Hello all,

    Forgive me if the answer to this question is obvious, but I fail to 
see how this happens.  To make a very long (and aggravating) story very 
short, xdm was causing 'shared memory corrupt' errors in my correctly 
configured ed0 driver by reading from the card's shared memory 
through /dev/mem.

    How does reading from /dev/mem affect the memory that is being read?  
Specifically, why was reading from the card's shared memory corrupting 
this memory for the ed driver?

Thanks in advance,
  Garth.