CSim is a MOS switch-level simulator. It simulates cells without circuit parameters, such as the sizing of transistors. To tackle the challenges caused by the lack of circuit parameters, a new transistor-level levelization algorithm is developed. SPICE simulator is used as reference simulator, CSim is accurate in a sense that the simulation results for a cell are consistent with SPICE simulation results for any transistor sizing configurations. The program was tested on all possible cells up to 4 transistors and was able to report accurate results for all levelizable cells. For more information, please refer to the CSim tech report.
Note: CSim requires C++11 support.
$ make$ ./CSim <netlist_file>
For detailed netlist syntax, please refer to CSim Netlist Syntax.
* This is an invertor
M0001 VDD IN001 OUT01 VDD PMOS ; This is the pull up network
M0002 OUT01 IN001 GND GND NMOS
* End of the file
$ ./CSim inv.csim--- netlist ---
M0001 VDD IN001 OUT01 VDD PMOS
M0002 OUT01 IN001 GND GND NMOS
--- simulation results ---
--- precision level 1 ---
|IN001||OUT01|
| 0 || 1 |
| 1 || 0 |
--- precision level 2 ---
|IN001||OUT01|
| 0 || 1 |
| 1 || 0 |
CSim uses different simulation models which are described in the CSim tech report.
A brief discussion about different simulation models can be found in the Simulation Models CSim wiki page.
Licensed under the Apache License 2.0 License.