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

   VxD = 0012h

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 0976)
Values for EBIOS (VxD ID 0012h) service number:
 00h   get EBIOS version
 01h   get unused memory

See Also: #0975,#0977