HP OmniBook 800CCT Service Manual page 41

the mouse position to change. Press both buttons and move the mouse in all directions, then
press a key again to exit the test. This will end the text mode mouse test.
IMPORTANT NOTE ON THE USE OF BOTH BUTTONS: any time both buttons are pressed
down, a release of just one button will NOT be recognized. BOTH buttons must be released to
clear the button status.
If verbose mode is enabled with Ctrl+V, then all switch changes are reported in a scrolling
window along the left edge. The following codes are used to report the various switches:
IN the left, or inner bumper is engaged
OUT the right, or outer bumper is
engaged
TOP the top bumper is engaged
BOT the bottom bumper is engaged
LEFT the left mouse button is engaged
RIGHT the right mouse button is engaged
Note: in PS2 mode, only LEFT and RIGHT are reported.
Whenever a button or switch engages or disengages, the current state of all switches and the
current mouse position is scrolled up into the display, and then the new state of the switches is
reported. If it is a button that is pressed, then the mouse position variables are also cleared to 0.
Mouse positions are indicated in a unit called mickeys, and there are roughly 2950 mickeys in
the horizontal (X) direction, and 1695 mickeys in the vertical (Y) direction. If the mouse is
moved very rapidly (faster than practical use will permit), signal loss occurs. To test for
acceptable signal strength the mouse should be moved right and left against both edge stops
repeatedly. After each full cycle, the time taken to complete the cycle together with the count of
lost mickeys is displayed in a table in the lower right portion of the screen. If the number of lost
mickeys is greater than the set limit and the time to complete the cycle is also longer than the set
limit, then Diag will report a MICKEY error. To clear the table of results (either to retest or run
the test in the perpendicular direction) press both mouse buttons simultaneously.
The TIC column reports the number of timer tics (1/18
one bumper to the opposite one and back again. The CUR column reports the number of
mickeys off for the current motion cycle. The MIN column reports the minimum counts ever
recorded at that speed. The AVG column reports the average number of counts at that speed.
The MAX column reports the maximum counts ever recorded at that speed.
A sample screen dump for the text mode mouse test appears below. The results on the left half
of the display were generated from having verbose mode enabled with Ctrl+V. The results in the
lower right corner were generated by moving the mouse right and left against the bumpers.
22
th
of a second per tic) taken to move from