358 lines
11 KiB
HTML
358 lines
11 KiB
HTML
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</head><body>
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<div id="container">
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<div id="sidebar">
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<h3 style="text-align:center"><img src="logo.png" alt="Logo" width="41" height="55" /><br />PokeMini</h3>
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<p><a href="index.html">Overview</a></p>
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<p><a href="http://code.google.com/p/pokemini/">Website</a></p>
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<p><a href="history.html">History</a></p>
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<p><a href="keys_info.html">Keys and Info</a></p>
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<p><a href="commandline.html">Command-Line</a></p>
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<p><a href="about_links.html">About / Links</a></p>
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<h3 style="text-align:center">Libraries</h3>
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<p><a href="LIB_pm_init.html">pm_init</a></p>
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<p><a href="LIB_pm_music.html">pm_music</a></p>
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<h3 style="text-align:center">Tools</h3>
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<p><a href="TOOLS_colormapper.html">Color Mapper</a></p>
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<p><a href="TOOLS_ImgConv.html">Image Converter</a></p>
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<p><a href="TOOLS_MusicConv.html">Music Converter</a></p>
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<p>Last Updated:<br />
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<strong>Jun. 12, 2014</strong></p>
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<br /><br />
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<h3 style="text-align:center"><img src="cpudie.gif" alt="CPU Die" width="73" height="55" /><br />
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Hardware</h3>
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<p><a href="Minx_Cpu.html">Minx CPU</a></p>
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<p><img src="ico_minus.gif" alt="-" name="InstructionSet_Ico" width="11" height="11" id="InstructionSet_Ico" onclick="javascript:InstructionSet_CheckItem()" /> <a href="PM_InstructionList.html">Instruction Set:</a></p>
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<div id="InstructionSet_Div">
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<ul>
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<li><a href="PM_Opc_NOP.html">NOP</a></li>
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<li><a href="PM_Opc_MOV8.html">MOV (8-Bits)</a></li>
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<li><a href="PM_Opc_MOV16.html">MOV (16-Bits)</a></li>
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<li><a href="PM_Opc_ADD8.html">ADD (8-Bits)</a></li>
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<li><a href="PM_Opc_ADD16.html">ADD (16-Bits)</a></li>
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<li><a href="PM_Opc_SUB8.html">SUB (8-Bits)</a></li>
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<li><a href="PM_Opc_SUB16.html">SUB (16-Bits)</a></li>
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<li><a href="PM_Opc_ADC8.html">ADC (8-Bits)</a></li>
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<li><a href="PM_Opc_ADC16.html">ADC (16-Bits)</a></li>
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<li><a href="PM_Opc_SBC8.html">SBC (8-Bits)</a></li>
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<li><a href="PM_Opc_SBC16.html">SBC (16-Bits)</a></li>
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<li><a href="PM_Opc_CMP8.html">CMP (8-Bits)</a></li>
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<li><a href="PM_Opc_CMP16.html">CMP (16-Bits)</a></li>
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<li><a href="PM_Opc_INC.html">INC</a></li>
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<li><a href="PM_Opc_DEC.html">DEC</a></li>
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<li><a href="PM_Opc_NEG.html">NEG</a></li>
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<li><a href="PM_Opc_MUL.html">MUL</a></li>
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<li><a href="PM_Opc_DIV.html">DIV</a></li>
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<li><a href="PM_Opc_TST.html">TST</a></li>
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<li><a href="PM_Opc_AND.html">AND</a></li>
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<li><a href="PM_Opc_OR.html">OR</a></li>
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<li><a href="PM_Opc_XOR.html">XOR</a></li>
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<li><a href="PM_Opc_NOT.html">NOT</a></li>
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<li><a href="PM_Opc_SHL.html">SHL</a></li>
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<li><a href="PM_Opc_SAL.html">SAL</a></li>
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<li><a href="PM_Opc_SHR.html">SHR</a></li>
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<li><a href="PM_Opc_SAR.html">SAR</a></li>
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<li><a href="PM_Opc_ROL.html">ROL</a></li>
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<li><a href="PM_Opc_ROLC.html">ROLC</a></li>
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<li><a href="PM_Opc_ROR.html">ROR</a></li>
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<li><a href="PM_Opc_RORC.html">RORC</a></li>
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<li><a href="PM_Opc_XCHG.html">XCHG</a></li>
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<li><a href="PM_Opc_PACK.html">PACK</a></li>
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<li><a href="PM_Opc_UNPACK.html">UNPACK</a></li>
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<li><a href="PM_Opc_SWAP.html">SWAP</a></li>
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<li><a href="PM_Opc_EX.html">EX</a></li>
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<li><a href="PM_Opc_PUSH.html">PUSH</a></li>
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<li><a href="PM_Opc_POP.html">POP</a></li>
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<li><a href="PM_Opc_CALL.html">CALL</a></li>
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<li><a href="PM_Opc_JMP.html">JMP</a></li>
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<li><a href="PM_Opc_RET.html">RET</a></li>
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<li><a href="PM_Opc_HALT.html">HALT</a></li>
