An improved memory segmentation system in a microprocessor, for generating a segment descriptor based on a segment selector, comprises an associative descriptor cache 570 to retain previously fetched, unscrambled, and tested descriptors for subsequent access by the same selectors. If on a memory ...
An application that needs to isolate small chunks of memory must place each chunk in its own page, leading to excessive internal fragmentation. With segmentation, instead of one contiguous virtual address space per process, we can have multiple variable sized virtual spaces, each mapped, managed, ...
In the case of the 8086, segmentation let Intel's designers extend the maximum addressable memory from 64K to one megabyte. Gee, that sounds good. Why is everyone complaining? Well, a little history lesson is in order to understand what went wrong. In 1976, when Intel began designing the ...
China Flash Memory Industry Segmentation Flash memory is a non-volatile electronic computer memory storage medium that can be erased and reprogrammed electrically. Flash memory is widely used in embedded systems to store data and code. Unlike traditional hard drives, flash memory can store data even...
MMU can refuse to translate virtual addresses that are outside the range of memory for the process for example by generating the segmentation faults. This provides the protection for each process. During translation, one can even move parts of the address space of a process between disk and mem...
THE INVENTION RELATES TO A MICROPROCESSOR ARCHITECTURE FOR AN ADDRESS TRANSLATION DEVICE WHICH INVOLVES TWO LEVELS OF AN ANTE-MEMORY22A. SEGMENTATION REGISTERS AND AN ASSOCIATED SEGMENTATION TABLE LOCATED IN THE MEMORY PRINCIPALE13 ESTABLISH A FIRST LEVEL OF MEMORY MANAGEMENT WHICH INVOLVES ATTRIBUTE4 BITS...
Bank switching is a technique used in computer design to increase the amount of usablememorybeyond the amountdirectly addressableby the processor. WikiMatrix The CPU candirectly(and linearly)addressall of the availablememorylocations without having to resort to any sort ofmemorysegmentation or paging ...
Different memory management techniques include paging, segmentation, virtual memory, garbage collection and memory compression. For example, paging divides physical memory into fixed-size units or pages and maps them to logical units, called frames. Paging can improve memory use and protection. It can...
442,484. This patent describes the memory management and protection mechanism embodied in a commercially available microprocessor, the Intel 286. This microprocessor includes segmentation description registers containing segment base addresses, limit information and attributes (e.g., protection bits). The s...
FIG. 14 shows an exemplary implementation of fragment segmentation being used to support logical core and virtual core functionality in accordance with one embodiment of the present invention. FIG. 15 shows a fragment memory of an exemplary four fragment processor implementing a many physicals to many...