PicoJava

picoJava is a microprocessor specification dedicated to native execution of Java bytecode without the need for an interpreter or just-in-time compilation. The aim is to speed bytecode execution up by up to 20 times, compared to standard Intel CPU with a Java virtual machine. GNU Compiler Collection added picoJava support in 1999 as machine definition 'pj,'. The open-source version of picoJava has been implemented in an FPGA.

Creation

Picojava was developed by Sun Microsystems, the first version of the specification was created in 1997. This first version was never released as a product by Sun. A redesign of Picojava in 1999 would give birth to Picojava-II, which is freely available and has a rich documentation.

See also

Notes

  1. ↑ "What is picoJava? Webopedia Definition". www.webopedia.com. 10 June 1999. Retrieved 2017-06-04.
  2. ↑ "Patch: Support for picoJava". gcc-patches (Mailing list). 22 Oct 1999.
  3. ↑ Puffitsch, W. and Schoeberl, M. 2007. picoJava-II in an FPGA. In Proceedings of the 5th international Workshop on Java Technologies For Real-Time and Embedded Systems (Vienna, Austria, September 26–28, 2007). JTRES '07, vol. 231. ACM, New York, NY, 213-221. http://doi.acm.org/10.1145/1288940.1288972
  4. 1 2 Schoeberl, Martin; Puffitsch, Wolfgang. "picoJava-II in an FPGA" (PDF). jopdesign.com. Retrieved 2 October 2025.
  5. ↑ picoJava-II™ Microarchitecture Guide (PDF). Sun. 1999. Retrieved 2 October 2025.
  6. ↑ picoJava-II™ Programmer's Reference Manual (PDF). Sun. 1999.

References