[Diy_efi] PC-laptop based efi

[Marcell Gal]

Hi,

> My cnc runs under nt 4.0 sp 6 with a real time add on I will have to see
> what it is but I do believe it to be QNX. The pc updates the motor
> controllers in the millisecond range as the largest move it will make
> without an up date is around 3 msec..

yes, a PC can be programmed like a microcontroller. IIRC today's 
PC's have the timing interrupt capability that is sufficient for an
eventqueue. (And they have precision timers, so under
1ms timing-precision is clearly achievable).

But you rarely operate your CNC under -20C temperature, and
shake the house under operation like a vehicle shakes.
Notebooks might be perfect for amusement and non-critical 
displays (maps, mileage-statistics, tuning etc..) but why would you
put essential tasks on them, when you can put those functions
to an uC for $2 extra? (compared to a little more dummy uCs
that can only do the TPU  - Time Processing Unit - functions)

Btw after I programmed my 2nd program into atmel mega128 (avr)
I gave away my dozen leftover PIC controllers for free (from earlier
 projects). The atmel family is a nicer, friendlier design (even I learnt 
PIC earlier) and saves lotsof human resources for a similar unit-price
- actually atmel is cheaper at the high-end.

   Marcell

http://www.x-dsl.hu/genboard/

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