On Fri, 23 Feb 96 12:44:07 EST 
 "Gordon W. Ross" <gwr@mc.com> wrote:

 > The hard part with probe is NOT recognizing some other type of
 > video board as the one your driver supports.  The problem is,
 > most video boards look like a memory board (all look the same).
 > One has to kludge around looking for minor variations between
 > boards, and disallow "impossible" configurations, etc.
 > 
 > If the drivers all attach (even those that should not) then
 > you could end up opening mismatched driver/hardware and get
 > rather strange results as (i.e.) the cg4 driver tries to talk
 > to a cg6 board...  (So, don't open the "false match" ones! 8^)

BTW, the pfour framebuffers have ID registers that tell you the type and 
resolution of the framebuffer.

--------------------------------------------------------------------------
Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
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