Notes from the fourth RISC-V workshop

The lowRISC project, which is an effort to develop a fully open-source, Linux-powered system-on-chip based on the RISC-V architecture, has published notes from the fourth RISC-V workshop. Notably, the post explains, the members of the RISC-V foundation voted to keep the RISC-V instruction-set architecture (ISA) and related standards open and license-free to all parties. There are also accounts included of the work on RISC-V interrupts, heterogeneous multicore RISC-V processors, support for non-volatile memory, and Debian's RISC-V port.