
"The NetBSD Project is pleased to announce that
release 4.0 of the NetBSD operating system is now available. NetBSD is a free, secure, and highly portable Unix-like Open Source operating system available for many platforms, from 64-bit Opteron machines and desktop systems to handheld and embedded devices. Its clean design and advanced features make it excellent in both production and research environments, and it is user-supported with complete source. Many applications are easily available through pkgsrc, the NetBSD Packages Collection."
Member since:
2005-07-06
It's not exactly NetBSD, but there are some *NIX type systems for the Z80, like UZI: http://www.dougbraun.com/uzi.html
You'll need to add a few RAM packs to a ZX81 first though.