Dell Latitude CP, Справочное и ремонтное руководство

Страница: 117 / 136

Diagnostic Video Tests B-3
and background color intersect, the hexadecimal number
is not visible. Type
y
if each character is displayed cor-
rectly; otherwise, type n . Table B-1 indicates the color in
each of the rows and columns.
Color Attributes Subtest (40 x 25)
The 40-column x 25-line color attributes subtest is the
same as the previous subtest except that the characters
are displayed in 40-column by 25-line (double-wide) text
mode. Type
y
if each character is displayed correctly;
otherwise, type
n
.
Color Bars Subtest
The color bars subtest displays 16 bars in different colors
with background intensity enabled. Under each bar is the
name of the color that should be displayed. Type
y
if
each color bar is displayed correctly; otherwise, type n .
T
ext Mode Pages Test
The Text Mode Pages Test checks the video subsystem’s
ability to map and present all available video pages on
the display or monitor, one page at a time. The test dis-
plays eight successive screens, the first of which contains
21 lines of 77 zeros. The remaining seven screens are
identical to the first, except that each screen substitutes a
different numeral (1 through 7) for the zeros.
Type
y
if all the rows of numbers on each screen are dis-
played correctly; otherwise, type
n
.
G
raphics Mode Test
The Graphics Mode Test checks the video subsystem’s
ability to present graphics mode data and colors. This test
displays a number of different screens, each of which
allows you to check some aspect of graphics mode data
and colors. The following subsections describe the
Graphics Mode Test screens in the order in which they
appear.
320 x 200 Graphics Mode Screens
The Graphics Mode Test displays two successive
320- x 200-pixel graphics mode screens. The first screen
displays three pyramids in red, green, and yellow. The
second screen displays three pyramids in magenta, cyan,
and white. Type
y
if all the pyramids are the correct col-
ors; otherwise, type
n
.
320 x 200 16-Color Graphics Mode
Screen
The 320- x 200-pixel 16-color graphics mode screen dis-
plays a series of Xs in 16 different colors with the name
of the color beneath each X. Type
y
if all the Xs are the
correct colors; otherwise, type
n
.
Table B-1. Color Attributes
Row or
Column
Number
Foreground
Color Background
Color
0 black black
1 blue blue
2 green green
3 cyan cyan
4 red red
5 magenta magenta
6 brown brown
7 white white
8 dark gray
*
black
9 light blue
*
blue
A light green
*
green
B light cyan
*
cyan
C light red
*
red
D light magenta
*
magenta
E yellow
*
brown
F intense white
*
white
* These colors blink during the test.