klelatti

45 ms·

721.
by klelatti 4y ago
You can copyright code / implementation but you can't copyright the behaviour of an individual instruction! It's very unlikely but there could conceivably be a patent, but it would have long since expired. No case to answer.
722.
by klelatti 4y ago
Fair comment. If these flags are hardly used then I guess it is a bit surprising that this is necessary.
723.
by klelatti 4y ago
Broadly agree but how easy is it for Rosetta to prove to itself that these flags aren't used somewhere in the code path?
724.
by klelatti 4y ago
It's interesting what this tells us about Apple's approach to the Intel to Arm transition. They must have performed deep analysis of the requirements of Rosetta down to the level of individual instruction emulation before they fin
725.
RISC-V: The Last ISA?(thechipletter.substack.com)
56 points by klelatti 4y ago|98 comments
726.
Descend into the sewers with London’s fatberg busters(atlasobscura.com)
1 points by klelatti 4y ago|0 comments
727.
by klelatti 4y ago
S/360 and it’s successors
728.
by klelatti 4y ago
> Both are pragmatic in their own way Which is exactly what my comment was intended to imply. Nothing else.
729.
by klelatti 4y ago
Not 100% sure what you're pushing back against here. It was certainly a pragmatic implementation of RISC when compared to other designs of the era which were much more 'pure.
730.
by klelatti 4y ago
Well ARM was originally Acorn Risc Machines so they had to choose something that started with A!
731.
by klelatti 4y ago
I think this was true of the original ARM architecture too. Interesting talk on the history of the architecture, including 64-bit, from Arm's lead architect [1] [1] https://soundcloud.com/university-of-cambridge/a-
732.
by klelatti 4y ago
I remember seeing the first episode when the series started. I can still remember things that made me laugh - top of the list the hamster called Special Patrol Group - the name for the police’s notorious rapid response group at the time. It
733.
by klelatti 4y ago
I'm interested why you say this. The perception in the UK is absolutely that she was not up the job and was removed for that reason.
734.
by klelatti 4y ago
Two words: Liz Truss
735.
by klelatti 4y ago
> it’s not unreasonable that they will switch in 10 years or so. You’ve not provided any rationale at all for why they should switch their application cores let alone on this specific timetable. Switching is an expensive business and the
736.
by klelatti 4y ago
That’s really interesting. You might enjoy reading about the VM embedded into the Busicom calculator that used the Intel 4004 [1] They squeezed a virtual machine with 88 instructions into less than 1k of memory! [1] https://thech
737.
by klelatti 4y ago
More likely to be useful RISC-V to Arm then Apple can support running virtual machines for another architecture on its machines.
738.
Motorola, Intel, IBM Make a Mainframe in a PC – The PC XT/370(thechipletter.substack.com)
1 points by klelatti 4y ago|0 comments
739.
by klelatti 4y ago
Yeah agreed - I was thinking more about his productivity in producing so much stuff. I'm a bit baffled by why he's quite so successful tbh.
740.
by klelatti 4y ago
I'm more interested in 'Lessons from the career of Cal Newport': it seems that quite a lot of his productivity is likely to come from having chosen a topic and then writing a whole series of books / articles / podca
741.
DHH – Setting the Pace(world.hey.com)
8 points by klelatti 4y ago|1 comments
742.
Substack Chat(on.substack.com)
6 points by klelatti 4y ago|0 comments
743.
by klelatti 4y ago
Read what you said again and particularly 'at all from now on'. And please take note of what I'm saying. You really don't do your cause any favours with this approach.
744.
by klelatti 4y ago
Agreed that Apple is an outlier and others who have tried to add value such as Nvidia, Qualcomm etc have generally failed. I wonder if it's because Apple captures so much margin from the final product which means they can afford to spe
745.
by klelatti 4y ago
> Qualcomm will likely push RISC-V hard, thus not use ARM ISA at all, from now on. You do know that exaggerated statements like this - which is obviously false - actually harm your cause in promoting RISC-V.
746.
by klelatti 4y ago
That’s great - thank you.
747.
by klelatti 4y ago
Precisely. Also I can see the Nuvia license being structured to suit the Nuvia situation - perhaps low upfront fee and higher ongoing fees plus lots of assistance from Arm. Then Qualcomm tries to get out of paying the higher ongoing fees by
748.
by klelatti 4y ago
It's interesting that apparently Qualcomm didn't inform Arm of the Nuvia purchase even though there was a change of control clause in Nuvia's license. Also IIRC they had 30+ comments from other firms endorsing the purchase re
749.
by klelatti 4y ago
Agree with all of this but not sure how it relates to the point I was making.
750.
by klelatti 4y ago
> And as long the emulation speed is indistinguishable from native (Like Rosetta 2), end users won't notice it and won't complain. Apple could do Rosetta 1 and 2 because the emulated CPU was considerably slower the new architec

More ›