Int 10 Fn 8200  - Video - Ax Pc - Get/set Scroll Mode                      [J]

   AX = 8200h
   BL = new scroll mode or FFh to get current mode
       00h dynamic, 01h software

Return: AL = scroll mode (current mode if BL=FFh, previous mode otherwise)

See Also: AH=06h,AH=07h