NanDigits Design Automation

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2.1. GofTrace Overview:

• GofTrace is a fully interactive Netlist to Schematic tool.
• A lot of EDA tools draw much more than enough logic when tracing fanout/fanin. Even worse they draw the fixed format schematic, you can't adjust gates position. After several trace iteration, you most likely get confused.
• GofTrace gives much flexibility in tracing and drawing schematic. You can place gates anywhere you like, and after schematic is drawn, you still can edit placement of gates. The 'Place & Route' feature makes creating schematic much easier. And 'extract logic cone' draws the whole logic cone you like at one click.
• If some gates are useless in your trace, simply delete them by press Delete key on keyboard.
• Use mouse middle button (Press both buttons if the mouse has only two buttons) to click on the pin you want to trace. 
• If the pin is input port, the driver cell will appear with a line connecting to the pin, move the cell while moving the mouse, release the mouse middle button to place the cell.
• If the pin is output port, all fanout cells will appear with their pins connecting to the port by a line. Move the cells while moving the mouse, release the mouse middle button to place the cells.

• You can always move gates after the circuit is drawn.

• Choose manually place & route or automatically place & route.

• GOF automatically places & routes the gates on the schematic.

• You can manually route the wires as you like.

• Click zoom in , zoom out buttons to zoom in/out schematic  

• Do Extract Logic Cone to speed up bringing up related gates.

• The whole logic cone driving the selected gate is drawn.

• Check ECO checkbutton to enable GofECO, ECO mode. In ECO mode, trace function is still valid. Anything deleted will be saved as ECO actions. 

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