Mark, Since I wrote that last message in April, we've pretty much decided to make all the I2C peripherals in our system strictly slaves. As we're building them up out of TI MSP430 microcontrollers, this simplifies our microcontroler code and associated FPGA design. We intend to use a ancillary open collector /INT line from all the microcontrollers to tell the main Linux processor when to poll the I2C bus for pending messages. I'll probably attempt some funky LRU-like heuristic to optimize the polling. I don't know the details of the 2.5 "driver model". Would it allow for two independent processes to respond to I2C messages from different slaves? Can you give me any pointers to the relevant 2.5 kernel docs? I'm still curious, nonetheless. Thanks, -- Brent Roman Software Engineer Tel: 831 775 1808 425 Clinton St., Santa Cruz, California, 95062 mailto:brent at mbari.org http://www.mbari.org/~brent
