[Diy_efi] PC ECU?

[ROBO5.8]

Hi MWP,

Well one thing to consider is the X86 interrupt latencies, they are terrible
compared to an embedded controller!  There is tons of stuff for software
development :-)

Also stay away from the X86 I/O structure as it is very slow.  Memory mapped
components are much more efficient.


----- Original Message -----
From: "MWP" <mwp at overclockers.com.au>
To: <Diy_efi at diy-efi.org>
Sent: Monday, May 06, 2002 2:53 AM
Subject: [Diy_efi] PC ECU?


> Hi all...
>
> Well im kinda new to this scene, although i have made my own ign computer
> beofre using a Atmel AVR.
>
> Anyway,
> Has anyone tried using a x86 based PC as the ign/efi computer?
> I have started thinking about it, and can build the hardware needed to do
> it, but im wondering if theres anything ive forgotten about that would
> make the project impossible. As in some quirks of the x86 system that
> would make timing hard, etc.
>
> If i do it, itll be running under a stripped down linux install using the
> RT-LINUX kernel which allows for good embedded software support.
> Apparently it has interrupt latencies better than 15uS on an old pentium
> system.
>
> So what do you guys think?
> Is it worth looking further into?
>
> MWP
>
>
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>



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