This is the Windows app named ePnR whose latest release can be downloaded as MyePnR_090.zip. It can be run online in the free hosting provider OnWorks for workstations.
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ePnR is a simple Integrated Circuit (IC) block standard cell placement & routing tool. ePnR currently supports only circuit blocks using equal height standard cells arranged in one or more channels of user configurable length. Standard cells are described in a simple text based library (compliant with eLogSim). Placement follows initially the cell call order in the SPICE like circuit input netlist. However, a placement optimization, aiming at minimum weighted accumulated wire length, by simulated annealing is available. Routing consists of channel routing as first step. If un-routed connections are left, Maze routing can (optionally) be applied. ePnR does not guarantee completely finished routing. However, un-routed connections will be left with rubberband connections and marked start and end points for subsequent manual routing using a third party layout editor. ePnR outputs in CIF 2.0 and GDS stream format readable by e.g. the free KLayout editor.
- Simple standard cell placement & routing tool for small-to-medium size IC blocks
- 4-5 layers of routing
- Tool precompiled for popular platforms (Windows 10/11, Linux, Raspberry Pi4+)
- Easy to compile source with Lazarus IDE (aarch64,arm,amd64,i386)
- CIF 2.0 and GDSII output
Non-Profit Organizations, Education, Engineering
Gnome, Win32 (MS Windows)
This is an application that can also be fetched from https://sourceforge.net/projects/epnr/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.