HP 9800 - Page 17

98750 Diagnostics 5-5
K5 CRT Graphics Test
This test checks the 32k-byte graphics memory and tests all the CRT graphics commands.
Press L..&J, the graphics memory test runs automatically. The test lasts about one minute. To
exit the graphics memory test before it is completed, press (CONTINUE). Errors in the graphics
memory test are displayed, for example:
G RA PH! C S (octal address) HAS (octal patern) NOT (octal pattern)
When the graphics memory test is completed manual control of the cursor and display is
enabled. Here is a description of the control features and the key to press for each feature.
~ Moves the cursor to the left.
~ Moves the cursor to the right.
(=cJ Moves the cursor up.
CIJ Moves the cursor down.
CD
CO
CD
CD
CD
Note
Pressing the above keys once moves the cursor one step. Pressing
the keys all the way down moves the cursor ten steps at a time.
A box outlining the graphics raster is displayed.
Causes three different cursors to appear. One type is displayed each time CI:J is
pressed. Press CI:J three times to view the cursors listed below.
The alpha cursor
(-).
The graphics cursor (+ ).
The full screen graphics cursor.
Clears the display.
Pressing ( SHIFT) at the same time clears the display faster.
Fills the entire display with dots.
Displays grid referenced from the current
X, Y position of the cursor.
Causes any function being performed to loop or be performed continuously until
CD is pressed again.
Displays the cursor position
on the display and the corresponding position in memory.
To continue press
another key.
Random pattern check.
Skip a particular test. (exits the graphics test)
Exits the graphics memory test.
Begins the graphics
memory test.
Walking bit test.
Places the cursor in the center of the display. ( SHIFT) (I) moves the cursor off the
display.
Press any key to continue after an error occurs.
To exit the test, press (
STOP) once to stop the operation then press ( STOP) again to exit the
graphics test.
I