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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>AppleWin Debugger Tutorial</title>
<meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252">
</head>
<body style="DIRECTION: ltr" lang="en-US">
<h2><a name="Symbols"></a>Symbols</h2>
<p>AppleWin supports loading of ACME, and Merlin Symbol Tables. The default
filename read into the Main Symbol Table is “APPLE2E.SYM”.</p>
<p>Looking up symbols is now easier.&nbsp; Can't remember an address of a symbol,
or can't remember the symbol for an address?&nbsp; The new symbol commands
makes it easy:</p>
<p><br>
<br>
</p>
<table border="0" cellpadding="2" cellspacing="0" width="80%">
<COLGROUP>
<col width="64">
<col width="192">
<tbody>
<tr bgcolor="#000000">
<td bgcolor="#000000" width="25%">
<p><font color="#ffffff"><b>Command</b></font></p>
</td>
<td bgcolor="#000000" width="75%">
<p style="FONT-STYLE: normal"><font color="#ffffff"><b>Effect</b></font></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYM</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Display
the number of symbols in the Main, User, and Source symbol tables.</span></i></p>
</td>
</tr>
<tr bgcolor="#999999">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYM
####</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Look-up
the Symbol or Address, and display which Symbol Table it is in.</span></i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYMUSER
LOAD</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Loads
the User Symbol Table.</span></i></p>
</td>
</tr>
<tr bgcolor="#999999">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYMUSER
CLEAR</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clears
the User Symbol Table!</span></i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYMMAIN
####</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Look-up
only in the Main symbol table.</span></i></p>
</td>
</tr>
<tr bgcolor="#999999">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYMUSER
####</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Look-up
only in the User symbol table.</span></i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYMSRC
####</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Look-up
only in the Source symbol table.</span></i></p>
</td>
</tr>
<tr bgcolor="#999999">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYM
name = ####</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Add
(or update) a symbol in the User table with the new Address.</span></i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYM
! name</span></b></font></font></p>
</td>
<td width="75%">
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Remove
a symbol from the User table.</span></i></p>
</td>
</tr>
<tr bgcolor="#999999">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">E
symbol ##</span></b></font></font></p>
</td>
<td width="75%">
<p><i>Set memory (at the symbol Address) to the 8-Bit (byte) Value.</i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td width="25%">
<p><font color="#000000" face="Courier"><b>EB symbol ####</b></font></p>
</td>
<td width="75%">
<p><i>Alias for E.</i></p>
</td>
</tr>
<tr bgcolor="#999999">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b>E8 symbol ####</b></font></font></p>
</td>
<td width="75%">
<p><i>Alias for E.</i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b>EW symbol ####</b></font></font></p>
</td>
<td width="75%">
<p><i>Set memory (at the symbol Address) to the 16-Bit (word) Value.</i></p>
</td>
</tr>
<tr bgcolor="#999999">
<td width="25%">
<p><font color="#000000"><font face="Courier"><b>E16 symbol ####</b></font></font></p>
</td>
<td width="75%">
<p><i>Alias for EW.</i></p>
</td>
</tr>
</tbody>
</table>
<p><br>
<br>
</p>
<p><font size="4"><b>Examples</b>:</font></p>
<table bgcolor="#000000" border="0" cellpadding="2" cellspacing="0" width="799">
<COLGROUP>
<col width="276">
<col width="515">
<tbody>
<tr bgcolor="#00b8ff">
<td bgcolor="#30c0ff" width="276">
<p><font color="#000000"><b>Input</b></font></p>
</td>
<td bgcolor="#30c0ff" width="515">
<p><font color="#000000"><b>Effect</b></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td width="276">
<p><font color="#00b8ff"><font face="Courier"><b>SYM</b></font></font></p>
</td>
<td width="515">
<p><font color="#ffffff"><i>Displays number of symbols in the Main, User, and Source
tables.</i></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td width="276">
<p><font color="#00b8ff"><font face="Courier"><b>SYMMAIN CLEAR</b></font></font></p>
</td>
<td width="515">
<p><font color="#ffffff"><i>Clears the main symbol table!!</i></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td width="276">
<p><font color="#00b8ff"><font face="Courier"><b>SYMMAIN LOAD APPLE2E.SYM</b></font></font></p>
</td>
<td width="515">
<p><font color="#ffffff"><i>Reloads the main symbol table.</i></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td bgcolor="#000000" width="276">
<p><font color="#00b8ff"><font face="Courier"><b>SYM FA62</b></font></font></p>
</td>
<td bgcolor="#000000" width="515">
<p><font color="#ffffff"><i>Look up the Address $<b><font color="#ffff00">FA62</font></b> (RESET).</i></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td bgcolor="#000000" width="276">
<p><font color="#00b8ff"><font face="Courier"><b><span style="BACKGROUND: rgb(0,0,0) 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYM
HOME</span></b></font></font></p>
</td>
<td bgcolor="#000000" width="515">
<p><font color="#ffffff"><i>Look up the Address $<b><font color="#ffff00">FC58</font></b> (HOME).</i></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td bgcolor="#000000" width="276">
<p><font color="#00b8ff"><font face="Courier"><b><span style="BACKGROUND: rgb(0,0,0) 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">SYM
LIFE = 300</span></b></font></font></p>
</td>
<td bgcolor="#000000" width="515">
<p><font color="#ffffff"><i>Define a new user symbol, called “Life” at Address $0300.</i></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td bgcolor="#000000" width="276">
<p><font color="#00b8ff"><font face="Courier"><b><span style="BACKGROUND: rgb(0,0,0) 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">E
LIFE 64</span></b></font></font></p>
</td>
<td bgcolor="#000000" width="515">
<p><font color="#ffffff"><i>Set 8-Bit variable (@ $<b><font color="#ffff00">0300</font></b>)“Life”
to 100 (decimal).</i></font></p>
</td>
</tr>
<tr bgcolor="#000000">
<td bgcolor="#000000" width="276">
<p><font color="#00b8ff"><font face="Courier"><b><span style="BACKGROUND: rgb(0,0,0) 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">EW
LIFE 3E8</span></b></font></font></p>
</td>
<td bgcolor="#000000" width="515">
<p><font color="#ffffff"><i>Set 16-Bit variable (@ $<b><font color="#ffff00">0300</font></b>)“Life”
to 1000 (decimal).</i></font></p>
</td>
</tr>
</tbody>
</table>
<p>
<br>
&nbsp;
</p>
</body>
</html>
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