Zany80 is a fantasy console designed around the Z80 processor.
It's possible other CPUs such as the 6809 or AVR chips will be supported at some point as well.
Zany80 has been open-source under the Apache 2.0 license since September 19th, 2017. The source is publicly accessible here. Forks, pull requests, and bug reports are all welcome, and any and all assistance is hugely appreciated.
Zany80 was originally called Zenith80, but the name was charged after the discovery that a company called Zenith Data Systems existed that worked with the Z80 processor so as to avoid confusion (and, admittedly, while Zenith is a fun word, Zany80 just has a better ring to it).