usb keyboard works in bios, not in DF

[Matthew Dillon]

    You have to turn off legacy keyboard support in your BIOS, otherwise
    it will try to trap the USB keyboard and emulate the PS/2 one, which
    interferes with the kernel's ability to access the USB keyboard directly.

    This will sometimes make the USB keyboard fail to work during the boot
    stage(s), but then work properly in the kernel (except that the debugger
    probably won't work).

					-Matt
					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>