NAME

mem, kmem, mbmem, mbio − main memory and I/O space

DESCRIPTION

Mem is a special file that is an image of the main 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. 

Mbmem is a special file that is an image of the Multibus memory of the system.  Multibus memory is in the range from 0 to 1 Megabyte. 

Mbio is a special file that is an image of the Multibus I/O space.  Multibus I/O space extends from 0 to 64K. 

Mem, mbmem, and mbio may be mapped with the mmap(2) system call.

FILES

/dev/mem
/dev/kmem
/dev/mbmem
/dev/mbio

Sun System Release 0.3  —  21 April 1983