Editing Zilog Z80000 (section)

{{Short description|32-bit microprocessor}}
{{More citations needed|date=April 2024}}
<!-- Note: The figures in this document come from the preliminary manual referenced below.
     It is possible that the final processor did not have all of these capabilities.
-->The '''Zilog Z80000''' is an unreleased [[32-bit]] [[central processing unit|processor]] designed by [[Zilog]] and completed in 1986. The Z80000 is a 32-bit expansion of the [[16-bit]] [[Zilog Z8000]] with [[multiprocessing]] capability, a six-stage [[instruction pipeline]], and a 256-byte [[CPU cache|cache]]. It can address 4&nbsp;[[gigabyte]]s of [[Random-access memory|RAM]], but cannot execute code written for the Z8000 or [[Zilog Z80|Z80]].

Described at the time as a "[[Mainframe computer|mainframe]] on a chip", the processor is in many ways an equivalent to [[Intel]]'s [[i386|80386]]. Delays in the initial manufacturing pushed back its availability date to after that of the 386, and the Z80000 only made it to a test sampling phase without ever being released commercially.<ref>{{cite web |url=https://www.kranenborg.org/z8000/ |title=The Z8000 / Z80,000 / Z16C00 CPU homepage |accessdate=2024-11-10}}</ref>