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{{Infobox company
| name = Solbourne Computer, Inc.
| logo = Solbourne logo.svg
| type = 
| industry = Computers
| founder = Douglas MacGregor
| founded = {{Start date and age|1986}}
| defunct = {{End date|2008}}
| fate = Merged into [[Deloitte Consulting]]
| hq_location_city = [[Longmont, Colorado]]
| hq_location_country = United States
| num_employees = Over 250
| num_employees_year = 1990<ref name="overview">{{cite web|url=https://archive.org/details/bitsavers_solbourneSporateOverview_2708768/|title=Solbourne Computer Corporate Overview|publisher=Solbourne Computer|via=[[Bitsavers]]|date=1990}}</ref>
| parent = [[Panasonic|Matsushita]] (52%, 1986)
}}
'''Solbourne Computer, Inc.''' was originally a vendor of computer systems based in [[Longmont, Colorado]], United States, at first 52% owned by [[Panasonic|Matsushita]].<ref name="sussex19901030_systems">{{ cite magazine | url=http://www.sussex.ac.uk/fiftyyears/downloads/bulletin/1990-1999/1990/October/19901030.pdf | title=New computing systems for teaching | magazine=University of Sussex bulletin | date=30 October 1990 | access-date=15 July 2024 | pages=4 | archive-url=https://web.archive.org/web/20120928072247/http://www.sussex.ac.uk/fiftyyears/downloads/bulletin/1990-1999/1990/October/19901030.pdf | archive-date=2012-09-28 }}</ref> In the late 1980s and early 1990s, the company produced a range of [[computer workstation]]s and [[server (computing)|servers]] based on the [[SPARC]] [[microprocessor]] architecture, largely compatible with [[Sun Microsystems]]' [[Sun-4]] systems. Some of these are notable for supporting [[symmetric multiprocessing]] some time before Sun themselves produced multiprocessor systems. Even when Sun produced multiprocessor systems, SunOS uses an [[asymmetric multiprocessing]] model rather than OS/MP's symmetric multiprocessing model; Sun would not adopt symmetric multiprocessing until the release of [[Solaris (operating system)|Solaris]] 2.0 in 1992. Due to the cost of engineering and producing new systems to compete with Sun's increasingly competitive hardware offerings and the loss of symmetric multiprocessing as a distinguishing feature, in 1994, Solbourne left the computer hardware business, with [[Grumman]] Systems Support Corporation taking over support for Solbourne customers until 2000.

In 1994, Walt Pounds assumed the role of CEO of Solbourne, and the Solbourne headquarters were moved to Boulder, Colorado. From that point until July 2008, Solbourne focused on providing consulting services and solutions based on [[Oracle Applications]] and associated technologies. Solbourne established a strong reputation in the [[Oracle E-Business Suite]] community, and became a dominant provider of consulting services to state and local Oracle E-Business Suite customers.

On July 11, 2008, Solbourne closed a transaction to sell substantially all of the company assets to [[Deloitte Consulting]]. The Solbourne management team and more than 100 professionals joined Deloitte's Enterprise Applications, Technology Integration and Human Capital service areas.

== Models ==
Solbourne's range comprises the following:
* [[Multiprocessor]] workstations and servers using the [[MBus (SPARC)#KBus|KBus]] [[64-bit]] inter-processor bus:
** '''Series4''': 16.67 MHz [[Fujitsu]] [[MB86900]] processor(s)
** '''Series5''': 33 MHz [[Cypress Semiconductor|Cypress]] CY7C601 processor(s)
** '''Series5e''': 40 MHz Cypress CY7C601 processor(s)
** '''Series6''': 33 MHz [[SuperSPARC]] processor(s)
** '''Series6E''': 50 MHz SuperSPARC processor(s)
* Single-processor IDT (Integrated DeskTop) workstations based on the Panasonic MN10501 KAP SPARC-compatible processor:
** '''S3000''': portable workstation with integrated [[plasma display]]
** '''S4000''': 33 MHz CPU "pizza-box"-style desktop workstation
** '''S4000DX''': 36 MHz S4000 with secondary processor cache

The MN10501 processor had been developed by Solbourne in association with Matsushita, providing a single-chip product featuring an integrated [[floating-point unit|floating-point arithmetic unit]], [[memory management]] hardware, [[branch prediction]] logic, 8 KB of [[cache memory]], a 64-bit [[data bus]], and "mostly 64-bit data paths on chip".<ref name="personalworkstation199006_solbourne">{{ cite magazine | url=https://archive.org/details/sim_personal-workstation_1990-06_2_6/page/50/mode/2up | title=Solbourne Speeds SPARC | magazine=Personal Workstation | last1=Smith | first1=Bud E. | date=June 1990 | access-date=29 January 2023 | pages=50–52 }}</ref>

== Operating systems ==
All Solbourne systems run '''OS/MP''', a modified version of [[SunOS]] 4.1 supporting multiprocessor systems. The final release of OS/MP was 4.1D, corresponding to SunOS 4.1.3.

{{As of|2017}}, some work has been done in [[porting]] [[OpenBSD]] to Solbourne IDT workstations.{{citation needed|date=April 2017}}

==References==
{{Reflist}}

== External links ==
* [http://www.deloitte.com/dtt/article/0,1002,sid%253D26552%2526cid%253D215876,00.html Deloitte Consulting and Solbourne]
* [https://web.archive.org/web/20070224203553/http://www.solbourne.com/ Solbourne corporate website]
* [https://web.archive.org/web/20041012205534/http://www.cs.colorado.edu/~dowdy/Solbourne/ Solbourne Shack Web Page (archive.org copy)]
* [http://www.openbsd.org/solbourne.html OpenBSD/solbourne]
* [http://www.floodgap.com/retrobits/solace/ Floodgap Solbourne Solace] (with another copy of the Solbourne Shack pages)

[[Category:2008 mergers and acquisitions]]
[[Category:American companies established in 1986]]
[[Category:American companies disestablished in 2008]]
[[Category:Computer companies established in 1986]]
[[Category:Computer companies disestablished in 2008]]
[[Category:Defunct computer companies of the United States]]
[[Category:Defunct computer hardware companies]]
[[Category:Defunct computer systems companies]]
[[Category:SPARC microprocessor products]]

{{US-manufacturing-company-stub}}

Solbourne Computer - Revision history

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