PSOS (real-time operating system): Difference between revisions

Revision as of 14:32, 27 May 2022

Revision as of 14:52, 27 May 2022

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{{Anchor|SCG|ISI}}

{{Infobox OS

| name = pSOS

| logo =

| screenshot =

| caption =

| developer = Alfred Chao, Software Components Group (SCG)<br/>[[Integrated Systems Inc.]] (ISI)<br/>[[Wind River Systems]]

| source model = [[Closed source]] (original)<br/>[[Open source]] (later variants)

| kernel type = [[Real-time operating system|Real-time]] [[Monolithic kernel|monolithic]]

| supported platforms = [[Motorola 68000 series]]

| ui =

| family =

| released = {{Start date and age|1982}}

| latest release version = Reliant (RoweBots)

| latest release date = {{Start date and age|2007|08}}

| marketing target = [[Embedded system]]s

| programmed in = 68000 [[assembly language]]

| language = English

| update model =

| package manager =

| working state = Discontinued

| license = [[Proprietary software|Proprietary]]

| website =

}}

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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 [[programming language]] [[C (programming language)|C]]. Attention was also paid to supporting successively more [[integrated development environment]]s, culminating in pRISM+.

In July 1994, [[Integrated Systems Inc.]]ISI acquired [[Digital Research]]'s modular real-time multi-tasking operating system [[FlexOS]] from [[Novell]].<ref name="pNDE"/>

In 1995, [[Integrated Systems Inc.]]ISI offered a <code>pSOSystem/NEST</code> package for [[Novell Embedded Systems Technology|Novell's Embedded Systems Technology]] (NEST).<ref name="Novell_1995_NEST"/><ref name="pNDE"/>

In February 2000, [[Integrated Systems Inc.]]ISI was acquired by [[Wind River Systems]], the originators of the rival RTOS [[VxWorks]]. Despite initial reports that pSOS support would continue, development was halted. Wind River announced plans for a 'convergence' version of VxWorks which will support pSOS system calls, and that no further releases of pSOS will occur.

[[NXP Semiconductors]] acquired pSOS for [[TriMedia (mediaprocessor)|TriMedia]] from Wind River and continued to support this OS for the TriMedia [[very long instruction word]] (VLIW) core.<!-- Likely not after 2010, when NXP's TriMedia group was terminated. -->