Specification Links: PLIC https://github.com/riscv/riscv-plic-spec https://github.com/riscv/riscv-plic-spec/blob/master/riscv-plic.adoc CLINT https://github.com/riscv/riscv-aclint/blob/main/riscv-aclint.adoc AIA