> A little do-nothing meant to create a slight I/O delay by clearing
> the prefetch queue and forcing the CPU to re-read memory. Not really
> effective anymore, better to use OUT 4Fh,AL and using the motherboard
> AT-BUS to provide a stable delay period.
Actually, it is quite necessary, if you're switching to protected mode. 
Otherwise, the system will do incorrect adress-translation.
 -- SPEED 2.00 [NR]: -- Lord Nihil -- This is a microsoft-free zone.
--- BBBS/NT v3.33 How
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