[Diy_efi] Re: Diy_efi digest, Vol 1 #172 - 9 msgs

[Dan Zorde]

We just had a vistit from one of the Microchip FAE's yesterday.  There
is a new range coming out called DSPIC which takes certain complex
commands and implements them in hardware via a DSP type facility in the
chip.  Should really speed up those little suckers and make things like
multiply and divide faster.

Dan  dzorde at erggroup.com



>Message: 3
From: "Tomas Sokorai Sch." <tsokorai at xperts.cl>
>Organization: Xperts Ltda.
>To: diy_efi at diy-efi.org
>Subject: Re: [Diy_efi] Re: Microcontrollers For use on DIY_EFI Systems
>Date: Wed, 17 Jul 2002 11:07:42 -0400
>Reply-To: diy_efi at diy-efi.org
>
>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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