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picoJava

From Wikipedia, the free encyclopedia
Java processor created by Sun Microsystems

picoJava is amicroprocessor specification dedicated tonative execution ofJava bytecode without the need for aninterpreter orjust-in-time compilation. The aim is to speed bytecode execution up by up to 20 times, compared to standard IntelCPU with aJava virtual machine.[1]GNU Compiler Collection added picoJava support in 1999 as machine definition 'pj,'.[2] The open-source version of picoJava has been implemented in anFPGA.[3]

Creation

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Picojava was developed bySun Microsystems, the first version of the specification was created in 1997.[4] This first version was never released as a product by Sun.[4] A redesign of Picojava in 1999 would give birth to Picojava-II, which is freely available and has arich documentation.[5][6]

See also

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Notes

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  1. ^ab"What is picoJava? Webopedia Definition".www.webopedia.com. 10 June 1999. Retrieved2017-06-04.
  2. ^ab"Patch: Support for picoJava".gcc-patches (Mailing list). 22 Oct 1999.
  3. ^abPuffitsch, 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. ^abcSchoeberl, Martin; Puffitsch, Wolfgang."picoJava-II in an FPGA"(PDF).jopdesign.com. Retrieved2 October 2025.
  5. ^abpicoJava-II™ Microarchitecture Guide(PDF). Sun. 1999. Retrieved2 October 2025.
  6. ^abpicoJava-II™ Programmer's Reference Manual(PDF). Sun. 1999.

References

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  • McGhan, Harlan; O’Connor, Mike (October 1998). "PicoJava: A Direct Execution Engine For Java Bytecode".Computer, Volume 31, Issue 10: pp. 22–30.
  • O’Connor, J. Michael;Tremblay, Marc (March/April 1997). "picoJava-I: The Java Virtual Machine in Hardware".IEEE Micro, Volume 17, Issue 2: pp. 45–53.
  • Hangal, Sudheendra; O'Connor, J. Michael (May/June 1999). "Performance analysis and validation of the picoJava processor."IEEE Micro, Volume 19, Issue 3.

External links

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