NAME

       memtool - display and modify memory

SYNOPSIS

       memtool md [-b|-w|-l|-q] [-x] [-s filename] region
       memtool mw [-b|-w|-l|-q] [-d filename] start data...

DESCRIPTION

       memtool  allows  one  to  read and write regions of files. When applied to /dev/mem (which is the default
       file) the regions represent memory mapped registers.

       There are currently two subcommands: mw to write to memory/a file; and md to read from memory/a file.

       Note that on some machines there are alignment restrictions that forbid for example to read a  word  from
       an  address  that  is  not  word  aligned.  memtool doesn't try to be smart here but simply tries what is
       requested by the caller.  This might result in all kind of errors which are not considered to be a bug of
       the tool, but either the machine or the caller.

OPTIONS

       -b     Use byte wise (8-bit) access

       -w     Use word wise (16-bit) access

       -l     Use long wise (32-bit) access

       -q     Use quad wise (64-bit) access

       -d filename
              Write to filename.

       -s filename
              Read from filename.

       -x     Swap bytes at output

REGIONS

       Memory regions can be specified in two different forms:

       start[+size]

       start-end

       start specifies the byte offset of the  region's  beginning,  i.e.  the  first  included  address.   size
       specifies  the  size of the region in bytes and defaults to 0x100. Alternatively end specifies the offset
       of the last included address.  Offsets can be specified in decimal  or  hexadecimal  with  a  prefix  0x.
       Additionally you can use suffixes G, M, and k, which multiply by 1024^3, 1024^2, and 1024 respectively.

memtool - display and modify memory               December 2015                                       memtool(1)