Intel 80286 User Manual

TABLE OF CONTENTS
Page
Rotate Instructions .................................................................................................. 3-13
Type Conversion and No-Operation Instructions ...................................................... 3-16
Test and Compare Instructions ..................................................................................... 3-16
Control Transfer Instructions ......................................................................................... 3-16
Unconditional Transfer Instructions ........................................................................... 3-17
Jump Instruction ..................................................................................................... 3-17
Call Instruction ........................................................................................................ 3-18
Return and Return from Interrupt Instruction ........................................................ 3-19
Conditional Transfer Instructions ............................................................................... 3-19
Conditional Jump Instructions .............................................................................
... 3-20
Loop Instructions .................................................................................................... 3-20
Executing a Loop
or Repeat Zero Times .............................................. ................. 3.-21
Software-Generated Interrupts .................................................................................. 3-21
Software Interrupt Instruction ................................................................................. 3-21
Character Translation and String Instructions .............................................................. 3-22
Translate Instruction ................................................................................................... 3-22
String Manipulation Instructions
and Repeat Prefixes .............................................. 3-22
String Movement Instructions .............................................................................
... 3-23
Other String Operations . ........... .......... ................ ............ ............ ............. .... ....... .... 3-23
Address
Manipulation Instructions ................................................................................ 3-24
Flag Control Instructions ................................................................................................ 3-25
Carry Flag Control Instructions .................................................................................. 3-25
Direction Flag Control Instructions ............................................................................ 3-25
Flag Transfer Instructions .......................................................................................... 3-26
Binary-Coded Decimal Arithmetic Instructions ........................................... .................. 3-27
Packed BCD Adjustment Instructions ........................................................................ 3-27
Unpacked BCD Adjustment Instructions ................................................................... 3-27
Trusted Instructions
... ............ ..... ........ .... ................................... ..... ....... ........................ 3-28
Trusted and Privileged Restrictions on POPF and IRET .......................................... 3-28
Machine State Instructions ......................................................................................... 3-28
Input and Output Instructions .................................................................................... 3-29
Processor Extension Instructions .................................................................................. 3-29
Processor Extension Synchronization Instructions .................................................. 3-30
Numeric Data Processor Instructions ........................................................................ 3-30
Arithmetic Instructions ............................................................................................ 3-30
Comparison Instructions ......................................................................................... 3-30
Transcendental Instructions ................................................................................... 3-30
Data Transfer Instructions ......................................................................................
3-31
Constant Instructions .............................................................................................. 3-31
CHAPTER 4
EXTENDED INSTRUCTION SET
Block I/O Instructions ...................................................................................................... 4-1
High-Level Instructions .................................................................................................... 4-2
CHAPTER 5
REAL ADDRESS MODE
Addressing and Segmentation ....................................................................................... 5-1
Interrupt Handling ........................................................................................................... 5-3
Interrupt Vector Table ................................................................................................. 5-3
Interrupt Priorities ................................................................................................... 5-4
Interrupt Procedures ................................................................................................... 5-5
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Intel 80286 Specifications

General

Processor Type	Microprocessor
Clock Speed	6 MHz to 25 MHz
Transistor Count	134, 000
Addressable Memory	16 MB
Instruction Set	x86
Architecture	x86
Data Bus Width	16-bit
Address Bus Width	24-bit
Operating Modes	Real mode, Protected mode
Process Technology	1.5 µm
Voltage	5V
Introduced	1982
Package	68-pin PGA