Abstract

Using a library of available I.C. chips, and a network description of the circuit in terms of these chips, the program CALHYM produces a 100% complete layout of a multilayer hybrid microcircuit in three steps: the partitioning of the logic functions into library chips, the placement of the used chips on the substrate and the routing of the interconnections.CALHYM is written in Fortran IV and runs on a minicomputer with interactive graphic facilities.