This paper describes an efficient algorithm for generating large combinational circuits (ca. 10 5 -10 6 gates). The method has been applied to construct networks for testing the performance of new VLSI chip fabrication processes and as a means of producing testbeds for assessing the average performance of digital simulation systems

Abstract This paper describes a programming environment for Pascal, called NSEDIT, which runs under VAX/VMS VAX/VMS is a trademark of the Digital Equipment Corporation. . NSEDIT is based upon the notion of Nassi‐Shneiderman charts (abbreviated to N‐S charts in this paper) and is designed for ease of use by novice programmers in a teaching situation. A key component of the system is the editor, which enables structural features of Pascal to be manipulated in terms of their N‐S chart box representations. Simultaneous editing of more than one program or module is permitted. Another key feature of the system is a semiautomatic interface to the VAX/VMS Pascal compiler, with subsequent display of execution counts as part of the N‐S charts. In this way users can obtain immediate feedback on the coverage of program elements by test runs, while still inside an editing session.