Found the problem, the +5 volt line on the siemans 8
inch drive is shorted - causing the power supply to
shutdown.
also i inserted the cpu boards (yes two of them)
backwords(the osi backplane slot headers are not
keyed)(joy, more rebuilding).
i am really interested in info on "d & b computer
systems"
did they make more then clone boards for the osi
systems?
does anyone have the dip switch tables for the two
banks of switches on the dbi cpu boards.
the boards i am looking for info on are the dbi db1
(cpu mem and console board) and the d&b db-pfdco1
(fdc/comms board).
the fdc board has a 50 pin header for the floppy's but
also has a 40 pin header below it.
can a 5-1/4 or 3 1/2 floppy drive be interfaced to a
osi system?
also what is the pinout of the osi/siemans fdd-100-8 e
interface connector?
it seems to be almost the same as the shugart 50 pin -
but how does it work with the read data pin not used
in the interface?
Bill
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This is a recent email exchange ......
Someone from titanplasticsgroup.com wrote to me:
>> I was just going through a bunch of files/prints
>> that we are throwing away.
>> They are velum hand drawn prints for the Heath
>> Co. Want them? Know anyone who might?
I answered:
> The Heath Co. made many wonderful kits over the
> the years. Kits that became a part of many people's
> lifes. Of course, most of these people have a favorite
> category - Ham radio equipment, test equipment,
> computers, home automation, robots, the company itself,
> etc.
> I am most interested in Heathkit computer related
> information. But even if this is not the case, I can
> most certainly find and donate it a good home, where
> it would be very appreciated.
> If you want to send these files to me I can pay the
> shipping depending on the amount of material you have.
> Thank you for your effort to save this material from
> being thrown away.
They replied:
>> Wow! You guys are passionate about this stuff. I sent
>> this email to other people as well. One collector of
>> those kits drove up from Benton Harbor (only about an
>> hr away) and has already taken them. I thought he was
>> going to cry when he saw the prints. Sorry!
I replied:
> Thanks for finding it a good home.
> Many people started a life-long love of electronics with
> a Heathkit. And many people were able to pass their
> love of electronics down to their children with Heathkits.
> So when you find something that reminds you of the
> excitement of your youth or time you spent with a parent
> to built something together, it becomes a treasured possession.
It made me feel great to think that someone
would take the time to make old internal files
like this available to collectors.
Have nice day :)
=========================================
Doug Coward
@ home in Poulsbo, WA
Analog Computer Online Museum and History Center
http://dcoward.best.vwh.net/analog
=========================================
I'm trying to gather information about the different varieties of Mice
that were used on Lisa and early Mac systems. I'm looking for
additions/clarifications to this list, specifically which mouse would
have been shipped with which system, and if mouse #2 ever existed.
Jeff
--
#1 - Original Lisa Mouse (Lisa and possibly early Lisa2?): Had a metal
ball, long rectangular button, and a "clip"-type retension mechanism on
the connector. The mouse port on the Lisa did NOT have metal around the
connector as is common on DB-9 female connectors. Instead, there was a
plastic "lip" to which the retension clip on the mouse would mate. The
bottom of the mouse was sloped and did not have a sharp angle like the
M0100 mice. The mouse had a tan colored cord.
#2 - (Early Lisa2?): Same as #1 but with standard DB-9 connector instead
of the clip-type retension mechainism. Each thumbscrew had an Apple logo
embossed at the ends.
#3 - Early M0100 (Possibly later Lisa2/Mac XL): Button was not as
slender as the Original Lisa Mouse and had a standard DB-9 male
connector instead of the clip-type retension mechanism. Each thumbscrew
had an Apple logo embossed at the ends. Both the button and cord were
tan colored.
#4 - Later M0100 (Apple II?): Same as Early M0100 but had a gray button
and cord instead of the tan button and cord. The thumbscrews did not
have the embossed Apple logos and were somewhat thinner. The internal
mechanism was also slightly different than the Early M0100 and are not
interchangable.
>From: "Will Jennings" <xds_sigma7(a)hotmail.com>
>
>Hi,
>Does anyone know what exactly a Heath/Zenith SW-3000-A is? The plaque on the
Hi Will
The SW would indicate that it was a shortwave receiver or tranceiver.
Dwight
>front says Heath/Zenith Computer-based Instruments, and there is a card in
>it with 2 coax connectors that looks like maybe its some kind of broadcast
>crud? The machine itself is a rackmount passive backplane 286, with the
>video I asked about in it. I really need to take a pic, it is one snazzy
>looking piece of hardware.
>
>Will J
>
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>
>
Chris,
Well I tried 1 closed, 2-6 open, and no video... it was set to 2 and 3
closed, rest open, that produces some kinda static white noise crud on the
monitor... The card has a chips + tech chip and an Inmos chip, which I would
guess is the RAMDAC.
Will J
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Among many, many other projects I need to tend to, I am working on finishing
up on my Nova 3 restoration project. The last thing I need to do is replace
the burnt out incandescent light bulbs on the front panel. I wanted to
replace them with LEDs, but white ones cost $4.99 a piece at RadioShack.
Plus, I'm betting that the bulbs take enough power to blow out an LED.
RadioShack doesn't seem to have the exact kind of bulb that is on that
panel. So, might anyone be able to tell me what kind of bulb I need to get
to replace the bad ones, or how I might be able to use LEDs instead, which I
would prefer, as I don't want to be replacing burnt out bulbs all the time.
--
Owen Robertson
Hi,
Does anyone know what exactly a Heath/Zenith SW-3000-A is? The plaque on the
front says Heath/Zenith Computer-based Instruments, and there is a card in
it with 2 coax connectors that looks like maybe its some kind of broadcast
crud? The machine itself is a rackmount passive backplane 286, with the
video I asked about in it. I really need to take a pic, it is one snazzy
looking piece of hardware.
Will J
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>About to scream trying to find docs on a Heath/Zenith video card... It's an
>8-bit ISA board with both a 9 pin and 15 pin video interface, and the
>confounded row o' dip switches... The part number on the board is 150-307...
>Hope someone can help me! BTW I am trying to make it use the 15-pin port
>(VGA)
I have one made by Video Seven that I believe I pulled from a 386 Zenith
PC. The part numbers aren't the same as yours, so the dip settings
probably aren't the same (but in case you care 1 closed, 2-6 open).
I also don't have docs, (nor were able to find them), but with mine, it
auto selects the VGA or CGA based on which has a monitor plugged in. If
both have a monitor, it uses VGA (I wasn't able to get it to work with
both at the same time... maybe if I had docs and knew what the dips did).
The interesting thing with mine is it is one of the few cards I have with
a "Slot 8" jumper, which if I understand it right, was to let you use it
in an XT that had slot 8 reverse wired (or something to that effect).
-chris
<http://www.mythtech.net>
Hi all,
About to scream trying to find docs on a Heath/Zenith video card... It's an
8-bit ISA board with both a 9 pin and 15 pin video interface, and the
confounded row o' dip switches... The part number on the board is 150-307...
Hope someone can help me! BTW I am trying to make it use the 15-pin port
(VGA)
Will J
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Hi,
I have just bought an Osborne Executive computer but I need an image
file of the system disk for it, I have tried to boot with an Osborne 1 disk,
but it does not work, can you help me.
Regards,
Harvey
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