'RISC-V offers simple, modular ISA'

RISC-V is a new general-purpose instruction-set architecture (ISA) that's BSD licensed, extensible, and royalty free. It's clean and modular with a 32-, 64-, or 128-bit integer base and various optional extensions (e.g., floating point). RISC-V is easier to implement than some alternatives - minimal RISC-V cores are roughly half the size of equivalent ARM cores - and the ISA has already gathered some support from the semiconductor industry.