On Mon, 2 Jul 2001, Philip Blundell wrote:

> >I'm also not sure if you can hook multiple MEMCs together with <32k pages.
>
> I can't think of any reason why it wouldn't work, in theory.

Having looked at memcreg.h a bit more, it seems there aren't all that many
bits spare in the page table entries.  With 4 KB pages, there are enough
for 256 physical pages (1 MB).  With 8 KB pages, 512 (4 MB), with 16 KB
pages, 1024 (16 MB) and with 32 KB pages, 2048 (64 MB).  The last of those
would overflow the space for physically-mapped pages, though I suppose
that need not be a problem if the OS isn't confused by it.

-- 
Ben Harris                                                   <bjh21@netbsd.org>
Portmaster, NetBSD/arm26               <URL:http://www.netbsd.org/Ports/arm26/>