K 10
svn:author
V 7
sobomax
K 8
svn:date
V 27
2006-04-14T03:47:51.000000Z
K 7
svn:log
V 481
MFC: When enabling A20 put upper limit on amount of time we wait for the
keyboard controller to get ready (65K x ISA access time, visually around
1 second). If we have wait more than that amount it's likely that the
hardware is a legacy-free one and simply doesn't have keyboard controller
and doesn't require enabling A20 at all.

This makes cdboot/pxeldr working for MacBook Pro with Boot Camp and
other legacy-free i386 hardware like IBM Netvista S40.

Approved by:	re (scottl)

END