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AX = 0602h BX:CX = starting linear address SI:DI = size of region in bytes
Return:
CF clear if successful CF set on error none of the memory is made pageable AX = error code (DPMI 1.0+) (8002h,8025h) (see #03143)
Notes: Must relock all unlocked real mode memory before terminating process for DPMI 0.9; DPMI 1.0+ automatically relocks real mode memory. Pages at beginning and end will be unlocked if the region overlaps them. Pageability of real mode pages is binary, not a count
Category: DOS Extenders - Int 31h - D
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