A quite large number of system controllers, in particular the common
ones from Intel, don't cache above the 64MB mark.  It seems that these
systems would benefit from lists below and above that mark with the
below list being the higher priority list.  Possibly (*cough*) based
on which controller you have as detected on the PCI bus.

Whilst we're on the topic, this machine has memory half in SDRAM, half
in EDO.  It'd be fantastic if the SDRAM was in a higher priority
list...

Mmmmm....

:)

Dave.