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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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>mfill</TITLE
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TITLE="eCos Reference Manual"
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TITLE="Common Commands"
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>eCos Reference Manual</TH
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><H1
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><A
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NAME="MFILL-COMMAND">mfill</H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN3663"
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></A
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><H2
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>Name</H2
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>mfill&nbsp;--&nbsp;Fill RAM with a specified pattern</DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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><A
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NAME="AEN3666"><H2
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>Synopsis</H2
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><P
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><B
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CLASS="COMMAND"
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>mfill</B
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>  {-b <TT
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CLASS="REPLACEABLE"
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><I
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>location</I
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></TT
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>} {-l <TT
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CLASS="REPLACEABLE"
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><I
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>length</I
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></TT
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>} {-p <TT
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CLASS="REPLACEABLE"
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><I
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>value</I
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></TT
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>} [-1 | -2 | -4]</P
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN3679"
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></A
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><H2
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>Arguments</H2
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><DIV
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CLASS="INFORMALTABLE"
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><A
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NAME="AEN3681"><P
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></P
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><TABLE
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BORDER="1"
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><THEAD
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><TH
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WIDTH="25%"
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>Name</TH
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VALIGN="TOP"
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>Type</TH
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><TH
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Description</TH
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><TH
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WIDTH="25%"
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ALIGN="LEFT"
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>Default</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-b <TT
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CLASS="REPLACEABLE"
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><I
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>location</I
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></TT
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></TD
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><TD
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WIDTH="25%"
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VALIGN="TOP"
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>Memory address</TD
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><TD
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>Location in memory for start of data.</TD
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><TD
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WIDTH="25%"
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><SPAN
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><I
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>none</I
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><TR
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><TD
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WIDTH="25%"
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>-l <TT
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CLASS="REPLACEABLE"
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><I
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>length</I
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></TT
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><TD
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WIDTH="25%"
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VALIGN="TOP"
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>Number</TD
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><TD
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WIDTH="25%"
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VALIGN="TOP"
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>Length of data</TD
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><TD
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WIDTH="25%"
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VALIGN="TOP"
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><SPAN
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><I
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>none</I
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></TD
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><TR
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-p <TT
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CLASS="REPLACEABLE"
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><I
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>pattern</I
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></TT
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></TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Number</TD
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><TD
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WIDTH="25%"
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VALIGN="TOP"
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>Data value to fill with</TD
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><TD
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WIDTH="25%"
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>0</TD
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></TR
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><TR
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-1</TD
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><TD
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ALIGN="LEFT"
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>&nbsp;</TD
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><TD
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WIDTH="25%"
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>Access one byte (8 bits) at a time.
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Only the least significant 8 bits of the pattern will be used.</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-4</TD
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></TR
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><TR
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-2</TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>&nbsp;</TD
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><TD
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WIDTH="25%"
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VALIGN="TOP"
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>Access two bytes (16 bits) at a time.
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Only the least significant 16 bits of the pattern will be used.</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-4</TD
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></TR
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><TR
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-4</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>&nbsp;</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Access one word (32 bits) at a time.</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>-4</TD
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></TR
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></TBODY
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></TABLE
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><P
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></P
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></DIV
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN3729"
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></A
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><H2
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>Description</H2
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><P
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>Fills a range of memory with the given pattern.</P
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN3732"
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></A
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><H2
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>Examples</H2
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><P
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>Fill a buffer with zeros.
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<TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>
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RedBoot&#62; <TT
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CLASS="USERINPUT"
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><B
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>x -b 0x100000 -l 0x20</B
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></TT
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>
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00100000: 00 3E 00 06 00 06 00 06  00 00 00 00 00 00 00 00  |.&#62;..............|
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00100010: 00 00 00 78 00 70 00 60  00 60 00 60 00 60 00 60  |...x.p.`.`.`.`.`|
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RedBoot&#62; <TT
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CLASS="USERINPUT"
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><B
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>mfill -b 0x100000 -l 0x20</B
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></TT
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>
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RedBoot&#62; <TT
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CLASS="USERINPUT"
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><B
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>x -b 0x100000 -l 0x20</B
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></TT
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>
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00100000: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
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00100010: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|</PRE
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></TD
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></TR
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></TABLE
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> </P
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><P
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>Fill a buffer with a pattern.
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<TABLE
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><TD
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><PRE
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CLASS="SCREEN"
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>
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RedBoot&#62; <TT
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CLASS="USERINPUT"
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><B
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>mfill -b 0x100000 -l 0x20 -p 0xDEADFACE</B
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></TT
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>
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RedBoot&#62; <TT
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CLASS="USERINPUT"
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><B
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>x -b 0x100000 -l 0x20</B
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></TT
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>
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00100000: CE FA AD DE CE FA AD DE  CE FA AD DE CE FA AD DE  |................|
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00100010: CE FA AD DE CE FA AD DE  CE FA AD DE CE FA AD DE  |................|</PRE
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></TD
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>
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HREF="mcmp-command.html"
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>Prev</A
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>mcmp</TD
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>ping</TD
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