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1994-01-31
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D86 debugger package V3.70 January 31, 1994
The entire package is Copyright 1986--1994 Eric Isaacson.
All rights reserved.
PLEASE read Chapter 1 for legal terms and conditions, how to
register for the package, and an overview of the debugger.
If you bought a D86 disk from a $5-per-disk distribution house
and are taken aback because you now find you must pay me for the
right to use D86, please read the QUESTION and ANSWER from the
A00.DOC file of the A86 package.
The D86 package consists of the three programs D86.COM, A86.COM,
and D86CHECK.COM, a source file HEXOUT.8 used by the
demonstration in Chapter 2, and a sequence of DOC files that,
when printed out in order, make the manual. Each chapter is a
DOC file whose name is D??.DOC, where ?? runs from 00 through
10.
0-2
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION AND LEGAL TERMS
Introduction 1-1
Legal Terms and Conditions 1-1
Registration Benefits 1-3
Overview of D86 1-4
How to Contact Me 1-5
CHAPTER 2 D86 DEMONSTRATION
CHAPTER 3 REQUIREMENTS AND OPERATION
System Requirements for D86 3-1
Invoking D86 3-1
Finding the Program File 3-2
Finding the Symbols File 3-2
BIOS Switching 3-3
The D86 Environment Variable 3-3
Two-Screen Debugging with +V 3-4
The D86 Screen Display 3-4
D86 Commands 3-5
Immediate Assembly-Language Commands 3-5
Entering Instructions Into Memory 3-6
Entering Data into 8086 Memory 3-6
Adding Symbols to a Program 3-7
CHAPTER 4 D86 CONTROL KEYS
Display Control Keys 4-1
Instruction Pointer Positioning Control Keys 4-2
Program Execution Control Keys 4-4
Special Action Control Keys 4-4
CHAPTER 5 COMMAND LANGUAGE
General Operands to Debugger Commands 5-1
Format of Debugger Command Examples 5-1
The Debugger Command Set 5-1
0-3
CHAPTER 6 MEMORY DISPLAY OPTIONS
Memory Display Windows 6-1
Single-Line Memory Windows 6-1
Erasing Memory Display Lines 6-2
Continuation Lines 6-2
Mixed Format Specification 6-3
Numbers in a Format Specification 6-3
Spacing Between Memory-Display Units 6-4
Special-Action Format Specifiers 6-4
The Data Memory Window 6-8
CHAPTER 7 FLOATING POINT DEBUGGING
The Floating-Point Display Window 7-1
Exotic Flavors of Floating-Point Numbers 7-3
CHAPTER 8 COMMONLY ASKED QUESTIONS
Setting Registers 8-1
Modifying Memory 8-1
Screen Problems 8-1
Debugging ROM 8-2
CHAPTER 9 RELEASE HISTORY AND FUTURE PLANS
Release History of D86 9-1
Future Plans 9-2
INDEX