DNIX

DNIX (original spelling: D-Nix) was a Unix-like real-time operating system from the Swedish company Dataindustrier AB (DIAB). A version called ABCenix was also developed for the ABC1600 computer from Luxor. (Daisy Systems also had something called Daisy DNIX on some of their CAD workstations. It was unrelated to DIAB's product.)

History

Inception at DIAB in Sweden

Dataindustrier AB (literal translation: computer industries shareholding company) was started in 1970 by Lars Karlsson as a single-board computer manufacture in Sundsvall, Sweden, producing a Zilog Z80-based computer called Data Board 4680. In 1978 DIAB started to work with the Swedish television company Luxor AB to produce the home and office computer series ABC 80 and ABC 800.

In 1983 DIAB independently developed the first UNIX-compatible machine, DIAB DS90 based on the Motorola 68000 CPU. D-NIX here made its appearance, based on a UNIX System V license from AT&T. DIAB was however an industrial automation company, and needed a real-time operating system, so the company replaced the AT&T-supplied UNIX kernel with their own in-house developed, yet compatible real-time variant. This kernel was originally a Z80 kernel called OS8.