H. Peter Anvin writes:
> [Albert Cahalan]
>> [Alan Cox]
>>>> 1) Why did they disable my videocard ?
>>>
>>> Because your machine is not properly PC compatible
>>
>> The same can be said of systems that don't support the
>> standard keyboard controller for A20 control.
>
> Yes, it can. Unfortunately, some "legacy-free" PCs apparently
> are starting to take the tack that the KBC is legacy. Therefore,
> the use of port 92h is mandatory on those systems.
Not just embedded systems?
> Port 92h dates back to at the very least the IBM PS/2.
>
> Either way, the video card of the original poster is broken in more
> ways than that. Ports 0x00-0xFF are reserved for the motherboard
> chipset and have been since the original IBM PC.
His video card is the motherboard. He has built-in video.
So the port is being used by his motherboard chipset.
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