From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Written inAssembly language
OS familyUnix-like
Working stateHistoric
Latest release0.21
PlatformsC64, C128
user interface
LicenseGNU General Public License

LUnix, short for "Little Unix",[1] is a Unix-like multi-tasking operating system designed to run natively on the Commodore 64 and Commodore 128[2] home computer systems. It supports TCP/IP networking (SLIP or PPP using an RS232 interface). Unlike most Unix-like systems, LUnix is written in 6502 assembly language instead of C.

The first version of LUnix was released in 1993; the current version 0.21 dates from 2004. Amongst others, it supports preemptive multitasking, Unix pipes, a variety of protocols like TCP/IP, SLIP, PPP and RS232, dynamic memory management and virtual consoles. It contains a web server and clients for telnet, POP3 and FTP and can act as a terminal or terminal server over RS232.

LUnix was developed by Daniel Dallmann and contributed by Ilker Ficicilar, Stefan Haubenthal, Maciej Witkowiak and Paul Gardner-Stephen in late 1990s. The first generation LUnix had support for faster RS232 via clever software tricks, 80 column VIC and VDC screen support, PS/2 keyboard support, and small set of standard Unix commands. It is possible with this first distribution to attach two keyboards and two monitors and one RS232 terminal to set up a three simultaneous, multitasking sessions on a C128. LUnix also supports 2 MHz mode and boot disk convenience of C128 platform.

LUnix came with an extensive documentation at the time. Well-defined library calls, relocatable code support and decent memory management functions made it possible to develop software for LUnix easily.

See also[edit]

  • OS-9 a multi-tasking operating system implemented in native code for the 6809 microprocessor
  • GeckOS a multi-tasking operating system for the 6502, offering binary compatibility with LUnix when linked to lib6502


  1. ^ "About LUnix" Archived 2010-08-23 at the Wayback Machine, retrieved on 2010-08-27
  2. ^ "LUnix Sourceforge Homepage", Retrieved on 2010-08-28

External links[edit]