A/UX's compatibility layer uses some existing Toolbox functions in the computer's ROM, while other function calls are translated into native Unix system calls and it cooperatively multitasks all Macintosh apps in a single address space by using a token-passing system for their access to the Toolbox. For example, it can run a Macintosh application which calls Unix system functions, or a Unix application which calls Macintosh Toolbox functions (such as QuickDraw), or a HyperCard stack graphical frontend for a command-line Unix application. A hybrid application uses functions from both the Macintosh toolbox and the Unix system. Īpple's compatibility layer allows A/UX to run Macintosh System 7.0.1, Unix, and hybrid applications. Alternatively, the user can choose to run a fullscreen X11R4 session without the Finder. An X Window System server application (called MacX) with a terminal program can also be used to interface with the system and run X applications alongside the Finder. A/UX includes the CommandShell terminal program, which offers a command-line interface to the underlying Unix system. The A/UX Finder is a customized version of the System 7 Finder, adapted to run as a Unix process and designed to interact with the underlying Unix file systems. Features Ī/UX provides a graphical user interface including the familiar Finder windows, menus, and controls. Having a Unix-compatible, POSIX-compliant operating system enabled Apple to bid for large contracts to supply computers to U.S. It is POSIX- and System V Interface Definition (SVID)-compliant and includes TCP/IP networking since version 2.
ĭescribed by InfoWorld as "an open systems solution with the Macintosh at its heart", A/UX is based on UNIX System V Release 2.2, with features from System V Releases 3 and 4 and BSD versions 4.2 and 4.3. A/UX requires select 68k-based Macintosh models with an FPU and a paged memory management unit (PMMU), including the Macintosh II, SE/30, Quadra, and Centris series. It is Apple's first official Unix-based operating system, launched in 1988 and discontinued in 1995 with version 3.1.1. February 1988 35 years ago ( 1988-02) Ī/UX is a Unix-based operating system from Apple Computer for Macintosh computers, integrated with System 7's graphical interface and application compatibility.
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