> In contrast, RISC-V is much simpler, cleaner, and much more thoroughly standardized, thus the vendor can simply point to the relevant RISC-V specs. I doubt i

> In contrast, RISC-V is much simpler, cleaner, and much more thoroughly standardized, thus the vendor can simply point to the relevant RISC-V specs. I doubt it. Even simple questions like "How many clock cycles to access SPI register X?" wind up surprisingly complicated. And the manufacturer needs to document all of it because there just aren't enough users to figure it all out by experiment. Even if your CPU is 100% bog standard (and these are not), documenting the peripherals takes a ton of work. Datasheets, in general, tend to be horrible. However, I find that the Chinese datasheets are particularly dreadful whether the chips are simple or complex.