Multiprocessor system

[Mark Boxsell]

At 02:12 PM 10/02/96 MDT, you wrote:
>
>> >Clint Corbin wrote:
>
>> That's the crux of the matter.  I want a fully sequential system.  The 68HC11
>> does not have enough output compare ports to control 8 fuel injectors in a
>> sequential system.  The software for the main modules would be pretty basic.
>
>Pardon my ignorance here, but what the heck do you need more than 1 output
>compare for?  You only have 1 cylinder firing at a time (except perhaps in
>exotic engines like the V12, I'm not familiar with these...) whether it's a 
>V8 or an inline 4... you only have to keep track of one injector on and off
>time at any given portion of the cycle.  Keep in mind that in an ECU, all
>things are RELATIVE with respect to timing, not ABSOLUTE.
>

>regards
>dn
>
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> Darrell A. Norquay              Internet: dn at dlogtech.cuc.ab.ca     
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Darrell,
         I should point put that in a sequential system the injector pulses
can overlap as you go up the RPM range.
                regards,
                         Mark Boxsell
                         MRB Design