HiFive1: A RISC-V-based, Open-Source, Arduino-Compatible Development Kit
I looked over the Chisel source code and the barebones datasheet [1]. This chip has a couple of unique features:<p>1. It doesn't have any onboard NVRAM (same limitation as the open-v). However, it does have a directly memory mapped quad-SPI peripheral and icache, which is a great alternative and might be better for applications that require a large amount of data. Note that an icache would still be required even if it had onboard NVRAM, because of its speed. You could also make swappable game cartridges, for example.<p>2. It has enough RAM and speed to run Opus.<p>3. The rest of the peripheral set is pretty barebones, no analog like the open-v has. No I2C or I2S without bitbanging, either.<p>4. The boot ROM has peripheral information stored in it. You might be able to have one binary that boots on different types of cores using this.<p>[1] <a href="https://dev.sifive.com/documentation/freedom-e300-platform-brief/" rel="nofollow">https://dev.sifive.com/documentation/freedom-e300-platform-b...</a>