Re: FPGA for PCI based servo control board

["alex" <telecomt-at-tht.net>]

Thank you for reassuring comments.
I look at this split just the way to improve I/O  functionality of EMC
without
getting into expense of a custom hardware, even with an average performance.
There are lots of ready available I/O and analog boards for ISA bus off the
shelf.
Just requires a small hardware tweaking - and many devices can be
controlled,
on the cheap.
Regards, Alex
----- Original Message -----
From: Jon Elson <elson-at-pico-systems.com>
To: Multiple recipients of list <emc-at-nist.gov>
Sent: Saturday, April 05, 2003 1:34 AM
Subject: Re: FPGA for PCI based servo control board


>
>
>
> alex wrote:
>
> >OK, now I know!
> >Will ask him again.
> >Jon, I would like very much knowing your opinion on a subject of
unloading
> >real time loops to a small / cheap networked PC.
> >Can it be done in DOS?
> >
> Yes, probably.  What you'd really want is to start the program from DOS,
but
> then have it take over the whole machine, reprogram the timer chip, etc.
> You'd have to write your own real time scheduler, but for only a couple of
> tasks, that is not hard.
>
> >Can it be done it RTLinux in a sense if it will be enough horsepower for
> >16 bit 386 machine to run several loops simultaneously?
> >
> Well, if you do it in integer arithmetic, a 386 might be good enough.
>  You have to understand
> that a 386 is several HUNDRED times slower than modern Pentium processors.
>
> Jon
>