Chapter 1. Introduction 7
The Operating Environment 7
Virtual Machines 7
Virtual Machine Manager 8
Virtual Machine Handle, Control Block, and Client Registers 8
Virtual Devices (introduction) 9
Interrupt and Fault Handling 9
Multitasking 10
Chapter 2. Virtual Devices 11
What Is a Virtual Device? 11
Standard Virtual Devices 11
Creating Virtual Devices 11
What You Need to Get Started 12
Writing a Virtual Device 12
Virtual Device Segments 13
Protected-Mode Instructions 14
Include Files 14
Virtual Device Declaration 14
Virtual Device Identifier 15
Initialization Order 15
Device Control Procedure 15
System Control Messages 15
Virtual Device Initialization 18
Real-Mode Initialization 18
Virtual Device Services 18
Defining Services 19
Declaring Services 19
Importing Services 20
Virtual Device API Procedures 20
Virtual Device Interrupt 2Fh Functions 21
Building a Virtual Device 21
Chapter 3. Windows-Based Device Drivers 23
Creating a Device Driver 23
Guidelines for Designing and Writing a Driver 23
Windows Calling Conventions 24
Chapter 4. Real-Mode Initialization 25
Real-Mode Initialization Procedure 25
Real-Mode Initialization Parameters 25
Return Value, Instanced Data, and Excluded Pages 25
Real-Mode Initialization Example 27
Reference 28
Chapter 5. Windows Interrupt 2Fh Interface 33
Services and Notifications 33
Service Functions 33
Notification Functions 34
Critical Section Handling 34
Releasing the Time Slice 35
Virtual-Display Device Services and Notifications 35
Functions 35
Structures 52
Chapter 6. Message Macros 55
Message Declarations 55
Message Processing 55
Message Table File 55
Using Message Macros 56
Declaring Messages 56
Processing Messages 57
Building the Message Table File 57
Reference 58
Message Declaration Macros 58
Message Usage Macros 61
Chapter 7. Registering Statistics with System Monitor 65
