History and Technical Overview of the IRIX Operating System
By
naves
Hot, fresh, and worth queueing round the block for.
Summary
The article provides a comprehensive overview of the IRIX operating system, detailing its history from its origins as 4D1 for SGI's MIPS-based IRIS 4D systems in 1988 through its major versions. It covers IRIX's evolution from UNIX System V Release 3 with 4.3BSD enhancements to later versions, the transition from 4Sight to X Window System, and its features including real-time capabilities, symmetric multiprocessing support, and the XFS filesystem. The content explains IRIX's architecture, development tools, and its role in SGI's high-performance computing and graphics workstations.
Key quotes
· 5 pulledThe first operating system developed for SGI systems ran on the IRIS line of terminals and workstations based on Motorola CPUs.
IRIX 3.x was based on UNIX System V Release 3 with 4.3BSD enhancements, and incorporated the 4Sight windowing system, based on NeWS and IRIS GL.
SGI replaced 4Sight with the X Window System (X11R4), using a modified version of the Motif window manager.
IRIX was a 64-bit operating system from the start, with support for both 32-bit and 64-bit applications.
The XFS filesystem was introduced with IRIX 5.3 and became a standard feature in later versions.
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