On 15.11.2013 23:04, Paolo Bonzini wrote: > Il 14/11/2013 23:45, Anthony Liguori ha scritto: >> As long as it's x86, > > You mean "as long as it's PC" but... > >> there will always be a keyboard controller if you >> ever want to support more than 1MB of RAM properly since the keyboard >> controller is used to enable the a20 bit. > > ... not really, there is port 92h too. Or you could make the board > always enable it.
http://en.wikipedia.org/wiki/A20_line is saying that this was removed from Nehalem :) -- With best regards Alexey Kardashevskiy -- icq: 52150396
