School of Engineering Hardware Systems Collective MASC




This website contains a set of open source tools developed and/or partially maintained by the MASC group.

  • liveHD: LiveHD is an infrastructure designed for Live Hardware Development. By live, we mean that small changes in the design should have the synthesis and simulation results in a few seconds. LiveHD is optimized for synthesis and simulation with a goal of supporting many hardware description languages. It is available at livehd.

  • dromajo: dromajo started as a class project for cmpe125 and soon afterwards Esperanto Tech pick it up as a starting point to perform cosimulation for verification. The project was open sourced, and there are several improvements since the release.

  • ESESC: ESESC is a cycle accurate architectural simulator. It models a very wide set of architectures. You can think of ESESC as sesc 2.0 with many enhancements.

  • SESC: SESC is the original unmaintained cycle accurate architectural simulator. It models a very wide set of architectures: single processors, CMPs, PIMs, and thread level speculation. Check the SESC website at

  • udsim: Design complexity simulator. It uses a montecarlo approach modeling people working on a CPU design project to estimate design times. Available at udsim.

  • RUBY-VPI: Ruby-VPI is a platform for unit testing, rapid prototyping, and systems integration of Verilog modules through the Ruby programming language. It has been develop by Suraj Kurapati for his MS thesis. It was built to help the SCOORE verification and to explore ideas on co-simulation.

  • SCOORE: Santa Cruz Out-of-Order Risc Engine. An out-of-order SPARC V8 processor. This processor is synthesizable on FPGAs and ASIC.

  • XCACTI: XCACTI extended CACTI 3.2 cache power model. It uses a latch the sense amplifier, and models different energies for read and writes. The extensions have been used at the University of Illinois, University of Rochester, North Carolina State University, U.C. Davis, U.C. Irvine, U.C. Riverside, and University of Arizona.
    It is available locally (xcacti.tgz), you can use for any paper or work. Let me know if you find any problem or you publish a paper using it.

  • SCVTOOLS: Santa Cruz Verilog Tools. As part of the SCOORE project two Verilog tools have been developed: a coverage and a lint tool.

  • HDLMETRICS: HDL metrics is a GPL tool developed as a collaboration between UC-Santa Cruz and University of Illinois. It reports a set of metrics for VHDL. The source code is available in hdlmetrics.tgz