MEM(4)               NetBSD/sun3 Kernel Interfaces Manual               MEM(4)

NAME
     mem, kmem -- main memory

DESCRIPTION
     The file /dev/mem is an interface to the physical memory of the computer.
     Byte offsets in this file are interpreted as physical memory addresses.
     Reading and writing this file is equivalent to reading and writing memory
     itself.  An error will be returned if an attempt is made to reference an
     offset outside of /dev/mem.

     Kernel virtual memory is accessed via the file /dev/kmem in the same man-
     ner as /dev/mem.  Only kernel virtual addresses that are currently mapped
     to memory are allowed.

     On the Sun3, kernel virtual memory begins at 0x0E000000.

FILES
     /dev/mem
     /dev/kmem

HISTORY
     The files mem and kmem appeared in Version 6 AT&T UNIX.

NetBSD 5.0_STABLE                June 5, 1993                NetBSD 5.0_STABLE
