A V20 CPU, courtesy of Konstantin Lanzet (CC)The NEC V20 was a 16-bit CPU released in 1984. It is pin-compatible with the Intel 8088, and clones the 8088's instruction set. It also includes newer instructions that had been introduced two years prior by the Intel 80186 and 80286, but does not include the latter's protected-mode features.Besides the 186 instruction set, NEC also added new opcodes and instruction prefixes of their own, enabling performance enhancements for software that could detec...