Int 66 Fn 10  - Pendos - Tdmouse.exe - Get ???                             [n]

   AH = 10h

Return: CF clear
   AX = 0000h
   BX = ??? (0012h)
   DX:CX -> TDMOUSE INT 33 handler (IRET to hide mouse from other apps)
Program: TDMOUSE is a PenDOS hardware driver which allows a mouse to emulate
     a touchpad; PenDOS is a set of programs by Communication Intelligence
     Corporation which makes applications pen-aware