Int 31 Fn 000D  P - DPMI 0.9+ - Allocate Specific Ldt Descriptor           [E]

   AX = 000Dh
   BX = LDT selector

Return: CF clear if successful
       descriptor allocated
   CF set on error
       AX = error code (DPMI 1.0+) (8011h,8022h) (see AX=0000h)

Notes: free descriptor with INT 31/AX=0001h
   the first 16 descriptors (04h-7Ch) are reserved for this function, but
     some may already be in use by other applications under DPMI 0.9;
     DPMI 1.0 guarantees 16 descriptors per client
   not supported by MS Windows 3.0 in Standard mode

See Also: AX=0000h,AX=0001h