Z80 instruction set

The Zilog Z80 is an 8-bit microprocessor introduced in 1976. The instruction set was designed to be upward binary compatible with the Intel 8080. Intel 8080 instructions are one to three bytes long whereas the Z80 requires up to four bytes per instruction.

Zilog continued to expand the instruction set of the Z80 with several successors including the Z180, Z280, and Z380. The latest iteration, the eZ80, was introduced in 2001 and was available for purchase as of 2025. The instruction set also appears on non-Zilog CPUs such as the Hitachi HD64180, Mitsui R800, and the Eastern Bloc U880.

This article is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.