NetBSD master CVS tree commits

[source%NetBSD.ORG@localhost]

cgd
Wed Jul  9 20:11:00 PDT 1997
Update of /cvsroot/src/sys/arch/i386/i386
In directory netbsd1:/var/slash-tmp/cvs-serv5136

Modified Files:
        machdep.c 
Log Message:
undo the change done (at my suggestion) in rev 1.236.  That is,
mark all of 0 -> IOM_BEGIN as used, even though there are some regions
which are left for use by the BIOS (namely, the first 4k page and the
area after biosbasemem*1024 but before IOM_BEGIN).  Drivers wishing to
manipulate these areas should map them specially, with _i386_memio_map()
rather than bus_space_map() or i386_memio_map().