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3.7
Display Test
To execute the Display Test, select 4 from the DIAGNOSTIC TEST MENU, press Enter and
follow the directions displayed on the screen. The Display test contains ten subtests (for the
400CS, plus one more for the 400CDT) that test the 400 series display in various modes.
Move the highlight bar to the subtest you want to execute and press Enter.
Subtest 01
VRAM Read/Write
This subtest writes constant data FFFFh, AAAAh, 5555h, 0000h and address
data to video RAM (1MB). This data is then read from the video RAM and
compared to the original data.
Subtest 02
Character Attributes (mode 1, 13h)
This subtest displays the following character attribute modes; normal, intensi-
fied, reverse, and blinking as shown in the display below. The character
attribute modes display the foreground color and intensified color (16 colors or
16-level gray scale) using black, blue, red, magenta, green, cyan, yellow, and
white from the color display. The display below appears on the screen when
this subtest is executed.
CHARACTER ATTRIBUTES
NEXT LINE SHOWS NORMAL DISPLAY.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NEXT LINE SHOWS INTENSIFIED DISPLAY.
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII
NEXT LINE SHOWS REVERSE DISPLAY.
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
NEXT LINE SHOWS BLINKING DISPLAY.
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
PRESS [Enter] KEY
3-14
00 08 ; BLACK
01 09 ; BLUE
04 0C ; RED
05 0D ; MAGENTA
02 0A ; GREEN
03 0B ; CYAN
06 0E ; YELLOW
07 0F ; WHITE
400 Series
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