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<li><a href="PM_Opc_STOP.html">STOP</a></li>
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</ul>
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</div>
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<p><a href="PM_Memory.html">Memory Map</a></p>
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<p><a href="PM_Cartridge.html">Cartridge </a></p>
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<p><a href="PM_RAM.html">RAM</a></p>
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<p><a href="PM_IRQBios.html">Interrupt / BIOS</a></p>
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<p><a href="PM_Registers.html">Hardware Registers</a></p>
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<p><a href="PM_Timers.html">Timers</a></p>
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<p><a href="PM_IO_Port.html">Hardware I/O Port</a></p>
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<p><a href="PM_Audio.html">Audio / Sound</a></p>
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<p><a href="PM_PRC.html">PRC (Program Rendering Chip)</a></p>
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<p><a href="LCD_Controller.html">LCD Controller</a></p>
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<p><a href="PM_Pinouts.html">Cartridge Pinsout</a></p>
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<p>Last Updated:<br />
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<strong>Dec. 16, 2011</strong></p>
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</div>
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<div id="mainContent">
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<!-- InstanceBeginEditable name="Content" -->
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<h2><span class="mw-headline" id="CMP_.3D_Compare_.288-Bits.29">CMP = Compare (8-Bits) </span></h2>
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<table id="sortable_table_id_0" style="text-align: left;" class="sortable" border="1">
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<tbody>
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<tr>
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<th>Hex</th>
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<th>Mnemonic</th>
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<th>Cycles</th>
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</tr>
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<tr>
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<td>30 </td>
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<td>CMP A, A </td>
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<td>8 </td>
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</tr>
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<tr>
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<td>31 </td>
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<td>CMP A, B </td>
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<td>8 </td>
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</tr>
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<tr>
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<td>32 nn </td>
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<td>CMP A, #nn </td>
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<td>8 </td>
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</tr>
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<tr>
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<td>33 </td>
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<td>CMP A, [HL] </td>
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<td>8 </td>
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</tr>
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<tr>
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<td>34 nn </td>
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<td>CMP A, [N+#nn] </td>
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<td>12 </td>
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</tr>
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<tr>
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<td>35 nn nn </td>
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<td>CMP A, [#nnnn] </td>
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<td>16 </td>
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</tr>
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<tr>
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<td>36 </td>
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<td>CMP A, [X] </td>
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<td>8 </td>
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</tr>
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<tr>
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<td>37 </td>
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<td>CMP A, [Y] </td>
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<td>8 </td>
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</tr>
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<tr>
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<td>DB nn nn </td>
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<td>CMP [N+#nn], #nn </td>
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<td>16 </td>
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</tr>
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<tr>
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<td>CE 30 ss </td>
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<td>CMP A, [X+#ss] </td>
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<td>16 </td>
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</tr>
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<tr>
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<td>CE 31 ss </td>
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<td>CMP A, [Y+#ss] </td>
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<td>16 </td>
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</tr>
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<tr>
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<td>CE 32 </td>
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<td>CMP A, [X+L] </td>
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<td>16 </td>
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</tr>
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<tr>
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<td>CE 33 </td>
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<td>CMP A, [Y+L] </td>
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<td>16 </td>
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</tr>
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<tr>
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<td>CE 34 </td>
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<td>CMP [HL], A </td>
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<td>16 </td>
