MIPS RISC/os
Developer | MIPS Computer Systems, Inc. |
---|---|
OS family | Unix-like |
Platforms | MIPS architecture |
RISC/os was a UNIX operating system distributed by MIPS Computer Systems, Inc. during the 1980s and 1990s for use with their computer workstations and servers, such as the M/120 server or MIPS Magnum workstation. It was also sometimes referred to as UMIPS.
RISC/os was based largely on UNIX System V with additions from 4.3BSD UNIX, ported to the MIPS architecture. The RISC/os user environment could be configured for compatibility with either System V Release 3, 4.3BSD, or (in later versions) System V Release 4.
Because of this early UNIX heritage, RISC/os was limited in comparison to modern UNIX variants — for example, even the last releases of RISC/os did not support shared libraries[citation needed].
After the acquisition of MIPS Computer Systems by Silicon Graphics in 1992, MIPS' own workstation and server product lines were phased out, and with them, RISC/os.