A microcontroller consists of an arithmetic unit, a controller, memory, and input/output devices, and is also known as a single-chip microcontroller. It is not just a chip that performs a specific logical function, but integrates a complete computer system onto a single chip. It is equivalent to a miniature computer, and compared to a computer, … Read more
Return Value Rules in Windows Calling Conventions In programming on the x86 architecture of the Windows platform, regardless of the calling convention used (<span>__cdecl</span>, <span>__stdcall</span>, <span>__fastcall</span>, etc.), the return value of a function is typically passed through the EAX register. This unified rule simplifies interoperability between different calling conventions. Basic Return Value Mechanism Returning Integers … Read more
FFmpeg/asm-lessonshttps://github.com/FFmpeg/asm-lessons Stars: <span>7.7k</span> License: <span>NOASSERTION</span> asm-lessons is an open-source project focused on teaching assembly language for FFmpeg. Provides a systematic FFmpeg assembly language course to help learners understand low-level computer operations. Suitable for individuals with a background in C programming (especially pointer knowledge) and high school mathematics. Includes theoretical courses and corresponding assignments (some yet … Read more
“Assembly Language” 3rd Edition by Wang Shuang Chapter 16 Direct Addressing Table Checkpoint 16.2 (Page 291) The following program sums the 8 data points at location a in the data segment, storing the result in the word at location b. Complete the program. assume cs:code, es:data data segment a db 1,2,3,4,5,6,7,8 b dw 0 data … Read more
Compilation of Commonly Used Adverbs in Material Writing (with 7 Examples) The frequency of verbs in written materials is the highest; they are the “powerful weapons” that lead sentences and expand discussions.This time, we list10 high-frequency verbs and usage examples (mainly selected from the 20th National Congress report and specific applications in government work reports) … Read more
“Assembly Language” 3rd Edition by Wang Shuang Chapter 7: More Flexible Methods for Addressing Memory Locations Experiment 6 Program from the Practical Course (Page 160) (1) Debug the programs discussed in the course on the machine, using Debug to trace their execution process, and further understand the content discussed during the process. Teacher Wang Shuang … Read more
“Assembly Language”, 3rd Edition by Wang Shuang Chapter 14: Ports Checkpoint 14.1 (Page 267) (1) Program to read the content of cell 2 in CMOS RAM. (2) Program to write 0 to cell 2 in CMOS RAM. ================Reference Answers(1) Reference code is as follows: assume cs:codecode segment start: mov al, 2 ; Address and business … Read more
“Assembly Language”, 3rd Edition by Wang Shuang Chapter 14: Ports Checkpoint 14.2 (Page 269) Programming to calculate (ax) = (ax) * 10 using addition and shift instructions. Hint: (ax) * 10 = (ax) * 2 + (ax) * 8. ===============Reference Answer Although the examples in the book use 8-bit registers, 16-bit registers can also be … Read more
Based on the x64 architecture, assembly language and operating system fundamentals are used to implement a simple operating system kernel in assembly language, demonstrating multitasking, multithreading, locks, and thread synchronization in a multiprocessor environment. Is this possible? I believe no one would think this is a simple task. In fact, if you want to make … Read more
In this article, I will explain in detail the implementation of the switch statement in assembly language, along with an analysis of the provided code example. Basic Characteristics of the Switch Statement The switch statement has the following significant differences compared to the if/elseif structure: Only performs equality comparisons (using je/jne instructions) Uses a series … Read more