Int 2F Fn FB42  PU - Borland C++ 3.0 Dpmiload.exe - Simulate Real Mode In  [E]

   AX = FB42h
   BX = 000Dh
   CX = number of words to copy from protected-mode to real mode stack
   DL = interrupt number
   DH = flags
       bit 0: reset the interrupt controller and A20 line
   ES:DI -> real-mode call structure (see #2819 at INT 31/AX=0300h)

Return: CX = status
       0000h successful
       0001h failed

See Also: INT 31/AX=0300h