UMIPS-BSD, also known as UMIPS/BSD refers to installs of UMIPS that are configured to provide users with a BSD environment. 12 This is similar to Silicon Graphics unofficially referring to its variant of UNIX as "IRIX" beginning with release 4D1-3.1D ( IRIX System V Release 4D1-3.1D) in 1988, but not officially branding it IRIX until release 4D1-4.0 in 1990. By the release of UMIPS 3.10, MIPS began to unofficially refer to UMIPS as RISC/os. The name UMIPS was used by MIPS to refer to releases of their variant of UNIX from version 1.0 to 3.x.
With the introduction of AT&T UNIX System V Release 3 in 1987 10 UMIPS became a dual-universe UNIX with the release of UMIPS 1.1 which supported universes (commands, directory trees, header files, libraries, man pages, etc.) for both BSD and System V. UMIPS was "MIPS Computers' first operating system." UMIPS 1.0, the first release of UMIPS was "a port of Berkeley's BSD4.3 version of UNIX." 7Ĥ.3BSD was released in June of 1986 8 with MIPS receiving the source in July, and shipping the M/500 workstation with UMIPS 1.0 in October of the same year (1986).
Introduced in October 1986, 4 the MIPS M/500 featured MIPS' first RISC CPU the R2000 5Īnd ran a variant of UNIX named UMIPS ( MIPS UNIX). MIPS' first workstation was the MIPS M/500. Stanford in 1984 to found MIPS Computer Systems, Inc. Hennessy of Stanford University began design work on a RISC CPU.
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