> Masks might work for DRQ's and IRQ's, which are small integers anyway, but if 
> something needs multiple memory spaces then you're in trouble.  I don't know 
> that anything would actually want to do this (and if it did, it sounds pretty 
> icky 8-), but mycroft's suggestion would let you do this, whereas the masks 
> would make it difficult

I have devices which uses multiple IO port ranges on the ISA bus (i.e. they
use 32 ports regions at three places in IO space). The current driver for
this card claims to use the whole range between min. and max. port address,
but of course that's simply wrong. With the proposed sheme this could be
fixed (and the driver turned over to bus.h).


Martin