[rescue] NeXTSTEP or OPENSTEP?

Liam Proven lproven at gmail.com
Sun Aug 10 09:28:41 CDT 2014

On 10 August 2014 14:34, Sandwich Maker <adh at an.bradford.ma.us> wrote:
> was mips always open?  or did that come about after the collapse of
> mips workstations and their realignment into the embedded market?
> sparc was iirc always open.

AIUI the bulk of the ISA is open, but there are 4 instructions which
SGI/MIPS owns exclusive rights to. So, for example, the Chinese
Loongson CPUs do not include these.

See here for 2 examples:

And another:

However, subsequently, the Chinese Institute of Computer Technology
did actually buy a licence for the ISA, so later chips will include
the entire instruction set.


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