code: def s20_to_gen(self, pugrp, punit, chunk, sectr):
          
          cmd = ["nvm_addr s20_to_gen", self.envs["DEV_PATH"],
                 "%d %d %d %d" % (pugrp, punit, chunk, sectr)]
          status, stdout, _ = cij.ssh.command(cmd, shell=True)
          if status:
              raise RuntimeError("cij.liblight.s20_to_gen: cmd fail")
  
          return int(re.findall(r"val: ([0-9a-fx]+)", stdout)[0], 16)
docs: S20 unit to generic address