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3.7
DISPLAY TEST
Subtest 01
Subtest 02
VRAM read/write (Execution time: 1 second)
This
test
writes
constant
data
(FFFFH,
AAAAH,
5555H, OOOOH) and address data to the video
RAM~
it then reads the data out and compares
it the
original data.
Character attributes (Execution time: 1 second)
This
test is
for
checking the various types of
displays:
Normal Display
Intensified Display
Reverse Display
Blinking Display
In the case of color displays, all seven colors
used
(blue,
red,
magenta,
green,
cyan,
yellow,
white)
are
displayed.
The
background
and
foreground
colors
can
then
be
checked
for
brightness.
The
display
below
appears
on
the
screen when this test is run.
CHARACTER ATTRIBUTES
NEXT LINE SHOWS NORMAL DISPLAY.
NNNNNNNNNNNNNNNNNNNNNNNN
NEXT LINE SHOWS INTENSIFIED DISPLAY.
I I I I I I I I I I I I I I I I
NEXT LINE SHOWS REVERSE DISPLAY.
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
NEXT LINE SHOWS BRINKING DISPLAY.
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
PRESS [ENTER] KEY
3-13
BLUE
RED
MAGENTA
GREEN
CYAN
YELLOW
WHITE
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