PC based CNC system architecture/Black Box

Doug wrote:
<big snip of some good points>I actually see the biggest problem as

>hardware timers, and if I had any time, I would put a number of
>timers and bit I/O lines onto a DIMM stick that fits into a free
>memory slot (and emulates memory I/0, but of course is Not memory)
>where the cpu has the absolute minimal latency to respond to
>interrupts, and do I/O to the outside world.

Doug,

Interesting thought...
Maybe that's why every Card for CNC i've ever seen has at least one
hardware timer on it.

Also why I keep mentioning the 'newest' hardware timer on the pc
architecture, the pentium RDTSC instruction...

Ballendo