[josephg]

Are there any bigger RISC-V boards around yet? I'd love to goof around making a toy RISC-V operating system, but those ESP32C3s look a bit gutless (400kb of RAM? Oof.).

Ideally I'd like something specced closer to a raspberry pi.

[colejohnson66]

The HiFive Unmatched[0] from SiFive is a beast of a dev board, but with a price to match ($665 from Mouser). For a smaller Arduino-style board, the HiFive1 Rev B[1] exists as well, but it's more an MCU than CPU.

[0]: https://www.sifive.com/boards/hifive-unmatched

[1]: https://www.sifive.com/boards/hifive1-rev-b

[elcritch]

What 400kb of RAM on an MCU?! That's a huge amount for an MCU. Arduino's started out with 2kB of SRAM. Linux also requires a MMU to run, which most's MCU's don't have.

[josephg]

Thanks; but I don’t want an MCU. I don’t even know what an MCU is. Arduino style devices aren’t interesting to me.

I want something I can run Linux, like a raspberry pi but RISC-V. I know there were some bigger development boards out there for $600+ a few years back. Is there anything in the pipes which is smaller, for hobbyist messing around?

[goosedragons]

There is at least one now called the Sipeed Nezha, costs about $115 on Aliexpress with 1GB RAM. Seems like it's similar to an older RPi.

[josephg]

Oh thanks for pointing me in the right direction. It looks like they're now shipping $20 development boards with their new chips in the Sipeed LicheeRV. 512MB of ram and linux support:

https://www.aliexpress.com/item/1005003594875290.html