Microcomputer-Based Program for Printing Check Plots of Integrated Circuits Specified in Caltech Intermediate Form

摘要

Mcifplot, a microcomputer-based program which prints check plots of integrated circuits on a dot-matrix printer, was designed, implemented, and tested. The SADT Design, Detailed Design, Data Dictionary, algorithms, Structure Charts, and program code are presented. Mcifplot interprets a geometric description file written in Caltech Intermediate Form (CIF) and produces an output file which can be printed using the public domain program PLOT.COM. Mcifplot is written in C for the CPM operating system and closely matches the function of the Unix based VLSI design tool cifplot. Mcifplot interprets all standard CIF 2.0 commands with the exception of Poly Commands, Delete Definition Commands, and commands which define geometric elements in non-Manhattan directions. Program execution is primarily limited by disk access delays and depends greatly on the format and structure of the input CIF file.