ARM have a real habit of churning out ISAs on an as needed basis, such as the Th... | Hacker News

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fidotron on Dec 13, 2014 | parent | context | favorite | on: Berkeley’s RISC-V Wants to Be Free

ARM have a real habit of churning out ISAs on an as needed basis, such as the Thumb stuff.

The uncomfortable reality here though is that this is just another project from the ultimately failed MIPS/SPARC view of the world. ARM has little to zero academic credibility as it is really just a jumped up 6502. This lack of any sort of theoretical purity is really their big strength.

jacquesm on Dec 13, 2014 [–]

> ARM has little to zero academic credibility as it is really just a jumped up 6502.

I think that statement is taking a few more shortcuts than are warranted.

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