Hi John > 1) add the "inout" choice to the mask pulldown > 2) add it to the mask script, and check to make sure it's a good config > for the bits specified, and redraw the block with the extra direction > port. > 3) modify xps_gpio.m to handle the "inout" case > 4) Write/modify a vhdl module to implement the inout case. I'd guess this > would only be valid for a single-ended port. Anyone done this?
Sounds good. You could write a new pcore and pull in the correct one based on the ROACH flavour you are using. For ROACH1 you will need to modify the drc file for your gpio yellow block. This perform checks to ensure that your design is sane and does not have things that might interfere with each other. It would need to check that there is not another gpio block instantiated that would clash with your block, in particular, any other gpio block should not have the inout option chosen. Good luck and regards Andrew
