Int 2F Fn C020  - Ad-dos - Get And Reset Vxd API Status                    [V]

   AX = C020h

Return: AL = 00h if successful
       BX = VxD API Status
       0000h no error
       0001h error
       0100h neither Windows 3.X enhanced mode nor
           Windows/386 2.x is running
       0200h VM API entry point not found (VxD not installed)

Notes: AH=C0h is the default multiplex number; if this is already in use,
     After Dark will try successive values up to AH=FFh
   this call resets the VxD API Status to zero

See Also: AX=1602h,AX=1607h
Index: screen saver;AD-DOS