Atari 1200 XL, Field Service Manual

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ANY VIDEO TEST
This test verifies the console's ability to generate a video (TV) display. This test also checks for
pattern sensitivity of the ANTIC chip.
Enter the command letter A and press RETURN to activate this test.
Figure 3-4 illustrates the screen display for the Any Video Test. NOTĆ: Figure 3-4 is a black
and white representation of a colored screen.
The screen should have a black background with eight vertical bars. Half of the vertical bars
should be narrow, and the other half, rnuch wider. A horizontal bar should appear across he top
of the screen. From the left to right, the shade of color on the horizontal bar should change. On
the right of the bar, two Vs should be displayed, right side up; one in normal video and the
other in inverse video.
Figure 3-4. Any Video Test Screen
1200XL Home Computer
Field Service Manual
3-6