Port settings

[Cryo <Cryo-at-netti.fi>]

I didn't find any documentation about EMC's port settings.
Can I change step/dir signal polarity somewhere?
My driver needs signal which is normally down and when step coms is
up.

Another thing is timing. Can I change pulse width and other that kind
of stuff somewhere?
I need signal which is like this:

step      |---|
      ----|   |-------

dir      |-------|
      ---|       |----

-- 
 Cryo - Cryo-at-netti.fi