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640x200 Graphics Mode Check
check your 640x200 graphics mode, press 6 then
To
screen displays three patterned squares against a contrasting
background, as shown below.
640X200 GRAPHICS MODE CHECK
If the patterns on your screen are clear and distinct, press Y and then
If any pattern is not clear, first check the adjustment of your
Enter.
monitor, and then make sure that both ends of the cable are plugged
in firmly. If a problem still exists, press
error message.
Screen Paging Check
To check the screen paging of your monitor, press 7 and
video RAM on the color graphics adapter is divided into eight
independent display pages. This test checks the eight pages by first
filling all eight with a number corresponding to the page, and then
displaying each page in turn. You see the following pattern for screen
0.
C-16
Performing System
Is the display correct (Y/H)?
Diagnostics
Enter.
and
to display the
N
Enter
The
I
The
Enter.
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