The main goal of the project is to keep the S1 Core as simple as possible to encourage developers. The major differences between T1 and S1 include:

• S1 Core only has one 64-bit SPARC Core (supporting 1 to 4 independent threads of execution) instead of 8 cores;
• S1 Core adds a Wishbone bridge, a reset controller and a basic interrupt controller;
• the S1 Core environment can be run using only free tools on a common x86 Linux machine.

See also

• LEON
• OpenRISC

External links

• Simply RISC - S1 Core
• S1 Core page on OpenCores
• S1 Core page on SunSource
• Open Directory: Computers: Hardware: Components: Processors: SPARC: Open Source