Jonathan Stone <jonathan@DSG.Stanford.EDU> writes:
> Also, afaik, the indirect registers may need to be written as two
> separate bytes, and at least the pmax requires some delay between the
> byte accesses (which arent required for the ioasic bus in general).
> Is tthe w16 hook is necessary there anyway, or do we derive a new
> bus in cases like that? urgh.

last i heard, the way to do the right thing there was to provide MD
read and write register hooks (which may in turn use a bus space tag,
or whatever) to insert delays as appropriate?

the example that i'm thinking of is the use of ZS_DELAY and the
read/write register functions in the sparc zs driver, and the use of
special read/write functions in various lance drivers...  i'm not sure
anybody'd be willing to call either of those great examples, though.
8-)


cgd
-- 
Chris Demetriou - cgd@netbsd.org - http://www.netbsd.org/People/Pages/cgd.html
Disclaimer: Not speaking for NetBSD, just expressing my own opinion.