------------------------------ PINPORT ------------------------------
   --------------------------- TECHNICAL FAQ ---------------------------
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Q: What are the arguments passed to the $exsent_init call, and 
   do I have to send anything?

A: The arguments are "switches" which control the behavior of 
   the PLI software.  This is in a global sense, in that if 
   can change the behavior of the PLI operation until the 
   switch is changed.  See the reference manual for more details 
   on the switch options.
   In some cases arguments may have defaults and the software might 
   execute properly because of these defaults if the argument is 
   not passed to the PLI call.  However, it is always a good idea 
   to respect the format for arguments as listed in the reference 
   manual.  

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Q: Is there a way to reset the PinPort hardware from software?

A: There is no mechanism currently to initialize or reset the 
   device hardware.  The $exsent_init command initializes the 
   software, and establishes the connection between the PinPort 
   device and PinPort software.  The registers controlling 
   strobe configuration, and pin strobe enables need to be written 
   each time they change, these registers cannot be reset by 
   software.

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Q: Can I use both strobes on one pin?

A: No, this is not implemented.  If strobe 1 is enabled for a 
   pin, then the strobe 2 settings are ignored for that pin.  
   However, strobe 2 can still be used for any other pin or pins.  

   Another way to say this is that for any pin, if strobe 1 is
   enabled for that pin, it will take precedence over strobe 2, 
   for that specific pin.

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