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layout: page
title: Intel 80286 CPU Information
permalink: /pubs/pc/reference/intel/80286/
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Intel 80286 CPU Information
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80286 Errata
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* [Early Errata: A1 and B1 Steppings](early_errata/)
* [ARPL Behavior](arpl/)
* [Coprocessor Operand Beyond Segment Limit](b2_b3_info/#coprocessor-operand-partially-beyond-limit-of-erc-segment)
* [Instructions Longer than 10 Bytes](extra_prefixes/)
* [Loading Null Selector Values Into DS or ES Registers](b2_b3_info/#loading-null-selector-values-into-ds-or-es-registers)
* [Non-Restartable Protection Violations](b2_b3_info/#non-restartable-protection-violations)
* [POPF Behavior](b2_b3_info/#popf-behavior)
* [REP MOVS and REP INS Restartability](rep_restart/)

80286 Undocumented Instructions
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* [LOADALL](loadall/)

80286 Real-Mode Emulation Notes
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* [Executing Real Mode Programs in Protected Mode](real_mode/)
* [Discrepancies from an iAPX 86/88 Using Emulation](real_mode/#discrepancies-from-an-iapx-86-88-using-emulation)
* [Extending the Address Space of Current iAPX 86 Software](real_mode/#extending-the-address-space-of-current-iapx-86-software)
* [Mixing Real Mode and Protected Mode](real_mode/#mixing-real-mode-and-protected-mode)
* [Exceptions from Undefined Opcodes and String Instructions](exceptions/)

Assorted Publications
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[<img src="http://archive.pcjs.org/pubs/pc/reference/intel/iAPX_286_Hardware_Reference--1983/thumbs/iAPX_286_Hardware_Reference--1983.jpg" width="200" height="260" alt="iAPX 286 Hardware Reference (1983)"/>](http://bitsavers.trailing-edge.com/pdf/intel/_dataBooks/1983_iAPX_286_Hardware_Reference.pdf)
[<img src="http://archive.pcjs.org/pubs/pc/reference/intel/iAPX_286_Operating_System_Writers_Guide--1983/thumbs/iAPX_286_Operating_System_Writers_Guide--1983.jpg" width="200" height="260" alt="iAPX 286 OS Writer's Guide (1983)"/>](http://bitsavers.trailing-edge.com/pdf/intel/_dataBooks/1983_iAPX_286_Operating_System_Writers_Guide.pdf)
[<img src="http://archive.pcjs.org/pubs/pc/reference/intel/iAPX_286_Programmers_Reference_Manual--1985/thumbs/iAPX_286_Programmers_Reference_Manual--1985.jpg" width="200" height="260" alt="iAPX 286 Programmer Reference (1985)"/>](http://bitsavers.trailing-edge.com/pdf/intel/_dataBooks/1985_iAPX_286_Programmers_Reference_Manual.pdf)
[<img src="http://archive.pcjs.org/pubs/pc/reference/intel/80286/progref/thumbs/80286_and_80287_Programmers_Reference_Manual_1987 1.jpeg" width="200" height="260" alt="80286/80287 Programmer Reference (1987)"/>](progref/)