Int 2F Fn 1684  - Ms Windows - Ios - Get Api Entry Point                   [W]

   AX = 1684h
   BX = 0010h (virtual device ID for IOS device) (see #2329)
   ES:DI = 0000h:0000h

Return: ES:DI -> VxD API entry point (see #2341)
         0000h:0000h if the VxD does not support API in current mode

See Also: AX=1684h"DEVICE API",INT 20"Windows"

(Table 2341)
Call IOS entry point with:
   EAX = function number
       0000h ???

       Return: CF clear if successful
               AX = 0000h
           CF set on error
               AX = FFFFh
       0001h check if ???

       Return: CF clear if successful
               AX = 0000h
           CF set on error
               AX = FFFFh
       0002h requestor services???
       DL = service number???

       Return: CF clear if successful
               AX = 0000h
               DX = ???
           CF set on error
               AX = FFFFh

       Note:   calls "IOS_Requestor_Service" (see INT 20"Windows")
       0003h ??? (copies five bytes of data internally)

       Return: CF clear if successful
               AX = 0000h
               EDX = ???
           CF set on error
               AX = FFFFh
       else

       Return: CF set
           AX = FFFFh

See Also: #2340,#2342