The most significant of these was the Memory Management board which had virtual memory mapping abilities in the Unix-variant but not in the real-time variant.
12.
The current implementation of PaX supplies writable anonymous memory mappings by default; file backed memory mappings are made writable only if the mmap ( ) call specifies the write permission.
13.
The current implementation of PaX supplies writable anonymous memory mappings by default; file backed memory mappings are made writable only if the mmap ( ) call specifies the write permission.
14.
However, the MSD Super Disk drives have difficulty loading most copy-protected software, due to substantial differences in the DOS code, memory mapping and the microcontroller used.
15.
An example of the latter is found in the Commodore 64, which uses a form of memory mapping to cause RAM or I / O hardware to appear in the $ D000-$ DFFF range.
16.
One was that the IPC itself was not the problem : there was some overhead associated with the memory mapping needed to support it, but this added only a small amount of time to making a call.
17.
:: It's not really protected mode per-se, but the presence of hardware memory mapping-indeed one can get get memory violations in kernel mode ( see note at the end ).
18.
It is designed to work with the Microchip MPLAB suite installed, and directly uses MPASM and MPLINK . lkr files for memory mapping initializations; as of V2 it comes with its own database for processor features and standard register definitions.
19.
For smaller messages Spring provided the " vanilla-path ", which directly copied the data from one space to another, something which proved to be faster than memory mapping in the real world for less than 5k of data.
20.
When the Executable Space Protections are enabled, including the mprotect ( ) restrictions, PaX guarantees that no memory mappings will be marked in any way in which they may be executed as program code after it has been possible to alter them from their original state.
