Windows PCI Device Driver Development Guide: Building Your First Device Driver from Scratch

The Windows WDF (Windows Driver Framework) is a driver development architecture introduced by Microsoft, designed to simplify the kernel driver development process and enhance system stability. WDF drivers are divided into KMDF (Kernel-Mode Driver Framework) and UMDF (User-Mode Driver Framework). KMDF provides an object-oriented interface for kernel-mode drivers, such as Device Objects, Queue Objects, Request … Read more

Windows PCI Device Driver Development Guide: Introduction to Driver Template Code

In the previous article, we introduced how to “write” a Windows PCI device driver from scratch. The term “write” is in quotes because we didn’t actually write any code; the driver code was generated using the KMDF template in Visual Studio. In this article, we will introduce the generated driver code. The first function to … Read more

Detailed Explanation of Labeling Techniques for Unit Length in Assembly Language

1. Basic Concept of Labels In assembly language, a label is a symbolic name used to mark memory addresses. In 8086 assembly, there are two types of labels: Regular Labels: Represents only the address of a memory unit Labels with Unit Length: Represents not only the address but also implicitly includes the length information of … Read more

Detailed Explanation of call and ret Instructions in Assembly Language

ret and retf Instructions <span>call</span> and <span>ret</span> are transfer instructions that control the program flow by modifying the IP (Instruction Pointer) or simultaneously modifying both the CS (Code Segment Register) and IP. These instructions are typically used together to implement the design of subroutines (functions). ret Instruction <span>ret</span> (return) instruction pops data from the stack … Read more

Implementing Hexadecimal Display of Byte Data Using Lookup Tables in Assembly Language

1. Problem Analysis We need to write a subroutine that displays a given byte of data in hexadecimal format at the center of the screen. One byte should be represented by two hexadecimal characters, corresponding to the high 4 bits and low 4 bits of the value. Key Points: Separate the high 4 bits and … Read more

Detailed Explanation of CPU I/O Capabilities and Peripheral Control Techniques in Assembly Language

1. Overview of CPU I/O Capabilities The CPU not only has computational capabilities but also needs to exchange data with external devices, a capability known as I/O (Input/Output) capability. Typical I/O operations in a computer system include: Keyboard input Display output Disk read/write Network communication, etc. 2. Two Core Issues in Peripheral Interaction 1. Peripheral … Read more

Digital Clock Based on Assembly Language

1. Abstract A single-chip microcomputer (Single-Chip Microcomputer) is a microcontroller that integrates CPU, RAM, ROM, timing, counting, and various interfaces into one. It is small in size, low in cost, powerful in function, and widely used in smart products and industrial automation. The 51 microcontroller is one of the most typical and representative microcontrollers. This … Read more

Agreement Signed: Indonesia Purchases 48 KAAN Fifth-Generation Fighters from Turkey, J-10C Out of the Running

The agreement has been signed. On June 11, at the Jakarta International Military Police and Defense Exhibition, Indonesia purchased 48 KAAN “Khan” fifth-generation fighters from Turkey. The contract amounts to a staggering $10 billion, with a project timeline of 10 years for delivery. This marks the first international export order for the KAAN “Khan” and … Read more

C Walker 136 – The Ancient Theater of Aspendos

2017 Turkey—-2017.03.15—-46/16/D5/D266Standing in the ancient theater of Aspendos, which is over 2000 years old, I listened to my companions sing my country. They freely sat in a semicircular arrangement on the theater steps, singing impromptu. Without the aid of sound equipment, the theater’s semi-enclosed echo enhanced the loud singing, making it very pleasant to hear.Tonight, … Read more

Enjoy This Vegetable in Summer: High Vitamin C at Just 2 Yuan per Jin, No Stir-Frying or Pickling Needed, Just Shred and Mix for a Crisp and Refreshing Dish

Introduction: Enjoy this vegetable in summer: high in Vitamin C at just 2 yuan per jin, no stir-frying or pickling needed, just shred and mix for a crisp and refreshing dish. In people’s daily diets, common cooking methods include braising, steaming, quick frying, boiling soup, and making cold dishes. As summer approaches, the weather gradually … Read more