Int 21 Fn 2505  P - Phar Lap 386/dos-extender - Set Real-mode Interrupt V  [E]

   AX = 2505h
   CL = interrupt number
   EBX = CS:IP of real-mode interrupt handler

Return: CF clear

Note:  this function is also supported by FlashTek X-32VM

See Also: AX=2503h,AX=2504h,INT 31/AX=0201h