Int 2F Fn FB43  PU - Borland C++ 3.0 DPMIload.exe - Null Function          [E]

   AX = FB43h
   BX = subfunction (at least 0000h-000Eh)

Notes: this function is only present in protected mode; it does nothing but
     an immediate IRET
   DPMILOAD.EXE itself calls various subfunctions:
       subfunction 0004h is called with CX=selector of ???, DI=selector
       of DPMILOAD data
       subfunction 0008h is called with CX=selector of DPMILOAD data

See Also: AX=FB42h/BX=0001h