physmem module

Access to physical memory

usage:

>>> read_physical_mem( 0xf0000, 0x100 )
>>> write_physical_mem( 0xf0000, 0x100, buffer )
>>> write_physical_mem_dowrd( 0xf0000, 0xdeadbeef )
>>> read_physical_mem_dowrd( 0xfed40000 )