抗辐照处理器

SPARC

SPARC, for Scalable Processor Architecture, is a reduced instruction set computing (RISC) instruction set architecture (ISA) originally developed by Sun Microsystems.

sparc与龙芯的MIPS、英特尔的x86，同属于指令集架构

The first implementation of the original 32-bit architecture (SPARC V7) was used in Sun's Sun-4 workstation and server systems, replacing their earlier Sun-3 systems based on the Motorola 68000 series of processors. SPARC V8 added a number of improvements that were part of the SuperSPARC series of processors released in 1992. 

SPARC V7和SPARC V8是不同的32位版本

LEON

Several fully open source implementations of the SPARC architecture exist:

• LEON, a 32-bit, SPARC Version 8 implementation, designed especially for space use. Source code is written in VHDL, and licensed under the GPL.

LEON is a 32-bit CPU microprocessor core, based on the SPARC-V8 RISC architecture and instruction set. It was originally designed by the European Space Research and Technology Centre (ESTEC), part of the European Space Agency (ESA), and after that by Gaisler Research. It is described in synthesizable VHDL. LEON has a dual license model: An LGPL/GPL FLOSS license that can be used without licensing fee, or a proprietary license that can be purchased for integration in a proprietary product.^[1][2] The core is configurable through VHDL generics, and is used in system-on-a-chip (SOC) designs both in research and commercial settings.^[3]

LEON是ESA ESTEC的一个SPARC V8开源实现，专为空间应用，源码为VHDL。

LEON2、LEON3是LEON的不同版本。

LEON最初由ESA ESTEC开发，后由Gaisler Research维护。

In 2008, Aeroflex acquired Gaisler Research, a designer of rad-hard IP for space applications, including the open source LEON processor.

In May 2014, Aeroflex was acquired by the UK aerospace company Cobham for $1.46 billion.^[14]

 2008年，美国公司Aeroflex收购Gaisler Research，2014年，英国航空航天公司Cobham收购Aeroflex