https://i-riscv.org/entropy_source/index.html The i-RISCV provides a complete entropy source along with all tools necessary to analyze it to verify the compliance with the stochastic model. Configuration FUSES The RTL implements a FUSE controller which, however is not backed by OTP-FUSES, but with memory that is can be written to by software in RISC-V M privilege mode where the software can set a lock which makes the configuration values read-only until next reset. Hugo en-us