Using The Touch Screen; Invoking Ipl - Symbol PDT 7200 Series Product Reference Manual

Using the Touch Screen

If the system supports a touch screen, then the touch screen can be used instead of the
keyboard to control IPL.
Cursor Up/Down
Enter
Backlight
Contrast

Invoking IPL

To deliberately invoke the IPL, hold the trigger while performing a cold boot by pressing and
holding the Power Icon for the required amount of time. If the trigger is pressed when the
terminal is reset, then control is passed to IPL instead of to the BIOS. If the trigger is not
pressed, then IPL verifies all mandatory partitions to ensure that they are present, and
verifies the checksum on all checksummed partitions (IPL, Partition Map, BIOS, and
Setup). If any of these partitions is missing or corrupted, then control is automatically
passed to IPL instead of the BIOS, so that the corrupted data can be reloaded before it
causes any problems. If IPL is invoked accidentally, then either reset the terminal again
without holding the trigger, or select Run System option in the baud rate menu.
When IPL is invoked (by cold booting while pressing the trigger, or by detecting a corrupt
flash partition), IPL sounds the beeper to indicate that IPL has been invoked, and displays
the Copyright Screen.
Terminal Configuration: Building and Sending the Hex Image
Touching the screen on the up or down arrows on the screen is exactly the
same as using the Cursor Up/Down keys on the keyboard.
Touching the bottom of the screen exactly the same as pressing the Enter
key on the keyboard.
This can only be controlled from the touch screen on the 7200. Each tap on
the backlight control area of the 7200 screen will toggle the backlight (if
present) between on and off.
The screen contrast can only be adjusted by the touch screen on the 7200.
Tapping the contrast control area on the 7200 screen increases the screen
contrast by one step with each tap. Continually pressing the contrast control
area on the 7200 screen decreases the contrast at a rate of approximately
five steps per second.
7-15