ULX3S_verilog.faq

Q: Ice40 is using SB_IO how to do this on ECP5

A: Ice40
A: https://github.com/lawrie/OV7670-Verilog/blob/master/src/camera_configure.v#L55
A: ECP5
A: https://github.com/daveshah1/ulx3s/blob/master/rtl/verilog/orpsoc_top.v#L456

Q: I need same signal on multiple places

A: Make a copy of that signal and pass copy where needed 
A: https://gist.github.com/goran-mahovlic/2a1d163faa6fbee9ab5b62686991fd9e#file-top-v-L63

Q: How to use array of pins gp[X] gp[X] in modules if some are inputs and some are output
INPUT gp[1], //works
OUTPUT gp[2], //fail -- cannot assign gp again

A: