User Manual

PC/104 Module PFM-CVS Rev. B
Appendix D Electrical Specifications for I/O Ports D-3
D.2 DIO Programming
PFM-CVS Rev.B utilizes FINTEK 81866 chipset as its Digital I/O
controller.
Below are the procedures to complete its configuration and the
AAEON initial watchdog timer program is also attached based on
which you can develop customized pro gram to fit your application.
There are three steps to complete the configuration setup: (1) Ente r
the MB PnP Mode; (2) Mo dify the data of configuration registers; (3)
Exit the MB PnP Mode. Undesi red result may occur if the MB PnP
Mode is not exited normally.(These three steps are the same as
programming WDT)