Compatibility: DPMI 0.9+
Expects: AX    0502H
SI:DI handle of memory block to free
Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
Info: Frees a block of memory that was previously allocated via

No descriptors are freed by this call.  It is the client's
responsibility to free descriptors that map this memory.  You
should free descriptors before freeing the memory.  See
INT 31H 0001H (free LDT descriptors).

See Also: DPMI API
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INT 31H 0502H: Free Memory Block