c_d.htm

mips架构的bootloader,99左右的版本 但源代码现在没人更新了

<title>The d Command</title>
<h1>d</h1>

<!--INDEX "d command" "display memory" "dump memory" -->

The d command displays memory contents in hex or ASCII format.<p>

</dl><h2>Format</h2><dl><dd>

The format for the d command is:<p>

<pre>
d [-b|h|w|s|S] adr [cnt|-rreg]
</pre>

where:<p>

<table><tr><td>
-b	</td><td>displays the memory contents in groups of bytes.

</td></tr><tr><td>
-h	</td><td>displays the memory contents in halfword groups.

</td></tr><tr><td>
-w	</td><td>displays the memory contents in word groups.

</td></tr><tr><td>
-s	</td><td>displays the memory contents as a null terminated string.

</td></tr><tr><td>
-S	</td><td>cnt is the number of data items to be displayed.

</td></tr><tr><td>
adr	</td><td>specifies the base address from which data is displayed.

</td></tr><tr><td>
cnt	</td><td>specifies the number of lines displayed.

</td></tr><tr><td>
-rreg	</td><td>displays the contents of memory as register reg.
</td></tr></table>

</dl><h2>Functional Description</h2><dl><dd>

The d command displays memory, starting at the specified address, in 
hexadecimal or ASCII format. A -b, -h, -w, or -s option, if specified, sets 
how the data is displayed. See the examples at the end of this section for 
illustration of the possible display formats.<p>

The datasz and moresz Variables<p>

If invoked without a -b, -h, -w, or -s option, the datasz variable sets the 
display format. Setting datasz to -b, -h, -w, or -s has the same effect as 
the command line options of the same names described in this section. The 
datasz variable does not effect any other command displays.<p>

If invoked without cnt, the d command first displays the number of
lines specified in the environment variable moresz. The <a
href="mondef.htm">Monitor</a> then pauses and displays the more
prompt. See the more command for commands available with the more
prompt. Also see the more command for more information on the moresz
variable.<p>

The following example displays memory starting at 0xa0010000.<p>

<pre>
PMON> d a0010000 
a0010000 bf c0 2b 00 bf c0 2b 00 bf c0 2b 00 bf c0 2b 3c ..+...+...+...+<
a0010010 bf c0 2b 3c bf c0 2b 3c bf c0 2b 20 bf c0 2b 20 ..+<..+<..+...+.
a0010020 bf c0 2b 20 bf c0 2b a8 bf c0 2b 78 bf c0 2b 60 ..+...+...+x..+`
a0010030 bf c0 2b 48 bf c0 2b a8 bf c0 2b a8 bf c0 2b a8 ..+H..+...+...+.
a0010040 bf c0 2b 78 bf c0 2b 60 bf c0 2b 48 bf c0 2e 78 ..+x..+`..+H...x
a0010050 bf c0 2f 08 bf c0 2e c4 bf c0 2e 80 bf c0 2f 90 ../.........../.
a0010060 bf c0 2f 90 bf c0 2f 90 bf c0 2e 78 bf c0 2e 78 ../.../....x...x
a0010070 bf c0 2e 78 00 00 00 00 00 00 00 00 00 00 00 00 ...x............
</pre>

</dl><h2>Files</h2><dl><dd>
The d command is located in <a href="../mon/dump.c">mon/dump.c</a>.

</dl><h2>See Also</h2><dl><dd>
<a href="c_l.htm">l command</a>,
<a href="c_search.htm">search command</a>,
<a href="c_m.htm">m command</a>
and <a href="c_dump.htm">dump command</a>.

</dl><p><hr>
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