Display Test - Toshiba T3300SL Maintenance Manual

3.7

Display Test

To execute the Display Test, type 4 from the DIAGNOSTIC TEST MENU, press Enter, and follow
the directions displayed on the screen. The Display Test contains ten subtests that test the
T3300SL's display in various modes. Type the number corresponding 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 (256KB). This data is then read from the video RAM and compared to the
original data.
Subtest 02 Character Attributes Mode 1 and 13h
This subtest displays the following character attribute modes: normal, intensified,
reverse, and blinking as shown in the display below. The character attribute modes
display the foreground color and intensified color (16 colors or 16 levels of gray) 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
3-16
00 08 ; BLACK
01 09 ; BLUE
04 0C ; RED
05 0D ; MAGENTA
02 0A ; GREEN
03 0B ; CYAN
06 0E ; YELLOW
07 0F ; WHITE