Editing Intel 80286 (section)

==History and performance==
[[File:KL AMD 80286 CLCC Bottom.jpg|thumb|AMD 80286 (16 MHz version)]]
Intel's first 80286 chips were specified for a maximum clockrate of 5, 6 or 8&nbsp;[[MHz]] and later releases for 12.5&nbsp;MHz. [[AMD]] and [[Harris Corporation|Harris]] later produced 16&nbsp;MHz, 20&nbsp;MHz and 25&nbsp;MHz parts. Intel, [[Intersil]] and [[Fujitsu]] also designed fully static [[CMOS]] versions of Intel's original [[depletion-load NMOS logic|depletion-load nMOS]] implementation, largely aimed at battery-powered devices. Intel's CMOS version of the 80286 was the 80C286.

On average, the 80286 was said to have a speed of about 0.21 [[Instructions per cycle|instructions per clock]] on "typical" programs,<ref>{{cite web |url=http://www.intel80386.com |title=Intel Architecure &#91;sic&#93; Programming and Information |publisher=Intel80386.com |date=January 13, 2004 |access-date=April 28, 2009}}</ref> although it could be significantly faster on optimized code and in tight loops, as many instructions could execute in [[clock cycles per instruction|2 clock cycles]] each. The 6&nbsp;MHz, 10&nbsp;MHz, and 12&nbsp;MHz models were reportedly measured to operate at 0.9&nbsp;MIPS, 1.5&nbsp;MIPS, and 2.66&nbsp;MIPS respectively.<ref>{{cite web |url=http://content.cdlib.org/ark:/13030/kt7h4nc9c2/?layout=metadata&brand=calisphere |title=80286 Microprocessor Package, 1982 |publisher=Content.cdlib.org |access-date=April 28, 2009 |archive-date=March 6, 2019 |archive-url=https://web.archive.org/web/20190306014151/http://content.cdlib.org/ark:/13030/kt7h4nc9c2/?layout=metadata&brand=calisphere |url-status=live }}</ref>

The later E-[[stepping level]] of the 80286 was free of the several significant [[erratum|errata]] that caused problems for programmers and operating-system writers in the earlier B-step and C-step CPUs (common in the AT and AT clones). This E-2 stepping part may have been available in later 1986.<ref name="Infoworld_1985_80286"/>

Intel [[second source]]d this microprocessor to [[Fujitsu|Fujitsu Limited]] in about 1985.<ref>Intel Corporation, "NewsBits: Second Source News", Solutions, January/February 1985, Page 1.</ref>
=== Variants ===

{| class="wikitable"
|-
! Model number !! Frequency !! Technology !! Process !! Package !! Date of release !! Price [[United States dollar|USD]]<ref group=list>In quantities of 100.</ref>
|-
| 80286-10<ref name="auto">Intel Corporation, "New Product Focus Components: 80286 Workhorses: Twice As Fast", Solutions, July/August 1985, Page 17.</ref> || 10 MHz || HMOS-III || [[1.5 μm process|1.5 μm]] || || July/August 1985 || $155
|-
| 80286-12<ref name="auto"/> || 12.5 MHz || HMOS-III || 1.5 μm || || July/August 1985 || $260
|-
| MG80286<ref>Intel Corporation, "New Product Focus Components: Highest Ranking 16-bit Microprocessor Meets Military Objectives", Solutions, September/October 1985, page 13.</ref> || || || || || September/October 1985 || $784
|-
| 80286<ref name="auto1">Ashborn, Jim; "Advanced Packaging: A Little Goes A Long Way", Intel Corporation, Solutions, January/February 1986, Page 2</ref> || || || || 68 Pin PGA<ref group=list>Sampling Q3 1985</ref> || January/February 1986 ||
|-
| 80286<ref name="auto1"/> || || || || 68 Pin PLCC<ref group=list>Sampling Q2 1986</ref> || January/February 1986 ||
|}

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