Index Index for
Section 7
Index Alphabetical
listing for M
Bottom of page Bottom of
page		 

mem(7)


NAME

  mem - physical memory interface


DESCRIPTION

  The mem character special device file provides access to physical main
  memory.

  Byte addresses in mem are equivalent to physical memory in RAM. References
  to I/O space addresses or to nonexistent RAM will return errors. Write
  accesses to console or PAL memory will also return errors.


RESTRICTIONS

  Because memory is read and written in aligned quadwords (eight contiguous
  bytes), writing fewer than all the bytes in an aligned quadword is a read-
  modify-write operation that is not protected against concurrent writes to
  the same quadword.


FILES

  /dev/mem


SEE ALSO

  kmem(7)

Index Index for
Section 7
Index Alphabetical
listing for M
Top of page Top of
page