[Diy_efi] Re: Microcontrollers For use on DIY_EFI Systems

[huw scourfield]

It's true that divides can be a pain, but at 5MHz 20-50 loops hardly takes
any time at all, write the code correctly and you should have all the time
needed for this.(Still a bit archaic though).
    Huw
----- Original Message -----
From: "Tomas Sokorai Sch." <tsokorai at xperts.cl>
To: <diy_efi at diy-efi.org>
Sent: Wednesday, July 17, 2002 4:07 PM
Subject: Re: [Diy_efi] Re: Microcontrollers For use on DIY_EFI Systems


> On Wednesday 17 July 2002 10:51, Toffer Liu wrote:
> > I was wondering would it be possible to use something like a PIC16F877
as
> > an ECU? 8K flash, 256 eeprom, 392 ram, 2 CCP pins, 35 instructions risc
> > processor, 200ns per inst.?
>
> Hmmm, have you ever tried to multiply or divide 2 integers?
> If you use Microchip's math library, have you seen how many cycles does a
> divide take?
> Calculations are out of the question for this kind of uC.
>
>
> Tomas
>
>
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