The 80286

80186 ◄ 80286 ► 80386


Intel 80286 © Intel
Intel 80286 © Intel

The Intel 80286, introduced on 1 February 1982, is a 16-bit x86 microprocessor with 134,000 transistors. Like its contemporary simpler cousin, the 80186, it can correctly execute most software written for the earlier Intel 8086 and 8088. It was employed for the IBM PC/AT, introduced in 1984, and then widely used in most PC/AT compatible computers until the early 1990s. The 80286 was the first x86 microprocessor with memory management and wide protection abilities.

 

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The 80286 Family

AMD

AMD started in the x86 business being a second-source manufacturer for Intel's chip designs. IBM demanded all its suppliers to have a second manufacturing source, and Intel had to license another company to secure the IBM PC contract. The Am286 was one of the results of this contract.

Essentially just an 80286, the Am286 was in reality Intel-designed all the way, pin and instruction compatible, based upon Intel's microcode.

AMD R80286-10/S

R80286-10/S
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AMD R80286-12/S

CPU die

picture:

AMD Am286 12 MHz Die Picture by Pauli Rautakorpi - Published under the Creative Commons Attribution 3.0 Unported license. Slightly edited by HARDWARECOP.

AMD Am286 R80286-12/S Specification Details Show


Intel

Intel A80286-8

CPU die

picture:

Intel 80286 Die Picture by Pauli Rautakorpi - Published under the Creative Commons Attribution 3.0 Unported license. Slightly edited by HARDWARECOP.

A80286-8
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Intel CG80286-10

CG80286-10
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Intel N80286-10

N80286-10
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Intel R80286-6

Kindly donated by Pauli Rautakorpi.

R80286-6
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Intel R80286-8

Kindly donated by Pauli Rautakorpi.

R80286-8
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Intel R80286-10

R80286-10
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SIEMENS SAB

Intel/SIEMENS SAB 80286-1-N

80286-1-N
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Unlisted models:

  • Intel 80286: 4 MHz, 6 MHz, 8 MHz, 10 MHz, 12 MHz, 16 MHz 
  • Am286: 6 MHz, 8 MHz, 16 MHz, 20 MHz
  • Am286ZX/LX: 12,5 MHz, 16 MHz

 

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Comments [ARCHIVED]


orinoko (Tuesday, 26 November 2013 05:28)

This was the first CPU I ever owned in my Wang Labs. PC 260! Awesome little chip :)


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