Matrox Corona Installation And Hardware Reference page 37

Multiple display boards Note that if you have more than one display board, the
MGA Monitor property sheet lists all of the boards. Select
the board number for the monitor you wish to configure,
and then select a monitor.
3. To ensure that the selected entry is suitable for your
monitor:
a. Click on the Properties button. From the presented list,
select the resolution and pixel depth that you want to
test and then follow the instructions in the scrollable text
field. Resolutions exceeding that of the selected monitor
do not appear in the list.
b. Click on the Test button to ensure that the video
parameters selected are appropriate for the monitor.
c. If your monitor does not display a stable test screen, the
parameters are not suitable for your monitor. Click on
the Cancel button to close the MGA Display Properties
dialog, run the MGA Display Properties utility again,
and select another monitor. Repeat the test.
Note that in test mode, you can try to optimize the
vertical frequency for any of the supported resolutions.
4. Click on Apply. An mga.inf file is created in the
\<
SYSTEMROOT
Windows for the mga.inf changes to take effect. Then, you
can use the Settings property sheet of the MGA Display
Properties dialog box to select your display resolution.
Deleting the mga.inf file will remove all monitor limits on
the resolution; however, the refresh rate will default to
60 Hz.
5. When the monitor timings are set correctly, restart
Windows for the new mga.inf settings to take effect.
MGA Display Properties
>\SYSTEM32 directory. You must start
37