The 18F97J60 can be used in your application by selecting it as the processor in MPLAB, ensuring that the ENC_CS_TRIS macro is commented out, and including the files “ETH97J60.c” and “ETH97J60.h.” There are no additional macros to define for the 97J60; since it uses its own internal MAC and PHY for communication all of the register names and bit names are fixed.