A computer automated design system includes a subject routing module
configured to set a first grid area and a first diagonal grid area and
route a first wire in the first grid area and a first diagonal wire
extending diagonally to a longitudinal direction of the first wire and a
next routing module configured to set a second grid area and a second
diagonal grid area and route a second wire in the second grid area and a
second diagonal wire extending diagonally to a longitudinal direction of
the second wire.