Specifications

Version Release Date Notes
1.01 September
2004
No changes.
1.0 May 2004 Initial release of the Nios II processor architecture.
Core Revisions
Core revisions introduce changes to an existing Nios II core. Core revisions most commonly fix identified
bugs, or add support for an architecture revision. Not every Nios II core is revised with every release of the
Nios II architecture.
Nios II/f Core
Table 6-3: Nios II/f Core Revisions
Version Release Date Notes
13.1 November
2013
• Added ECC support for internal RAM blocks (instruction cache,
MMU TLB, and register file)
• Added support for enhanced floating-point custom instructions
11.0 May 2011 No changes.
10.1 December
2010
No changes.
10.0 July 2010 No changes.
9.1 November
2009
• Added optional external interrupt controller interface.
• Added optional shadow register sets.
9.0 March 2009 No changes.
8.1 November
2008
No changes.
8.0 May 2008
• Implemented the optional MMU.
• Implemented the optional MPU.
• Implemented advanced exception checking.
• Implemented the initda instruction.
7.2 October 2007 Implemented the jmpi instruction.
7.1 May 2007 No changes.
7.0 March 2007 No changes.
6.1 November
2006
No changes.
6.0 May 2006 Cycle count for flushi and initi instructions changes from 1 to 4
cycles.
6-4
Core Revisions
NII51018
2015.04.02
Altera Corporation
Nios II Processor Revision History
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