Jasper Wallace wrote:
> How concerned are you about timeing?
>
> If you just want to read from an IO address every second or so and you don't
> care about interrupts you can do this from userland - see i386_iopl(2) and
> /usr/include/machine/pio.h for inb().

Sorry, I forgot to address that.

Ideally, I'd like to get each channel at a constant sub-second range, at least
10Hz, maybe up to 50Hz (but seems for what I want to do with it 10Hz is plenty
in most cases; so, you may have a couple of high rate channels and a the rest
is 10Hz or less).  Probably something along the lines of this board

http://www.diamondsystems.com/diamondmmat.htm

which offers 16ch @ 12-bit each, with a 512 sample fifo (which generates an
interrupt at half full).

Seems that'd be a bit much to do from userland...

Thanks,
Chris