Design Flow

The following steps provide an overview of the EPIC design flow.

1. Enter your design using a schematic design tool or HDL (Hardware Description Language).
   
   
2. Save your design in EDIF (Electronic Data Interchange Format).
   
   
3. Run NGDBuild, which creates an NGD (Native Generic Database) file.
   
   
4. Run the MAP program, which creates an NCD (Xilinx Circuit Description) file.
   
   
5. Load your design into EPIC make necessary changes, and save the modified design as an NCD file.
   
   
6. Run the PAR (Place and Route) program on the modified NCD file.
   
   

The following figure shows the complete Xilinx Design Flow, including editing your design in EPIC.

Figure 1.1 Xilinx Design Flow