real mode

From Power On to System Boot: Exploring the Linux Kernel Boot Process

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When you gently press the power button, eagerly awaiting the Linux system interface to appear, have you ever wondered what journey the underlying hardware undergoes in those few seconds? This is not a simple loading process, but an epic journey from the 16-bit “primitive era” to the 64-bit “modern civilization”. Today, let us become witnesses, … Read more

Technical Explanation of 16-bit and 32-bit Segments in Assembly Language

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Technical Explanation of 16-bit and 32-bit Segments in Assembly Language

1. Core Concepts: 16-bit Segments vs. 32-bit Segments In the x86 architecture, the length and characteristics of a “segment” depend on the operating mode of the processor. 16-bit Segment: Maximum Length:64KB (<span>0FFFFh</span>). Typical Modes:Real Mode and Virtual 8086 Mode. This is the only option for 8086/8088 and is a requirement for 80386+ in real mode. … Read more