AppleWin/help/dbg-flags.html
2014-05-23 22:59:02 +01:00

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<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">
<h1>Flags</h1>
<p>Each flag can individually be set or cleared on the Processor Status Register ('<b>P</b>').&nbsp;
Cleared flags will show up with a normal background.&nbsp; Set flags will show
with an inverse background.
</p>
<br>
<p><font size="4"><b>Notes</b>:</font></p>
<ul>
<li>
<p style="MARGIN-BOTTOM: 0in"><i>The legacy commands <b>R</b>? and <b>S</b>?, where? is
a flag name (C,Z,I,D,B,R,V,N) has been left in.</i></p>
</li>
</ul>
<p><br>
<br>
</p>
<p><font size="4">Commands to set a flag:</font></p>
<table bgcolor="#cccccc" border="0" cellpadding="2" cellspacing="0" width="75%">
<tbody>
<tr bgcolor="#000000">
<td width="25%">
<p><font color="#ffffff"><b>Command</b></font></p>
</td>
<td>
<p style="FONT-STYLE: normal"><font color="#ffffff"><b>Description</b></font></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">SEC
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Carry </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">SEZ
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Zero </span></i>
</p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">SEI
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Interrupts Disabled </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">SED
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Decimal (BCD) mode </span></i>
</p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">SEB
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Break </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">SER
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Reserved (not used on 6502)</span></i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">SEV
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Overflow </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">SEN
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
Negative </span></i>
</p>
</td>
</tr>
</tbody>
</table>
<p><br>
<br>
</p>
<p><font size="4">Commands to clear a flag:</font></p>
<table bgcolor="#000000" border="0" cellpadding="2" cellspacing="0" width="75%">
<tbody>
<tr bgcolor="#000000">
<td width="25%">
<p><font color="#ffffff"><b>Command</b></font></p>
</td>
<td>
<p style="FONT-STYLE: normal"><font color="#ffffff"><b>Description</b></font></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">CLC
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Carry </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">CLZ
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Zero </span></i>
</p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">CLI
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Interrupts Disabled </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">CLD
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Decimal (BCD) mode </span></i>
</p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">CLB
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Break </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">CLR
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Reserved (not used on 6502)</span></i></p>
</td>
</tr>
<tr bgcolor="#cccccc">
<td>
<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">CLV
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Overflow </span></i>
</p>
</td>
</tr>
<tr bgcolor="#999999">
<td>
<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">CLN
</span></b></font></font>
</p>
</td>
<td>
<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
Negative </span></i>
</p>
</td>
</tr>
</tbody>
</table>
<br>
</body>
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