a set) is the best bet.
My PX-8 uses 4 1.2ah sub C cells that I can get for under 10$ total and
the internal 4 cell 110ma sub AA the whole pack for usually under 5$.
Allison
Howdy, I've got a DEC Option Module Guide (~1500 pages, 1991 vintage) that
I'm willing to trade for a set of three PDP-11 boards (2 x M8044-Dx, 1 x
RKV21) these are two 32KW memory cards and an RX02 interface card. Email me
off list if you're interested.
--Chuck
Hi,
I used to have a camera like that and the trick I used for highly reflactive
objects that still needed extra lighting was to tape a piece of velum papre
in front of the flash to diffuse and soften the light.
Francois
>The second picture shows the inside of the I/O expansion chassis (sorry
>about the glare...this stupid camera doesn't have an option to turn off
>the flash correctly, or stupid me forgot how to do it right).
The method that I use to open up old NiCd's is with an old knife and a
propane torch.
The knife is an old snap-off utility knife (with a metal insert in the
plastic handle). I turn on the torch, open the knife as far as it'll go
(about 2 1/2"), and heat it over the torch until it is red hot. I then melt
through the seam of the battery pack (or the middle, if I can't find a
seam). To fasten the pack back together, I just use a soldering iron and
"spot weld" it back together at the corners. This makes it easier to take
apart the next time the cells need replaced.
--
-Jason Willgruber
(roblwill(a)usaor.net)
ICQ#: 1730318
<http://members.tripod.com/general_1>
-----Original Message-----
From: Francois <fauradon(a)mn.mediaone.net>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Friday, May 07, 1999 9:26 PM
Subject: Re: Breathing new life in laptop batteries
>Hi,
>Thanks for all the info. Apparently there are no reliable way to bring
their
>youth back, I would like to have a reliable laptop with a battery that last
>more than 30 min. I found a Zenith z-star 433 VLp (500 Mb hd, 12 M RAM and
>color display and the Zenith J-Mouse!!!) that I'd like to use while away
>from home. The batery I got seem to work for a while. Also it has four
>contacts does this means that it provide mutiple voltages or is there some
>kind of charge sense signal? I haven't brought the battery to the bench yet
>(no room on or near the bench:).
>Also the pack seems to be sealed pretty good, any elegant way to open it up
>and reclose it without too much damage?
>Thanks
>Francois
>
>PS: I actually got 3 of these laptops and built two from the set of parts
>and two of the batteries are totally shot: they get very hot when I try to
>charge them and of course no juice is coming out. I can practice on one of
>the dead ones.
>
>>> >This is the beast bet as cells fail with internal shorts and the cap
>will
>>> >dump enough energy to open them without cooking the cell.
>>> >
>>> Yes, but many times in my experience another short appears shortly. I
>have
>>
>>Unfortunately, that's right :-( I would never depend on a cell that I'd
>>repaired by this method.
>
>
>
