For a project I would like to have the ability to alter the openrisc project is some way I see in the core files for mor1k and or1200 in the cores directory of the orpsoc-cores repository that they define verilog files such as rtl/verilog/mor1kx_execute_alu.v and rtl/verilog/or1200_alu.v, respective to both socs(I am assuming that the alu equivalent file for mor1k is mor1kx_execute_alu). However I only see these files, depending on which impl i use, generated after I build the directory. As such what is the easiest way of editing the alu for a project. Is their an easier way to simply recompile the parts of the project that I need or is it recommended that I simply open the qpf file in Quartus and edit it from their. I only ask because all of the tutorials I have found seem to sidestep the direct use of quartus other than the terminal commands.