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M i n i - I T X
E M B - 9 6 5 8 T
Appendix A Programming the Watchdog Timer
A-3
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 of
the key-check logic, it is necessary to perform four write opera-tions
to the Special Address port (2EH). Two different enter keys are
provided to select configuration ports (2Eh/2Fh) of the next step.
(2) Modify the Data of the Registers
All configuration registers can be accessed after entering the MB
PnP Mode. Before accessing a selected register, the content of
Index 07h must be changed to the LDN to which the register
belongs, except some Global registers.
(3) Exit the MB PnP Mode
Set bit 1 of the configure control register (Index=02h) to 1 to exit the
MB PnP Mode.
Summary of Contents for EMB-9658T Mini-ITX
Page 8: ...Mini ITX E M B 9 6 5 8 T Chapter 1 General Information 1 1 General Chapter 1 Information ...
Page 19: ...Mini ITX E M B 9 6 5 8 T Chapter 2 Quick Installation Guide 2 6 Solder Side ...
Page 41: ...Mini ITX E M B 9 6 5 8 T Chapter 3 Award BIOS Setup 3 1 Chapter Award 3 BIOS Setup ...
Page 46: ...Mini ITX E M B 9 6 5 8 T Chapter 4 Driver Installation 4 1 Chapter Driver 4 Installation ...
Page 60: ...Mini ITX E M B 9 6 5 8 T Appendix B I O Information B 1 I O Information Appendix B ...
Page 61: ...Mini ITX E M B 9 6 5 8 T Appendix B I O Information B 2 B 1 I O Address Map ...
Page 62: ...Mini ITX E M B 9 6 5 8 T Appendix B I O Information B 3 ...
Page 63: ...Mini ITX E M B 9 6 5 8 T Appendix B I O Information B 4 B 2 Memory Address Map ...
Page 64: ...Mini ITX E M B 9 6 5 8 T Appendix B I O Information B 5 B 3 IRQ Mapping Chart ...
Page 65: ...Mini ITX E M B 9 6 5 8 T Appendix B I O Information B 6 B 4 DMA Channel Assignments ...
Page 66: ...Mini ITX E M B 9 6 5 8 T Appendix C Mating Connector C 1 Mating Connecotor Appendix C ...