An FPGA-based Pentium in a complete desktop system

Shih Lien L. Lu, Peter Yiannacouras, Rolf Kassa, Michael Konow, Taeweon Suh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

26 Citations (Scopus)


Software simulation has been the predominant method for architects to evaluate microprocessor research proposals. There are three tenets in modeling new designs with software models: simulation speed, model accuracy and model completeness. The increasing complexity of the processor and accelerated trend to have multiple processors on a chip are putting burden on simulators to achieve all tenets mentioned, including accurately capturing OS effects. In this work we perform preliminary experimentation/prototyping with an emulation system which overcomes the tension to satisfy all three requirements. The system is an original Socket-7 based desktop processor system with typical hardware peripherals running modern operating systems such as Fedora Core 4 and Windows XP; however we have inserted a Xilinx Virtex-4 in place of the processor that should sit in the motherboard and have used the Virtex-4 to host a complete version of the Pentium microprocessor (which consumes less than half its resources). We can therefore apply architectural changes to the processor and evaluate their effects on the complete desktop system. We use this FPGA-based emulation system to conduct preliminary architectural experiments including growing the branch target buffer and the level 1 caches. In addition, we experimented with interfacing hardware accelerators such as DES and AES engines which resulted in 27x speedups.

Original languageEnglish
Title of host publicationFPGA 2007
Subtitle of host publicationFifteenth ACM/SIGDA International Symposium on Field-Programmable Gate Arrays
Number of pages7
Publication statusPublished - 2007
Externally publishedYes
EventFPGA 2007: Fifteenth ACM/SIGDA International Symposium on Field-Programmable Gate Arrays - Monterey, CA, United States
Duration: 2007 Feb 182007 Feb 20

Publication series

NameACM/SIGDA International Symposium on Field Programmable Gate Arrays - FPGA


ConferenceFPGA 2007: Fifteenth ACM/SIGDA International Symposium on Field-Programmable Gate Arrays
Country/TerritoryUnited States
CityMonterey, CA


  • Accelerator
  • Emulator
  • FPGA
  • Pentium
  • Processor

ASJC Scopus subject areas

  • Computer Science(all)


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