Intel 80286 manual Glossary of 80287 and FLOATING-POINT Terminology Index

Models: 80287 80286

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TABLE OF CONTENTS

 

Page

Avoiding Underflow and Overflow

4-16

Final Adjustments

4-17

Output Format

4-17

Trigonometric Calculation Examples

4-17

FPTAN and FPREM

4-17

Cosine Uses Sine Code

4-18

APPENDIX A

MACHINE INSTRUCTION ENCODING AND DECODING

APPENDIX B

COMPATIBILITY BETWEEN THE 80287 NPX AND THE 8087

APPENDIX C

 

 

IMPLEMENTING THE IEEE P754 STANDARD

 

 

Options Implemented in the 80287

C-1

Areas of the Standard Implemented in Software

~

C-1

Additional Software to Meet the Standard

C-2

GLOSSARY OF 80287 AND FLOATING-POINT TERMINOLOGY

INDEX

Figures

Figure

 

Title

 

 

 

 

Page

1-1

Evolution and Performance of Numeric Processors

..............................................

 

1-1

1-2

'80287NPX Block Diagram

 

 

 

1-7

1-3

80287

Register Set

...... ..............

.........................

1-9

1-4

80287

Status Word

...... ...... .........

.................. .......

1-10

1-5

80287

Control Word Format

....... .......................

...............

1-12

1-6

80287 Tag Word Format

 

 

 

1-13

1-7

80287

Instruction and Data Pointer Image in Memory

 

1-13

1-8

80287

Number System

,

1-15

1-9

Data Formats

:

 

1-16

1-10

Projective versus Affine Closure

....... .........

....... ........ .............

1-20

1-11·

Arithmetic Example Using Infinity

 

:....

;

1-37

2-1

FSAVE/FRSTOR Memory Layout

 

 

 

2-18

2-2

FSTENV/FLDENV Memory Layout

;

 

;

2-19

2-3

Sample 80287 Constants

 

 

 

2-41

2-4

Status Word RECORD Definition

 

~

2-42

2-5

Structure Definition

;

2-42

2-6

Sample PL/M-286 Program

 

 

 

2-44

2-7

Sample ASM286 Program

 

 

 

2-46

2-8

Instructions and Register Stack

 

 

 

2-47

2-9

Synchronizing References to Shared Data

..... ..... ............................

2-50

2-10

Documenting Data Synchronization

...... ...... .........

........................

2-51

2-11

Nonconcurrent FIST Instruction Code Macro

 

 

 

2-51

2-12

Error Synchronization Examples

 

 

 

2-52

vii

Page 349
Image 349
Intel 80286 manual Glossary of 80287 and FLOATING-POINT Terminology Index