Int 2F Fn 4A33  - Windows95 - Check Ms-dos Version 7                       [D]

   AX = 4A33h

Return: AX = 0000h for MS-DOS 7.00+
       (officially) BX,DX,SI,DS may be destroyed
       (undoc) DS:DX -> ASCIZ primary shell executable name
       (undoc) DS:SI -> CONFIG.SYS SHELL= command line (counted string)
       (undoc) BH = ??? (0000h)
       (undoc) BL = ??? (0000h)
   AX nonzero (usually 4A33h) if MS-DOS 6- or other DOS

See Also: AX=1611h,INT 21/AH=30h