I certainly have nothing against using a derivative with I2C support in the interest of potentially communicating with other hardware in the future. But would that be the best choice for what is essentially the computer's internal bus?

If we're dealing with full-blown 8052's with potentially 32 I/O lines available it seems we ought to consider a full parallel approach for communicating between the individual 8052s on the board. Perhaps an 8-bit bus driven by the central 8052 that connects to all the other 8052s, a clock line, and a select line for each of the individual 8052s on the bus that the central 8052 may want to talk to.

Regards,
Craig Steiner