Int 15 Fn 1024 - Topview - "getbuf" - Get Virtual Screen Info [Q] AX = 1024h BX = segment of object handle for window (0 = use default) Return: ES:DI -> virtual screen CX = size of virtual screen in bytes DL = 00h text screen 01h graphics screen See Also: INT 10/AH=FEh,INT 21/AH=2Bh/CX=4445h