Section "Monitor"
    Identifier     "My Monitor"
    Modeline       "480x800_60" 31.00 480 504 552 624 800 803 813 831 -hsync +vsync
EndSection

Section "Screen"
    Identifier "My Screen"
    Monitor "My Monitor"
    SubSection "Display"
        Depth 16
        Modes "480x800_60"
    EndSubSection
EndSection