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</tr>
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<tr>
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<td>CE 35 nn </td>
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<td>CMP [HL], #nn </td>
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<td>20 </td>
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</tr>
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<tr>
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<td>CE 36 </td>
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<td>CMP [HL], [X] </td>
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<td>20 </td>
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</tr>
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<tr>
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<td>CE 37 </td>
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<td>CMP [HL], [Y] </td>
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<td>20 </td>
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</tr>
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<tr>
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<td>CE BC nn </td>
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<td>CMP B, #nn </td>
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<td>12 </td>
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</tr>
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<tr>
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<td>CE BD nn </td>
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<td>CMP L, #nn </td>
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<td>12 </td>
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</tr>
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<tr>
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<td>CE BE nn </td>
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<td>CMP H, #nn </td>
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<td>12 </td>
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</tr>
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<tr>
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<td>CE BF nn </td>
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<td>CMP N, #nn </td>
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<td>12 </td>
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</tr>
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</tbody>
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</table>
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<h3><span class="mw-headline" id="Execute">Execute </span></h3>
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<pre>#nn = Immediate unsigned 8-Bits
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#ss = Immediate signed 8-Bits
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A = Register A
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B = Register B
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N = Register N
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[N+#nn] = Memory: (I shl 16) or (N shl 8) or #nn
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[HL] = Memory: (I shl 16) or HL
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[X] = Memory: (XI shl 16) or X
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[Y] = Memory: (YI shl 16) or Y
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[#nnnn] = Memory: (I shl 16) or #nnnn
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[X+#ss] = Memory: (XI shl 16) or (X + #ss)
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[Y+#ss] = Memory: (YI shl 16) or (Y + #ss)
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[X+L] = Memory: (XI shl 16) or (X + signed(L))
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[Y+L] = Memory: (YI shl 16) or (Y + signed(L))
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</pre>
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<pre>; CMP Sc2, Sc
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;
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; Sc2 = Source 2
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; Sc = Source
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(discarded) = Sc2 - Sc
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</pre>
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<h3><span class="mw-headline" id="Description">Description </span></h3>
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<p>"8-Bits Source 2" subtracts with "8-Bits Source", result is discarded. </p>
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<p>This instruction is used to compare values. </p>
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<h3><span class="mw-headline" id="Conditions">Conditions </span></h3>
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<p>Zero: Set when result is 0 </p>
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<p>Carry: Set when result is < 0 </p>
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<p>Overflow: Set when result overflow 8-bits signed range (< -128 OR > 127) </p>
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<p>Sign: Set when bit 7 of the result is 1 </p>
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<h3><span class="mw-headline" id="Examples">Examples </span></h3>
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<pre>; A = 0x55
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<b>CMP A, $80</b>
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; A = 0x55
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; 0xD5 (0x55 - 0x80 = 0x(1)D4)
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; F = (Zero=0):(Carry=0):(Overflow=1):(Sign=1)
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</pre>
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<pre>; B = 0x31
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; A = 0xCF
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<b>CMP A, B</b>
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; B = 0x31
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; A = 0xCF
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; 0x9E (0xCF - 0x31 = 0x(0)9E)
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; F = (Zero=0):(Carry=0):(Overflow=0):(Sign=0)
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</pre>
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<p><a href="PM_InstructionList.html" title="PM InstructionList"><b>« Back to Instruction set</b></a> </p>
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<div class="printfooter"> Retrieved from "<a href="http://wiki.sublab.net/index.php/PM_Opc_CMP8">http://wiki.sublab.net/index.php/PM_Opc_CMP8</a>"</div>
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<p class="copyright">© 2011-2015 by JustBurn - Hardware documentation copy from Sublab by Team-Pokémé</p>
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