The CPU board was based on a 10 MHz 68010 processor with a proprietary Sun Memory Management Unit ( MMU ) and could address 8 MB of physical and 16MB of virtual memory.
42.
In general, memory access management is a responsibility of the operating system kernel, in combination with hardware mechanisms that provide supporting functionalities, such as a memory management unit ( MMU ).
43.
The AllCard, an add-on memory management unit for XT-class computers, allowed normal memory to be mapped into the A0000-EFFFF ( patched to handle this memory layout.
44.
Additionally, a memory management unit ( MMU ) is a small device between CPU and RAM recalculating the actual memory address, for example to provide an abstraction of virtual memory or other tasks.
45.
The difficulty in porting to the various 8086 and Z8000-based machines, said Microsoft in its 1983 OEM directory, had been the lack of a standardized memory management unit and protection facilities.
46.
The goal was made possible by the existence of a hardware abstraction layer in the Macintosh Toolbox in the original Macintosh ROM, and a hardware Memory Management Unit ( MMU ) in the Lisa.
47.
A few years later the SH-3 core was added to the SH CPU family; new features included another interrupt concept, a memory management unit ( MMU ) and a modified cache concept.
48.
Work on associated support chips, the memory management unit and floating point unit, were later interrupted by yet another debate on whether or not the design should be 32-or 64-bit.
49.
The X99 chipset supports Virtualization Technology for Directed I / O ( Intel VT-d ), which provides hardware support for virtualization by implementing an input / output memory management unit ( IOMMU ).
50.
Around this time a new generation of central processors ( CPUs ) were coming to market, offering 32-bit address spaces and ( initially optional ) support for a memory management unit ( MMU ).
