I have a board on which core for VME64 bus is implemented and it communicates with other boards on VME64 bus using only 1 connector (P1, 5 rows, 32 pins on each row, total 160 pins) instead of 2 connectors (P1 and P2). I am trying to understand its working in both Bus controller and Remote terminal modes.
I have to modify the connector pinouts to make room for free pins on the P1, 160-pins connector. There is lot of info available about the bus but what I could not find out is the minimum pins required to use VME64 bus?
I can live with only 24-address lines on the bus. But I don't know which other lines I can compromise on to make room for free pins on the P1 connector?