Memory Addresses of the V7-MIRAGE It is necessary to make sure that all I/O and memory addresses reserved for the graphics board are not used by other hardware devices. Your board uses the following addresses: I/O addresses: Standard VGA I/O 3B0-3DF Graphics Engine x2E8-x2EA Memory addresses: Video RAM A000-BFFF Video ROM C000-C7FF Note: Please note that some fax and modem cards also use the address 2E8 (COM#4). In this case deactivate COM#4 and use another address for the corresponding hardware device.