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The objective of this test is to determine whether the keys depressed match
with their Scan and ASCII codes.
the ASCII code of the key is shown.
Use <CTRL><BREAK> key to abort this test.
4.6 Video Diagnostics
The Video diagnostics include the following for both Monochrome and Color
display adapter cards:
* Sync Test
* Adapter Test
Memory.
* Attribute Test
Display
* 80 x 25 Display Test
character set of the display
adapter.
If you have a color display card installed, you will have the following
additional diagnostics functions.
* 40 x 25 Display test
* 320 x 200 Graphics test
* 640 x 200 Graphics test
* Page selection test
* Color test
The Video diagnostics functions do not require any inputs from the user.
However, the test results are displayed on the screen.
4.7 Miscellaneous Diagnostics
These include the following tests :
* Serial Communication Port Test.
* Printer Port Test.
Serial Communication Port Test
This test requires a special RS-232C connector to be plugged on
The details of this connector are as below :
* RD & TD Shorted.
* DSR & DTR Shorted.
Every time a key is depressed the scan code &
-
Checks the Sync capability.
-
Performs test on the Display
-
Checks the attributes of the
-
Checks the 80 x 25
to the port.
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