See TI Aplication Notes. Author Mr. Zoran.Interface between 860 and HPI
I did interface only between mpc8260 and expansion bus of 6203. I used local bus of PowerQuicc II for this object
As I said, I worked with C6203 with Expansion bus. Yes some control signal like XCS routed through PLD. 32 bit Local bus interfaces to Expansion bus through buffer.
Roman