Hi Tony, Your ideas are basically inline with mine. I want to have basically 4 Size-1 tram slots on the board with some type of controller to boot the network from EEPROM. The topology is going to be fixed as a small network like this doesnt need to flexible. And besides, I can always use virtual channels to connect it up any way I want (with a slight performance hit). Also I might add a PC104 bus for further expansion. Do you have schematics of your board so that I can reference the design?? Apparently, someone else thought about this too. Avanced Micro Peripherals Ltd wanted to do something like this as well, but the project got canned :-( As for the microcontroller, I might use either a transputer, FPGA, or a motorola chip (havent decided)... Ram