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Protected Mode Architecture

Protected Mode Architecture. Default Segments. Pentium uses default segments depending on the purpose of the memory reference Instruction fetch CS register (Code Section) Stack operations 16-bit mode: SP (Stack Pointer) 32-bit mode: ESP (Extended Stack Pointer) Accessing data

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Protected Mode Architecture

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  1. Protected Mode Architecture

  2. Default Segments • Pentium uses default segments depending on the purpose of the memory reference • Instruction fetch • CS register (Code Section) • Stack operations • 16-bit mode: SP (Stack Pointer) • 32-bit mode: ESP (Extended Stack Pointer) • Accessing data • DS register (Data Section) • Offset depends on the addressing mode Last slide

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