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#cpu

16 posts11 participants1 post today

Why do you all craze about Risc-v. There is this amazing architecture that has expired parents since 2017(even the superH trademark is expired)

The only good thing I see from RISC-V is that they split their instructions in features.

SuperH was really well designed architecture with really good instruction set density.

Instruction set density is not a thing tagged on to a spec which many cores don’t implement and if it is implemented you end up having a mess of mixed 32 and 16 bit instructions. SuperH is cleaner in that everything is a 16 bit instruction which helps with making decoder cheaper.

Correction: instructions are 16-bit by default, there are some 32-bit ones as well but they are way fewer and you are gonna use then only is special circumstances

I stumbled upon an interesting blog today while searching for an image of the Silicon Graphics 3D cube logo. Named "Abort Retry Fail" by Bradford Morgan White, the blog's articles document computer history. I eventually wound up reading three of them.

#1 "The Rise and Fall of Silicon Graphics"

abortretry.fail/p/the-rise-and

Abort Retry Fail · The Rise and Fall of Silicon GraphicsBy Bradford Morgan White