[Coco] FW: Multi-Processor 6809 Computer System

[Kip Koon]

Bill,
Is there a list or collection of Dual 6809 and Multi 6809 computer systems
on the internet anywhere.  I sure would like to see them!  
I am so glad there is so much interest in this subject!
Kip

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Bill Gunshannon
Sent: Tuesday, April 30, 2013 11:52 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] FW: Multi-Processor 6809 Computer System


> The Fujitsu FM-7 computer uses 2 6809 being on of them for generating 
> graphics. There is no vdp on this computer, the second 6809 is used 
> exclusively for generating 8 color 640x200 pixels graphics.
>
> Some dual 6809 arcades do the same.

Systems with more than one processor were more common than you might think,
but in most cases it was not any kind of multi-processing.  The second
processor was used exclusively for IO.  The Tandy Model 16 had an entire Z80
compouter system (the Model II) built into it for such a task.  When using
the M68K the Z80 was an IO processor and all IO went thru it.  There were
others, (Midwest Scientific was one, I thinkh dual 6800's).

bill

>
>
> On Sun, Apr 28, 2013 at 10:42 PM, Mark McDougall
> <msmcdoug at iinet.net.au>wrote:
>
>> FWIW there were a couple of arcade boards that used dual 6809's for 
>> which there are schematics available... Time Pilot 84 is one example. 
>> There was a master-slave relationship between them - might be of 
>> interest to some to check out the schematics!?!
>>
>>
>> On 29/04/2013 12:26 PM, Mark McDougall wrote:
>> > 2 minutes on Google...
>> >
>> > <http://etd.ohiolink.edu/view.cgi?acc_num=ohiou1183654502>
>> >
>> >
>> > On 29/04/2013 12:12 PM, Lothan wrote:
>> >> HARDWARE DESIGN OF A MULTIPROCESSOR SYSTEM WITH FIVE MOTOROLA 
>> >> MC6809E MICROPROCESSORS
>> >
>>
>> --
>> |              Mark McDougall                | "Electrical Engineers do
>> it
>> |  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"
>>
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>
>
>
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-- 
Bill Gunshannon          |  de-moc-ra-cy (di mok' ra see) n.  Three wolves
billg999 at cs.scranton.edu |  and a sheep voting on what's for dinner.
University of Scranton   |
Scranton, Pennsylvania   |         #include <std.disclaimer.h>



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