Int 20  P - Microsoft Windows - Apsienum - Vxd Services                    [W]

   VxD = 33FCh

Note:  the desired VxD and service number are identified by the data
     immediately following the INT 20 instruction, as in:
       INT 20h
       DW  service number
       DW  VxD identifier

See Also: INT 2F/AX=1684h"DEVICE API",INT 30"Windows",#0961,#1032

(Table 1031)
Values for ASPIENUM (VxD ID 33FCh) service number:
 00h   get ASPIENUM version???
 01h   ???
 02h   ???
 03h   ???

See Also: #1030,#1032