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My target board have two MACs, one in MCU chip,the other is connect to MCU local bus. I like to use RL-TCPNET in my board. How to use?
Given the ridiculously high cost involved to get access to the TCPnet source, I really can not recommend that route.
Any nonstandard use of the stack will be way outside the boundaries of Keil support, so it would be much better to go with another stack where you can discuss any problem on a web forum and get other interested people to share the work load.