Built-in trap & emulation for all privileged instructions – csrr, csrw, ecall, etc. Support for secure user-mode interrupt handlers mapped to zones – up to 32/64 sources Support for CPU deep-sleep suspend mode for low power applications - wfi ...
Also called Intelligent I/O, a new I/O architecture being developed by a consortium of computer companies called the I2O special Interest Group (SIG). I2O is designed to eliminate I/O bottlenecks by utilizing special I/O processors (IOPs) that handle the nitty gritty details of interrupt hand...