Chloe Stars
315 lines
12 KiB
HTML
315 lines
12 KiB
HTML
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<!-- InstanceBeginEditable name="head" --><!-- InstanceEndEditable -->
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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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<h1>LCD Controller </h1>
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<h2><span class="mw-headline" id="LCD_Controller_Overview">Overview </span></h2>
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<p>The Pokemon Mini LCD is a serial display with it's own on-board
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framebuffer, and display settings. These are all abstracted by the <a href="PM_PRC.html" title="PM PRC">PRC</a>,
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which handles display copies ($1000 ~ $12FF) and other various
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functions. No commercial roms directly access the display, relying on
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the PRC and BIOS to perform the various communications. This allows for
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the PM to have hardware changes without having to rely on the same
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display controller. </p>
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<p>The display is driven by two data ports, $20FE and $20FF. Both
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ports are read\write, the only difference between them is one sets the
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CTRL line when accessing the data port on the LCD. The port is 8-bits
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wide, and has a small set of standard commands. </p>
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<p>The LCD is probably using the on-glass <s><a href="http://www.solomon-systech.com/products/ssd1828.htm" class="external text" rel="nofollow">SSD1828 LCD controller</a> or something very simliar.</s><a href="http://www.bolymin.com.tw/Doc/SED1565.pdf" class="external text" rel="nofollow">SED1565 LCD Controller</a> </p>
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<p>The controller got <s>96x65</s> 132x65 Graphic Display Data RAM
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(GDDRAM) with 96x64 pixels visible on the LCD. The additional RAM is for
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an unused symbol driver. The PM most likely uses a parallel interface
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to the controller, but serial interface might be available on the
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connector of the LCD. </p>
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<h2>LCD Controller Commands</h2>
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<p>Lower case "x" denotes parameters used by the command. A question mark "?" denotes bits that are don't care. </p>
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<p>The commands in this list are verified to work. The <s>SSD1828</s> datasheet holds <s>much</s> more commands <s>that are hard</s>of which a few are hard to verify <s>or didn't work</s> on the PM. </p>
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<table border="1" class="smallfnt">
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<caption>
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<b>LCD Commands</b>
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</caption>
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<tbody>
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<tr>
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<th> Command </th>
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<th> Description </th>
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<th> Notes </th>
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</tr>
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<tr>
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<td> 0000 xxxx </td>
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<td> Set Column (low nibble) </td>
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<td> xxxx = Column 0-15 (low nibble) </td>
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</tr>
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<tr>
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<td> 0001 0xxx </td>
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<td> Set Column (high nibble) </td>
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<td> xxxx = Column 0-8 (high nibble) </td>
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</tr>
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<tr>
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<td> 01xx xxxx </td>
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<td> Display Start line </td>
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<td> xxxxxx = 0-63 first line on display </td>
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</tr>
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<tr>
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<td> 1011 xxxx </td>
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<td> Set Page </td>
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<td> xxxx = Page (0-8, pages 0-7 are 8px high, Page 8 = 1px high) </td>
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</tr>
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<tr>
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<td> 1000 0001 </td>
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<td> Set Contrast </td>
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<td> Next write to FE or FF sets Constrast Level ($00-$3F) </td>
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</tr>
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<tr>
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<td> 1010 000x </td>
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<td> Segment Driver Direction Select </td>
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<td> x=0 (Normal) 1 (Reverse) Note on Reverse 131 is the leftmost
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pixel and 36 the rightmost visible pixel. Pixels 35-0 are not visible.
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This command only affects the addressing arithmetics on the next
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read/writes and does not change any data that is already displayed. </td>
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</tr>
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<tr>
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<td> 1010 001x </td>
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<td> LCD Voltage Bias </td>
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<td> x=0 (1/9th = normal) 1 (1/7th = darker ) </td>
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</tr>
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<tr>
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<td> 1010 010x </td>
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<td> Entire Display select </td>
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<td> x = 0 (normal) or 1 (all Pixels on) </td>
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</tr>
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<tr>
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<td> 1010 011x </td>
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<td> Invert Display select </td>
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<td> x = 0 (normal) or 1 (invert) effective immediately. Ram is not affected. </td>
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</tr>
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<tr>
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<td> 1010 111x </td>
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<td> Display ON/OFF </td>
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<td> x = 0 (off) or 1 (on) </td>
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</tr>
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<tr>
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<td> 1100 x??? </td>
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<td> Set scan direction (rows) </td>
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<td> x = 0 (normal from row 0 to 63) or 1 (from row 63 to 0 - verical mirror) </td>
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</tr>
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<tr>
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<td> 1110 0000 </td>
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<td> Read Modify Write </td>
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<td> A read to display ram wil not advance the ram pointer. Only a
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write will advance the ram pointer. When active, column commands are not
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available. </td>
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</tr>
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<tr>
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<td> 1110 1110 </td>
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<td> End </td>
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<td> Ends Read Modify Write mode. </td>
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</tr>
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<tr>
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<td> 1110 0010 </td>
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<td> Reset </td>
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<td> Initializes Display. </td>
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</tr>
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<tr>
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<td> 1110 0011 </td>
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<td> NOP </td>
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<td> No Operation. Also used to exit test mode. </td>
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</tr>
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</tbody>
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</table>
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<h2>Data reads/writes</h2>
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<p>Data can be read and written from/to the LCD at any time (but not when contrast command was executed, this is a special case).
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The programmer should make sure that the page and column address pointers are pointing to the correct location. </p>
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<p>When data was read or written the column address automatically increases by one. </p>
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<p>After executing page address and both of the column address set operations data can be written to the selected location. </p>
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<div class="printfooter"> Retrieved from "<a href="http://wiki.sublab.net/index.php/LCD_Controller">http://wiki.sublab.net/index.php/LCD_Controller</a>"</div>
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</div>
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</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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