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IBM mainframes are large computer systems produced by IBM since 1952. ... Hardware memory protection was provided to protect the operating system from the user ...
Memory protection is a way to control memory access ... It is available on today's System z mainframes and heavily used by System z operating ... IBM System /38 ...
The IBM System/360 (S/360) is a family of mainframe computer systems announced by IBM on April 7, 1964, [1] and delivered between 1965 and 1978. [2] System/360 was the first family of computers designed to cover both commercial and scientific applications and a complete range of applications from small to large.
Traditionally IBM Mainframe memory has been byte-addressable. This kind of memory is termed "Central Storage". IBM Mainframe processors through much of the 1980s and 1990s supported another kind of memory: Expanded Storage. It was first introduced with the IBM 3090 high-end mainframe series in 1985. [28] Expanded Storage is 4KB-page addressable.
The IBM System/360 architecture is the model independent architecture for the entire S/360 line of mainframe computers, including but not limited to the instruction set architecture. The elements of the architecture are documented in the IBM System/360 Principles of Operation [ 1 ] [ 2 ] and the IBM System/360 I/O Interface Channel to Control ...
IBM 3033 and peripherals. The IBM 303X [Note 1] is a discontinued line of mainframe computers, the first model of which, the IBM 3033 Processor, nicknamed "The Big One", was introduced March 25, 1977. [1] Two additional processors, the 3031 and the 3032, were announced on October 6, 1977. [2] [3] All three 303X systems were withdrawn on ...
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