[Coco] [Color Computer] Motorheads and the CoCo...

Frank Pittel fwp at deepthought.com
Wed Jun 15 13:17:34 EDT 2005

Once upon a time I worked in a engine test lab and built a
control computer for a test engine. The engine was originally
built to run with a carb and test requirements called for fuel
injection. After looking around for an off the shelf after market
fuel injection system without luck I built one. To help make the
engine run more consistantly I added spark control to the project.

To pull it off I used a 68hc11 microcontroller and would suggest that
you consider doing the same. By the time you add all the external hardware
that you'll need to get a 6809 to control an engine you're going to
be spending a lot more money then had you gotten a prototype board
using the 68hc11. If you try to implement the PWM for the fuel
injectors in software you'll run out of cpu cycles.


On Tue, Jun 14, 2005 at 10:35:51PM -0700, George Ramsower wrote:
> It's been a dream of mine for several years to build a Coco to handle the 
> engine management system for a fuel injected gasoline engine.
> I truly believe it can be done, using the proper support chips to handle the 
> grunt work.
>  The details and theory can be discussed as this thread (if it does) can be 
> elaborated on, if there is an interest.
> Is there anyone interested in this sort of   project?
> George. 
> Brought to you by the 6809, the 6803 and their cousins! 
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