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> Except most of the RISC-V supporter has been claiming every RISC-V execution are flawless. No-nothings, perhaps. RISC-V cores are being designed by probably
by brucehoult 2y ago
> Except most of the RISC-V supporter has been claiming every RISC-V execution are flawless.
No-nothings, perhaps.
RISC-V cores are being designed by probably a couple of dozen companies, and chips made by many more (SiFive for example has 100+ customers for their cores). All of them have a list of more or less serious errata, just like every Arm and x86 chip.
The strength is in the diversity, in the freedom to experiment and innovate, in the shared software ecosystem, in the security of knowing that if your chip vendor goes out of business for any reason (bankruptcy, change of plans, being acquired...) there will always be another vendor you can turn to.
Unlike the people who were depending on Itanium, DEC Alpha, Motorola 68000, z80 and dozens of others.
- bitwize 2y agoThis. I keep hearing from Amiga people how the Amiga "coulda been a contenda" in this day and age of computing if only Commodore weren't so mismanaged. If only Commodore hadn't bought Amiga Inc. in the first place and the brilliant, revolutionary Jay Miner were allowed to market his designs on his own terms without being beholden to some evil corporate overlord who wanted to squeeze them for profit. If only. If only. But it was clear, from the late 1980s, that the PC was going to win because it was not under the control of a single corporation. Indeed, it was winning despite IBM beginning to fumble the ball. All corporations, in the long run, tend toward mismanagement that can totally sink a platform if it's under their control. It happened to Commodore, Atari, Symbolics, SGI, it almost happened to Apple in the 90s, and it looks like it might happen to Raspberry Pi in the near future. But when there's an open standard on which companies can compete even as they interoperate, the platform thrives, and things unimaginable to its originators can be built upon it. RISC-V brings this quality to the chip architecture and ISA, the same way Linux brought it to operating systems and the combination of x86, ISA/PCI bus, and BIOS/UEFI interface brought it to the general system design. It's not perfect, and no implementation of it is going to be perfect, but RISC-V really is gonna change everything.
- brucehoult 2y agoI regret I have only one upvote to give.
- throw0101c 2y ago> The strength is in the diversity, in the freedom to experiment and innovate, in the shared software ecosystem Does RISC-V have a standardized device discovery mechanism? One critique of ARM (?) I've heard is that for every maker of chips one has to basically re-invent the wheel on bus discover and then on-bus device discovery.
- 15155 2y agoDevice tree seems to be standard fare, just like ARM.