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Namco System 21
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<h2 id="system-21-specifications">System 21 specifications</h2> <p>The System 21 consists of four <a href="/facts/Printed_circuit_board/muSR2p43">PCBs</a> housed in a metal crate. </p> <ul><li>Main <a href="/facts/Central_processing_unit/Jxp1bqMV">CPU</a>: 2x <a href="/facts/Motorola/ztqczx68">Motorola</a> <a href="/facts/Motorola_68000/3p2wt2D6">68000</a> @ 12.288 MHz</li> <li><a href="/facts/Digital_signal_processor/YuBXweos">DSP</a> (used for performing <a href="/facts/Dimension/0ktmUyac">3D</a> math): 4x <a href="/facts/Texas_Instruments/88NUhuHF">Texas Instruments</a> <a href="/facts/TMS320/ILsPTHCJ">TMS320C25</a> @ 24.576 MHz (<i><a href="/facts/Starblade/g90blk0N">Starblade</a></i> uses 5x<a href="/facts/TMS320/ILsPTHCJ">TMS320C20</a> instead)</li> <li>Sound CPU: <a href="/facts/Motorola_6809/AM6UosAk">Motorola 6809</a> @ 3.072 MHz</li> <li>Sound Chip: <a href="/facts/Yamaha_Corporation/VaulfF9U">Yamaha</a> <a href="/facts/YM2151/1hAnxRf1">YM2151</a> @ 3.58 MHz</li> <li><a href="/facts/Microcontroller/MKrnAhnm">MCU</a> <a href="/facts/Hitachi/KeK38e82">Hitachi</a> HD63705 @ 2.048 MHz</li> <li>+ <a href="/facts/Namco/DA5E3xqv">Namco</a> custom chips<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a></li></ul> <h2 id="development">Development</h2> <p>It was in development for over three years before release, since around the mid-1980s. According to <a href="/facts/Phil_Harrison/XELxEYFx">Phil Harrison</a> (in the September 1989 issue of <i><a href="/facts/Commodore_User/4aF4xBbl">Commodore User</a></i>), who visited Namco's <a href="/facts/Tokyo/GTvuw4ct">Tokyo</a> office, Atari's <i><a href="/facts/Hard_Drivin%2527/HpTBmLnd">Hard Drivin'</a></i> ran on an earlier, less powerful, version of this hardware, stating that Namco and <a href="/facts/Atari_Games/4H1IdaPo">Atari Games</a> were sister companies at the time and that the System 21 was a shared development.<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> </p> <h2 id="list-of-namco-system-21-arcade-games">List of Namco System 21 arcade games</h2> <ul><li><i><a href="/facts/Winning_Run/cfrX9CV6">Winning Run</a></i> (1988)</li> <li><i><a href="/facts/Winning_Run/cfrX9CV6">Winning Run Suzuka Grand Prix</a></i> (1989)</li> <li><i><a href="/facts/Galaxian_3/nW2J0q4z">Galaxian³</a></i> (1990)</li> <li><i><a href="/facts/Driver%2527s_Eyes/ltPsIgye">Driver's Eyes</a></i> (1990)</li> <li><i><a href="/facts/Winning_Run/cfrX9CV6">Winning Run '91</a></i> (1991)</li> <li><i><a href="/facts/Starblade/g90blk0N">Starblade</a></i> (1991)</li> <li><i><a href="/facts/Solvalou/YCQIcW2c">Solvalou</a></i> (1991) - 3D sequel to <i><a href="/facts/Xevious/jlFHxQxz">Xevious</a></i></li> <li><i><a href="/facts/Air_Combat_(arcade_game)/QrjAL8mM">Air Combat</a></i> (1993)</li> <li><i><a href="/facts/Cyber_Sled/0NzMspJR">Cyber Sled</a></i> (1993)</li> <li><i><a href="/facts/Attack_of_the_Zolgear/7YDVB6P3">Attack of the Zolgear</a></i> (1994)</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"Namco System 21 (Concept)". <a href="https://www.giantbomb.com/namco-system-21/3015-8558/" target="_blank">https://www.giantbomb.com/namco-system-21/3015-8558/</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Commodore User Magazine Issue 72". September 1989. <a href="https://archive.org/stream/commodore-user-magazine-72/Commodore_User_Issue_72_1989_Sep#page/n89/mode/2up" target="_blank">https://archive.org/stream/commodore-user-magazine-72/Commodore_User_Issue_72_1989_Sep#page/n89/mode/2up</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>