Real Mode is an operational mode of x86-compatible CPUs that allows direct access to memory and hardware, operating in a simple and unrestricted environment. It is primarily used for bootstrapping the system before switching to more advanced modes, such as Protected Mode, which offer better performance and security features.

Real Mode

operational mode

x86-compatible CPUs

direct access to memory

Direct access to hardware

simple and unrestricted environment

bootstrapping the system

advanced modes

Protected mode is a CPU operational mode in x86-compatible processors that allows the use of advanced features like virtual memory, paging, and safe multi-tasking by providing each process with its own address space and protection against unauthorized access. It enhances system stability and security by preventing applications from directly accessing hardware or memory used by the operating system or other applications.

Protected Mode

performance and security features

Relevant Degrees

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