Tagged articles

real mode

3 articles · Page 1 of 1

Sep 8, 2025 · Fundamentals

Why Simple Memory Design Is Misleading: The Hidden Complexity of Addressing in Real Mode

The article explains that although memory appears as a simple array of bytes, the way programs locate data—through absolute and relative addressing, segment registers, and relocation—introduces significant complexity, especially in early x86 real‑mode environments where there is no memory protection.

memory addressingreal moderelocation

0 likes · 15 min read

Why Simple Memory Design Is Misleading: The Hidden Complexity of Addressing in Real Mode

Liangxu Linux

Dec 27, 2020 · Fundamentals

What Really Happens When You Press the Power Button? A Deep Dive into the BIOS Boot Process

This article demystifies the computer startup sequence by explaining why BIOS controls the first steps, how memory‑mapping works, how the CPU’s PC register is forced to 0xFFFF0, how the boot sector is loaded to 0x7C00, and what the initial assembly code actually does.

AssemblyBIOSBoot Process

0 likes · 18 min read

What Really Happens When You Press the Power Button? A Deep Dive into the BIOS Boot Process

MaGe Linux Operations

Apr 18, 2017 · Fundamentals

Unlocking Linux: A Deep Dive into Kernel Boot and Initialization (2.2.5 i386)

This article explains how to locate the Linux 2.2.5 i386 kernel source, describes the bootloader (bootsect-loader) and its related files, and walks through both real‑mode and protected‑mode initialization steps, including parameter tables and memory layout, to help readers understand the OS startup process.

AssemblyBoot Processkernel

0 likes · 19 min read

Unlocking Linux: A Deep Dive into Kernel Boot and Initialization (2.2.5 i386)