Circuit Modeling in DLSim 3

DLSim 3, is a GUI-based digital logic simulation program developed by Richard Salter at Oberlin College, extends the capabilities of such programs through the use of Java plug-ins. DLSim 3 makes it it possible to use the software for digital design at higher levels of abstraction. With DLSim 3, we are able to present the many levels of circuit design in a single environment, from low level combinational and sequential circuits through models of complete CPUs. This paper shows how DLSim 3 has been used in the classroom to model several CPUs well known to educators, and to support creative efforts on the part of students of Computer Organization.