View source for Nukernel

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  |concern = Fails [[WP:GNG]] and also not found any [[WP:RS]]
  |timestamp = 20260108111746
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{{Short description|Microkernel}}
{{More citations needed|date=May 2022}}
{{Infobox OS
| name                   = NuKernel
| logo                   = <!-- Filename only, no wikilink, Image: or File: -->
| logo caption           = 
| logo alt               = 
| screenshot             = <!-- Filename only, no wikilink, Image: or File:) -->
| caption                = 
| screenshot alt         = 
| developer              = [[Jeff Robbin]], Thomas E. Saulpaugh, Bill M. Bruffey, Russell T. Williams
| family                 = <!-- ? -->
| working state          = Discontinued
| source model           = [[Closed-source]]
| released               = {{Start date and age|1994}}
| discontinued           = Yes
| latest release version = Patent filing
| latest release date    = {{end date|1996}}
| marketing target       = [[Personal computer]]s
| programmed in          = 
| language               = English
| update model           = <!-- APT, etc. -->
| package manager        = <!-- dpkg, rpm, etc. -->
| supported platforms    = [[PowerPC]]
| kernel type            = [[Microkernel]]
| userland               = 
| ui                     = [[Graphical user interface|GUI]]
| license                = [[Proprietary software|Proprietary]]
| preceded by            = [[Mach (kernel)|Mach]]
| succeeded by           = [[XNU]]
| website                = <!-- {{URL|www.example.org}} -->
| other articles         = 
}}
'''NuKernel''' is a [[microkernel]] that was developed at [[Apple Inc.|Apple Computer]] during the early 1990s. It was the basis for the [[Copland (operating system)|Copland]] [[operating system]]. It was written from scratch and designed using concepts from the [[Mach (kernel)|Mach]] 3.0 microkernel, with extensive additions for soft [[real-time computing|real-time]] scheduling to improve multimedia performance. Only one NuKernel version was released, with a Copland [[alpha release]]. Development ended in 1996 with the cancellation of Copland.

The External Reference Specification (ERS) for NuKernel is contained in its entirety in its patent.<ref>{{cite patent |country=US |number=5590334 |status=patent |title=Object oriented message passing system and method |pubdate=1996-12-31 |gdate=1996-12-31 |fdate=1996-03-19 |pridate= |invent1=Saulpaugh, Thomas E. |invent2=Bruffey, Bill M. |invent3=Williams, Russell T. |assign1=Apple Computer |class= |url=}}</ref>

The one-time technical lead for NuKernel, [[Jeff Robbin]], was one of the leaders of [[iTunes]] and the [[iPod]].

Apple's NuKernel is not the microkernel in [[BeOS]], nukernel.

==See also==
*[[XNU]], the microkernel in [[Mac OS X]]

==References==
{{Reflist}}

{{Apple operating systems}}
{{Microkernel}}

[[Category:Apple Inc. operating systems]]
[[Category:Microkernels]]

{{Mac-stub}}
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