2020-08-08 15:47:34 +02:00
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<title>XSCHEM PRESENTATION</title>
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<h1>WHY XSCHEM?</h1>
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<h2 style="text-align:left; margin-left:3%;">
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2022-07-04 15:43:18 +02:00
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Have been a Cadence Virtuoso user for many years, in different companies.<br>
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2020-08-08 15:47:34 +02:00
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</h2>
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<h3 style="text-align:left; margin-left:3%;margin-top:10px;">
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<ul>
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2022-07-04 15:43:18 +02:00
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<li>Long startup time</li>
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<li>Creating new components way too complicated (you need a CDF, ask your CAD support and file a ticket).</li>
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2020-08-08 15:47:34 +02:00
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<li>Memory Hog, keeps growing until all Virtual memory exhausted, then crash.</li>
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<li>One process handles all design windows. Process crashes, all work on all windows lost.</li>
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2022-07-04 15:43:18 +02:00
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<li>Netlist extraction and many other functions are slow since all is implemented in skill language.</li>
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2020-08-08 15:47:34 +02:00
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<li>Proprietary file format.</li>
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</ul>
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</h3>
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<h2 style="text-align:left; margin-left:3%;">
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Most Open source schematic editors are not for VLSI
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</h2>
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<h3 style="text-align:left; margin-left:3%;margin-top:10px;">
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<ul>
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<li> Gschem (or its fork, lepton-schematic) and Kicad's eeschema, can not handle complex VLSI designs.</li>
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<li> Xcircuit is one of the very few Open Source tools i found that is good for VLSI design.
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Has very accurate graphics rendering, allows arbitrary rotations, uses postscript as schematic save format.
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This makes scripted generation of schematic files a bit complex. Certainly one of the best tools
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from graphic quality standpoint.</li>
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</ul>
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</h3>
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