Int 31/AX=0800h

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DPMI 0.9+ - PHYSICAL ADDRESS MAPPING

AX = 0800h
BX:CX = physical address (should be above 1 MB)
SI:DI = size in bytes

Return:
CF clear if successful BX:CX = linear address which maps the requested physical memory CF set on error AX = error code (DPMI 1.0+) (8003h,8021h) (see #03143)

Notes: Implementations may refuse this call because it can circumvent protects. The caller must build an appropriate selector for the memory. Do not use for memory mapped in the first megabyte

See Also: AX=0002h - AX=0508h - AX=0509h - AX=0801h -

Category: DOS Extenders - Int 31h - D

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