X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 31 - dpmi 0.9 api - protected mode

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INT 31 - DPMI 0.9 API - protected mode - RELOCK REAL MODE REGION
        AX = 0603h
        BX:CX = starting linear address
        SI:DI = size of region in bytes
Return: CF set on error
            none of the memory is relocked
        CF clear if successful
Note:   pages at beginning and end will be relocked if the region overlaps them
SeeAlso: AX=0602h

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