On Sat, Dec 15, 2001 at 10:57:17PM +0100, Witold J. Wnuk wrote:

 > Is 32bit PCI memory space still mapped to the first 4GB in such case? I would 
 > think that it should, for compatibility reasons and convenience.
 > 
 > So either some of these 4GB RAM is mapped above 4GB in physical address space 
 > or is masked by mapped PCI devices.
 > 
 > How is it done? Could someone shed some light on this?

Yah, you need bounce buffers (remember ISA? :-)

PCs suck, sigh.

-- 
        -- Jason R. Thorpe <thorpej@wasabisystems.com>