защита памяти
защита памяти аппаратные средства, обеспечивающие защиту адресного пространства одной задачи (процесса) от несанкционированного доступа другой Смотри также: address space, boundary protection Например: "What irritated me about the Sinclair QL was that while the operating system was capable of multitasking, you could still crash at any time because there was no memory protection" (Linus Torvalds) В Sinclair QL меня особенно бесило, что, хотя операционная система поддерживала мультизадачность, всё могло в любой момент рухнуть, потому что не было защиты памяти
A system to prevent one process corrupting the memory (or other resources) of any other, including the operating system. Memory protection usually relies on a combination of hardware (a memory management unit) and software to allocate memory to processes and handle exceptions. The effectiveness of memory protection varies from one operating system to another. In most versions of Unix it is almost impossible to corrupt another process' memory, except in some archaic implementations and Lunix (not Linux!). Under Microsoft Windows any 16 bit application can circumvent the memory protection, often leading to one or more GPFs. Currently (April 1996) neither Microsoft Windows 3.1, Windows 95, nor Mac OS offer memory protection. Windows NT has it, and Mac OS System 8 will offer a form of memory protection.