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Q. Introduction to x86 Architecture

  1. Introduction to x86 Architecture  The x86 architecture is a CISC (Complex Instruction Set Computing) architecture developed by Intel.  1.1 Key Features of x86  1. Registers – General-purpose (EAX, EBX, ECX, EDX), Segment, and Control Registers.  2. Instruction Set – Large and complex with multiple addressing modes.  3. Memory Model – Supports segmentation and paging.  4. Operating Modes – Real mode, Protected mode, Virtual 8086 mode, and Long mode (64-bit).  1.2 Example of x86 Assembly Instruction Execution   MOV AX, BX → Transfers data from BX to AX.   ADD AX, 5 → Adds 5 to AX register
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