Now, setNodeId does change TPDO and RPDO CobId without testing previous CobId in order to avoid confusion. Standard does not says when 'default value' should be applied. See DS301 - Object 1400h - 15FFh: Receive PDO Communication Parameter page 108.

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/* 

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Define the i/o port global symbol 

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*/

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.globl _io_ports

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_io_ports=0x0000	

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/* 

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0x0000 is the default mapping at reset. (it is 0x1000 for 68hc11)

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*/

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