These devices are special files that map memory and bus I/O space. They may be read, written, seeked, and (except for kmem) memory-mapped. See read.2v write.2v mmap.2 and directory.3v
mem is a special file that is an image of the physical memory of the computer. It may be used, for example, to examine (and even to patch) the system.
kmem is a special file that is an image of the kernel virtual memory of the system.
zero is a special file which is a source of private zero pages.
eeprom is a special file that is an image of the EEPROM or NVRAM.
vme24d16 (also known as vme24) is a special file that is an image of VMEbus 24-bit addresses with 16-bit data. vme24 address space extends from 0 to 16 megabytes. The VME 16-bit address space overlaps the top 64K of the 24-bit address space.
vme32d16 is a special file that is an image of VMEbus 32-bit addresses with 16-bit data.
vme16d32 is a special file that is an image of VMEbus 16-bit addresses with 32-bit data.
vme24d32 is a special file that is an image of VMEbus 24-bit addresses with 32-bit data.
vme32d32 (also known as vme32) is a special file that is an image of VMEbus 32-bit addresses with 32-bit data. vme32 address space extends from 0 to 4 gigabytes. The VME 24-bit address space overlaps the top 16 megabytes of the 32-bit address space.
atbus is a special file that is an image of the AT bus space. It extends from 0 to 16 megabytes.
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