Compatibility: DPMI 1.0+
Expects: AX    0101H
DX    base selector of selector block to free
                                                                  
Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
                                                                  
Info: This frees an allocation obtained via INT 31H 0100H (allocate DOS
memory block).  It also frees up the LDT descriptor(s) created by
that call.

See Also: DPMI API
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INT 31H 0101H: Free DOS Memory Block