247 lines
9.7 KiB
HTML
247 lines
9.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html>
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<head>
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<title>AppleWin Debugger Tutorial</title>
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<meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252">
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</head>
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<body style="DIRECTION: ltr" lang="en-US">
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<h1>Flags</h1>
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<p>Each flag can individually be set or cleared in the Processor Status Register ('<b>P</b>').
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Cleared flags will show up with a normal background. Set flags will show
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with an inverse background.
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</p>
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<br>
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<p><font size="4"><b>Notes</b>:</font></p>
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<ul>
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<li> Shift+Left mouse button can be used to toggle the state of individual flags.</li>
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<li>
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<p style="MARGIN-BOTTOM: 0in"><i>The legacy commands <b>R</b>? and <b>S</b>?, where? is
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a flag name (C,Z,I,D,B,R,V,N) has been left in.</i></p>
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</li>
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</ul>
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<p><br>
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<br>
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</p>
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<p><font size="4">Commands to set a flag:</font></p>
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<table bgcolor="#cccccc" border="0" cellpadding="2" cellspacing="0" width="75%">
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<tbody>
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<tr bgcolor="#000000">
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<td width="25%">
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<p><font color="#ffffff"><b>Command</b></font></p>
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</td>
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<td>
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<p style="FONT-STYLE: normal"><font color="#ffffff"><b>Description</b></font></p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Carry </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Zero </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Interrupts Disabled </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Decimal (BCD) mode </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Break </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Reserved (not used on 6502)</span></i></p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Overflow </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Set
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Negative </span></i>
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</p>
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</td>
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</tr>
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</tbody>
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</table>
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<p><br>
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<br>
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</p>
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<p><font size="4">Commands to clear a flag:</font></p>
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<table bgcolor="#000000" border="0" cellpadding="2" cellspacing="0" width="75%">
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<tbody>
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<tr bgcolor="#000000">
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<td width="25%">
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<p><font color="#ffffff"><b>Command</b></font></p>
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</td>
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<td>
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<p style="FONT-STYLE: normal"><font color="#ffffff"><b>Description</b></font></p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Carry </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Zero </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Interrupts Disabled </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Decimal (BCD) mode </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Break </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Reserved (not used on 6502)</span></i></p>
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</td>
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</tr>
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<tr bgcolor="#cccccc">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Overflow </span></i>
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</p>
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</td>
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</tr>
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<tr bgcolor="#999999">
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<td>
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<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
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</span></b></font></font>
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</p>
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</td>
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<td>
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<p><i><span style="BACKGROUND: 0% 50%; moz-background-clip: initial; moz-background-origin: initial; moz-background-inline-policy: initial">Clear
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Negative </span></i>
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</p>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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</body>
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</html>
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