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Jerryobject (talk | contribs) Template:Lowercase update > Template:lowercase title. Template:Infobox OS parameters: updates, conform to master template. WP:LINKs: updates, adds. WP:LEADSENTENCE MOS:BOLDSYNonym clarify. Small WP:EoS WP:TERSE WP:COPYEDITs. |
Jerryobject (talk | contribs) Fix my link error. MOS:FIRSTABBReviations define before WP:ABBRs in parentheses. WP:LINKs add. |
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'''pSOS''' ('''Portable Software On Silicon''') is a [[real-time operating system]] (RTOS), created in about 1982 by Alfred Chao, and developed and marketed for the first part of its life by his company Software Components Group (SCG). In the 1980s, pSOS rapidly became the RTOS of choice for all [[embedded system]]s based on the [[Motorola 68000 series]] family architecture, because it was written in 68000 [[assembly language]] and was highly optimised from the start. It was also modularised, with early support for OS-aware debugging, plug-in [[device driver]]s, [[Internet protocol suite]] (TCP/IP) stacks, language [[Library (computing)|libraries]], and disk subsystems. Later came [[source code]] level debugging, [[multiprocessing]] support, and further [[computer network]]ing extensions.
In about 1991, Software Components Group was acquired by Integrated Systems Inc. (ISI) which further developed pSOS, then renamed as pSOS+, for other microprocessor families, by rewriting most of it in the
In July 1994, Integrated Systems acquired [[Digital Research]]'s modular real-time multi-tasking operating system [[FlexOS]] from [[Novell]].<ref name="pNDE"/>
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In March 2000, rival company [[Express Logic]] released their Evaluation Kit for pSOS+ users, designed to provide a migration path to its [[ThreadX]] RTOS.
During August 2000, MapuSoft Technologies Inc. came up with the pSOS OS Changer porting kit which can smoothly move the software to multiple OS such as [[Linux]], VxWorks, and more. It includes an ''[[integrated development environment]]'' (IDE) and ''application programming interface'' ([[API]]) optimization along with a profiling tool to measure API timing on target boards (www.mapusoft.com).
In August 2007, RoweBots, a former partner of SCG and ISI, open sourced their pSOS+ compatible version called Reliant. It is available to all that wish to upgrade without applications changes.
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