IBM pc memory map
From Computer History Wiki
This is a simple memory map of an IBM PC. The video ROM/RAM areas are assumed to be VGA.
00000000-0009f7ff : System RAM 0009f800-0009ffff : reserved 000a0000-000bffff : Video RAM area 000c0000-000cbfff : Video ROM 000cc000-000d3fff : Adapter ROM 000f0000-000fffff : System ROM 00100000-0bfeffff : System RAM
