See also:

• Computers: Hardware: Open Source  (18)
• Computers: Open Source  (695)

LEON-1 VHDL model -  .

- Functional SPARC compatible processor core integer unit. Runs on Altera, Mietec, Temic MG2, Xilinx. Developed for space missions. Implemented as a highly configurable, synthesisable GPL VHDL model.

CMOSexod.com - - For advanced hobbyists: share free microprocessor and DSP IP cores written in Verilog or VHDL.

E-Risc - - Project to design and implement scaleable RISC microprocessor for embedded applications. All architecture and source code to be released under GNU General Public License, or a slightly modified version that includes hardware, not only software.

The Freedom CPU - - Mainly dedicated to purely SIMD superpipelined 64-bit RISC CPU, and the sources distributed under the terms of the GNU licence.

picoJava Core - - A core is the central component of a microprocessor or controller chip. Chips using picoJava core are ideally suited for consumer electronic products running Java applications. By Sun Microsytems, Sun Community Source License.

STM - - 32-bit, 2-way superscalar RISC processor, designed in a HDL. Source downloads. This one is actually working.

TRON VLSI CPU - - 32-bit microprocessor architecture developed to serve as the main hardware building block of the real-time TRON Hypernetwork (Highly Functional Distributed System: HFDS), which is the ultimate goal of the TRON Project.

Google Groups: Free SPARC VHDL model available - - Initial announcement of the GPLed LEON SPARC architecture. (October 7, 1999)

Press: Sun Extends Community Source Licensing to Chip Architectures - - Sun Microsystems announces: for research uses, it extends its new Community Source Licensing model to picoJava and SPARC architectures; the first time a company made major microprocessor intellectual property available via open licensing. (March 2, 1999)