On Tue, Dec 18, 2001 at 11:36:50AM -0800, Jun Sun wrote: > > > I see. So isa_slot_offset is for isa_read/isa_write, although I still don't > > > see what kind of drivers would use isa_read/isa_write. > > > > Dumb answer - ISA drivers. > > (Hmm, do you mean "dumb question"? :-0) Somewhere I heared there are only dumb answers, no dumb questions :-) > I was thinking most ISA dirvers should simply use inb/outb to access ioports. > Don't really any ISA devices have their own memory space. But, anyway, who > can still remember those dark ages? Isa_slot_offset is related to memory mapped I/O, in and out are not memory mapped I/O. Ralf