Where is protected mode

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Too technical. Not enough information. Not enough pictures. Any additional feedback? Skip to main content Skip to table of contents. This service is more advanced with JavaScript available. Encyclopedia of Cryptography and Security Edition. Editors: Henk C. Multitasking: This is the ability of the OS to run multiple tasks concurrently.

It can only be implemented if each task is scheduled for execution on different processors. While switching between tasks, processors save the current context information in a task state segment.

When the original task has to be rescheduled for execution, the saved information is used by the processors to set their internal registers for resuming execution. Protection: Protection mode guards against software bugs and helps the OS perform reliable multitasking. Checks are made before the memory cycle starts and any offending memory cycle is terminated, generating an exception.

The stability of all software development tools is ensured by blocking illegal memory references. Paging: Pages are sections of memory. The operating system can create a different virtual address for each task, deterring one task from manipulating the memory of another. Pages can also be transferred from primary to secondary storage, permitting more space for storage. Debugging support: As part of protected mode, provides a set of configurable debug registers. You can set a breakpoint by specifying the desired memory address in one of the debug registers and the type of cycle to trigger the breakpoint.

Synonyms protected virtual address mode. Protected Mode isn't compatible with all add-ons, but because it takes precedence over other Internet Explorer features, incompatible add-ons aren't loaded when Protected Mode is enabled.

David Wayne has been writing since , with technology columns appearing in several regional newspapers in Texas. Wayne graduated from the University of Houston in , earning a Bachelor of Arts in communications. What Is Windows Protected Mode?