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Open-source CPU?[edit]

What's an open source CPU?

The VHDL source for the processor is available for free, so if you have an FPGA board you can replicate this processor.
The advantage of this Sparc V8-implementation is that it requires a fairly small number of gates. 14:06, 7 July 2006 (UTC)
So is it directly based on OpenSPARC or SPARC V8? -Mardus (talk) 05:29, 10 November 2011 (UTC)
SPARC V8 is a specification, not a chip design. Crispmuncher (talk) 09:36, 10 November 2011 (UTC).


What does LEON stand for/mean? Robert K S (talk) 17:36, 16 June 2008 (UTC)


What's the LRR cache replacement algorithm? --Abdull (talk) 12:54, 26 June 2008 (UTC) I think somebody meant the LRU (least recently used) algorithm. Philippe (talk) 14:25, 5 February 2010 (UTC)

No, not LRU. LRR means "least recently replaced" (source: LEON2 xst user's manual, version 1.0.30, section 4.1 on page 24) -- (talk) 16:38, 9 December 2010 (UTC)


Serious, this reads exactly the same as the manufacturer's homepage... this article could be made a bit more neutral, couldn't it? (talk) 20:14, 4 August 2008 (UTC)

You won't get much support for your opinion that it is written like an advertisement. They have no money motive since the core is given away for free or almost free. Maybe you misinterpret their pride of creating this CPU as advertising? —Preceding unsigned comment added by (talk) 04:58, 13 January 2009 (UTC)

In fact, I do agree that this article needs improvement. First, the question if someone makes money from LEON is not relevant for Wikipedia quality standards. Second, Airoflex Gaisler does make money from their LEON cores. You can use it for free under the conditions of the GPL, but you can also pay for a commercial license. Also, please sign your name if you have something to add to the discussion. Philippe (talk) 14:31, 5 February 2010 (UTC)