INT 10 - VESA XGA BIOS Extensions - RETURN XGA SUBSYSTEM INFORMATION AX = 4E01h DX = XGA handle (0 to number of XGAs-1) ES:DI -> 256-byte buffer for subsystem information (see #00071) Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AX=4E00h,AX=4E02h