INT 15 - DESQview/X - DVDOS4GX.DVR - INSTALLATION CHECK
AX = BFDEh
BX = 0000h
Return: AX = ??? (0003h)
BX = FFFFh

See also: 15BF02

15BFDEBX0000 - DESQview/X - DVDOS4GX.DVR - INSTALLATION CHECK