RISC-V and Linux on RISC-V

In this episode of the CyberGizmo we explore the open Instruction Set Architecture (ISA) specification called RISC-V and how Linux will support it

To be fair Intel has been adding cores, and their instruction set includes compatibility with their original chips all the way back to the 8008 / 8088 (why, I have no idea) but maybe someone is still running CP/M?, MS/PC-DOS?

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[mitchelvalentino]

Awesome video. I learned some things. Don’t stop with the RISC-V videos. They’re very much appreciated. Cheers!

[Coffee-Sunrise]

Wonderful video! Jam packed with high quality content with an extremely knowledgable speaker

[reiniertl]

The main advantage I see of RISC over CISC is implementation cost. A less complex implementation of a CPU will always cost less and therefore you can put more stuff in the same space, use less power for the same performance etc. So in the end companies can implement the same RISC-V CPU with less transistors in the same area with better yield, combine multiple implementations of the same ISA in the same wafer, etc. The free part is the freedom that comes with RISC-V and the neatness of its design. RISC-V is not the first open ISA standard but it is probably the best thought, and the one supported by ISA researchers. They are pushing this stuff to undergraduates now, and if you teach your students to use a hammer, any problem they face will look like nails.

[peepzorz]

64K(cores) should be enough for anyone.

[michelderosa]

Another very interesting video.


I would however like to point out that the DEC Vax was not a RISC machine, you probably meant the line of systems (DECStations and DECSystems) that where introduced in the late 80s, which where using MIPS (DEC would eventually introduce it's own RISC processor, the Alpha AXP). As for the Vax chipset, it was essentially a 32-bit evolution of DEC's previous PDP11 chipset.

[puretipz]

Found your lbry channel thanks for the videos might bringe watch

[NicolauWerneck]

How's offering good and exclusive features "lock-in"?

[aliuzel]

Hopefully very very different surprizing RISC-V board on the way. I am working hard for it.

[CrustyAbsconder]

I really like your channel and content. Thank you for the video. I certainly can not make videos of this high quality, nor discuss anything relevant. I would suggest though, that as the video progresses, that you fade out the animation. I get motion-sickness watching it. Also, having a white door near the center of the screen throughout the video, is distracting. I would suggest shutting the door, propping up a statue of a robot, or just hanging a poster or tapestry, or shower curtain. Also, all the hand-movements seem unnecessary. Hope that was helpful criticism.

[kortaffel]

What I wonder about is "binary compatibility".
With 32, 64 and 128 bit and that with I, M, F, Q extensions, I'm pretty sure that a program you compile on one core, wont run on another.
Will a 64 bit processor support 32 bit applications and drag all the 32 bit stuff with it, even thou it's not needed like on x86_64?
What about drivers. 32 bit drivers on a 64 bit processor? Will companies throw out several drivers? More Multilib like we have now? I'm frightened
And if then some big corporation like apple comes along and says "we don't support floating point", that F, D or Q module would be pretty dead. Stupid example, but this modularity also introduces uncertainty.

[hansktube]

a riscv instruction like mult or div can take more than one cycle

[mariolis]

The reason smartphones and pcs are as mainstream as they are now is BECAUSE of things like Windows and Android ... if every company had their OS ... well you only need to look at the IoT industry for that....

[AblkmanPanAfricanPatriach]

RUSC-5 is no more than the corporate deep states fake news properganda to spoon feed the general population, keeping the masses hooked up to the matrix. Companies like Huawei and ecconomies like China are currently the only bussiness environments which allow for true open source innovation, unlike Americas corporate controled of innovation (monopoly). No private invention or innovation will ever come to lite without the explicit consent or involvement of Government or major Corporations. My advice to any private individual who has stumbled on to Tesla like innovations while working inside of their garages. Stay off of the grid, under the radar, and only go public after you have ensured your security and safety from Corporate Deep State.

[richmattisson]

Your audio is pretty irritating. Too much noise reduction i think? Seems unnatural