======= Read me for Xboard document ==========
======= ibus_e.pdf                  ==========
==============================================
Document for Xboard includes
    1. Hardware specifications
    2. Wiring
    3. Software development
    4. How to design a Xboard
    5. Sample circuit and source code for simple DI/DO Xboard
    
For API functions of each Xboard, please refer to its head file for C language.
for example:
    X310: X310.Lib and X310.h

Note1: Same Xboard can be used in different CPU,
       the lib for 40MB CPU (I-7188XA, 7188XB, 7188EX) 
       and 80MB CPU (I-7186EX) is different.
       For example X310: lib location 
        for 7188XB
           CD:\Napdos\7188xabc\7188xb\demo\basic\bc_tc\lib\xboard\
        for 7186EX
           CD:\Napdos\7186e\demo\basic\bc_tc\lib\xboard\
           
Note2: For RS-232/485/422 Xboard (for example: X505, X506, ect)
       there is no lib and head file needed. They are directly supported
       in the CPU lib (for example: 7188XBL.Lib, 7186EL.lib, etc).
       You can use the COM port on the Xboard directly.
       The software programming skill is like using 
       the on board RS-232/485.