# XSCHEM PRESENTATION

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# WHY XSCHEM?

## Ex frustrated Cadence Virtuoso user.

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- Don't want to wait a minute for a simple amplifier netlist.
- Creating new components was way too complicated (you need a CDF, ask your CAD support and file a ticket).
- Memory Hog, keeps growing until all Virtual memory exhausted, then crash.
- Start your icfb session, go get a coffee, when back it's hopefully up and running.
- One process handles all design windows. Process crashes, all work on all windows lost.
- Many functions (search/replace and others) take way too long to complete. Everything is done in skill.
- Proprietary file format.
- I hate Skill and Lisp. Not that these are bad languages, its my fault.

## Most Open source schematic editors are not for VLSI

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- Gschem (or its fork, lepton-schematic) and Kicad's eeschema, can not handle complex VLSI designs.
- Xcircuit is one of the very few Open Source tools i found that is good for VLSI design. Has very accurate graphics rendering, allows arbitrary rotations, uses postscript as schematic save format. This makes scripted generation of schematic files a bit complex. Certainly one of the best tools from graphic quality standpoint.