We have legacy code which uses a batch building process and now need to simulate the Amake register optimization provided in V3 because we migrated to V4. I found the following on this site regarding Amake functionality under V4: "You can either use uVision2 and create a project, or write a batch file to call the tools from a DOS box." Could you provide an example of the commands to place in a batch file which would simulate the register optimization of Amake? Thanks, Barry