K 10
svn:author
V 4
jake
K 8
svn:date
V 27
2003-01-08T23:36:16.000000Z
K 7
svn:log
V 371
Split this into bus specific front end(s), so that it can be used by ppc.
This abstracts out all the differences I could see between the netbsd
sparc64 and macppc zs drivers.   In particular the offsets of the csr and
data registers are different, so we use a separate bus handle for each and
use bus_space_subregion to add the bus specific offsets.

Requested by:	benno

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