(I am no native speaker...corrections are very welcome!) The operating sustem I use is GENTOO Linux. * I ordered a Longan Nona minimal development board by Sipeed, but I am still awaiting the delivery. At first glance this board is similiar to the "red pill", the STM32F103C8T6. But the heart of the MCU is an OpenHardware RISC-V 32-bit core. More here: https://longan.sipeed.com/en/ You can find datasheets, user manuals etc here: http://dl.sipeed.com/LONGAN/Nano/DOC/ http://dl.sipeed.com/LONGAN/Nano/HDK http://dl.sipeed.com/LONGAN/Nano/SDK and its worth to dig into this in general: http://dl.sipeed.com/LONGAN/Nano/ I recently found this, but didn't have time to evaluate what's there: https://github.com/sipeed/Longan-DOC The board comes in a small acrylic or plastic case with two buttons and a small tft-screen. To flash the board you need modified dfu-tools from here: https://github.com/riscv-mcu/gd32-dfu-utils Here is a FORTH implementation for that board: https://mecrisp-stellaris-folkdoc.sourceforge.io/gd32vf103.html This page is a good introdyction: https://www.susa.net/wordpress/2019/10/longan-nano-gd32vf103/ Due to the corona virus, the board I ordered still has not arrived. As soon as I get my hands on it, I will write more. -- update 2020-03-13 -- Both boards have arrived! Yeah! Since a colleque got "the same boards" but with half the RAM and half the flash I need to figure out of what size the memory is on my boards. The demo video, which is displayed on the tiny TFT display runs fine. Hopefully I will have time this weekend to check the memory sizes. -- update 2020-03-15 To flash the Longan Nano you need a modified version of the dfu-util application from here: https://github.com/riscv-mcu/gd32-dfu-utils I used platformio to build a example program, which already was preinstalled on the Longan Nano to test the flash process. Unfortunately the Longan Nano was no longer functioning after I had flashed it. It still goes into bootloader mode when pressing Boot0->Reset and releasing Reset->Boot0. But beyond that: Nothing. The reason is still unknown. But I could verify the 128 kb of flash memory. Will see, whether I will be able to revive that chip...