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Line 27: ==Detecting the RSDP== The RSDP is either located within the first 1 KB of the [[EBDA]] (Extended BIOS Data Area) (a 2 byte real mode segment pointer to it is located at ~~0x40:0x0E, which translates to the protected/long mode address 0x4000E~~0x40E), or in the memory region from 0x000E0000 to 0x000FFFFF (the main [[BIOS]] area below 1 MB). To find the table, the Operating System has to find the "RSD PTR " string (notice the last space character) in one of the two areas. This signature is always on a 16 byte boundary. ==Validating the RSDP==

RSDP: Difference between revisions

RSDP (view source)