The sun4, sun4c and sun4m architectures were supported in 4.1.4; sun4d was not supported. Sun continued to ship SunOS 4.1.3 and 4.1.4 until December 27, 1998; they were supported until September 30, 2003. =="SunOS" and "Solaris"== In 1987, AT&T Corporation and Sun announced that they were collaborating on a project to merge the most popular Unix flavors on the market at that time: BSD (including many of the features then unique to SunOS), System V, and Xenix.
In 1989, Sun released OpenWindows, an OPEN LOOK-compliant X11-based environment which also supported SunView and NeWS applications.
This would become System V Release 4 (SVR4). On September 4, 1991, Sun announced that its next major OS release would switch from its BSD-derived source base to one based on SVR4.
Although SunOS 4 was intended to be the first release to fully support Sun's new SPARC processor, there was also a SunOS 3.2 release with preliminary support for Sun-4 systems. SunOS 4.1.2 introduced support for Sun's first sun4m-architecture multiprocessor machines (the SPARCserver 600MP series); since it had only a single lock for the kernel, only one CPU at a time could execute in the kernel. The last release of SunOS 4 was 4.1.4 (Solaris 1.1.2) in 1994.
SunOS 4.1.x micro versions continued to be released through 1994, and each of these was also given a Solaris 1.x equivalent name.
The sun4, sun4c and sun4m architectures were supported in 4.1.4; sun4d was not supported. Sun continued to ship SunOS 4.1.3 and 4.1.4 until December 27, 1998; they were supported until September 30, 2003. =="SunOS" and "Solaris"== In 1987, AT&T Corporation and Sun announced that they were collaborating on a project to merge the most popular Unix flavors on the market at that time: BSD (including many of the features then unique to SunOS), System V, and Xenix.
This became the default SunOS GUI in SunOS 4.1.1. ==See also== Comparison of BSD operating systems Comparison of operating systems Illumos OpenSolaris OpenIndiana Solaris (operating system) Unix wars ==References== ==External links== The Sun Hardware Reference (Overview) An Introduction to Solaris – a sample chapter from Solaris Internals: Core Kernel Architecture by Jim Mauro & Richard McDougall, Prentice-Hall, 2000.
(PDF) Info on SunOS from OSdata (last updated February 17, 2002) Initial Solaris announcement Berkeley Software Distribution Discontinued operating systems Sun Microsystems software UNIX System V
The sun4, sun4c and sun4m architectures were supported in 4.1.4; sun4d was not supported. Sun continued to ship SunOS 4.1.3 and 4.1.4 until December 27, 1998; they were supported until September 30, 2003. =="SunOS" and "Solaris"== In 1987, AT&T Corporation and Sun announced that they were collaborating on a project to merge the most popular Unix flavors on the market at that time: BSD (including many of the features then unique to SunOS), System V, and Xenix.
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