Dell Inspiron 3500 - Manual (Page 135)

Diagnostic Video Tests B-3
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The 40-column x 25-line character attributes subtest displays four lines of text, in
40-column by 25-line (double-wide) text mode, that demonstrate normal-intensity
video, reverse video, intensified video, and blinking video.
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The 40-column x 25-line character set subtest displays all 256 characters in the ASCII
character set in 40-column by 25-line (double-wide) text mode. Figure B-2 shows part
of the 40-column x 25-line character set subtest screen.
.
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