Aaeon PCM-8152 User Manual page 48

C o m p a c t B o a r d P C M - 8 1 5 2
There are three steps to complete the configuration setup: (1)
Enter
the MB PnP Mode; (2) Modify the data of configuration
registers;
(3) Exit the MB PnP Mode. Undesired result may occur if the
MB
PnP Mode is not exited normally.
(1) Enter the MB PnP Mode
To enter the MB PnP Mode, four special I/O write operations
are to
be performed during Wait for Key state. To ensure the initial
state
B-3
Appendix A Programming the Watchdog Timer