NanDigits Design Automation

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3.2. Add Cells.

• Press 'Add cell' button.

• 'Add ECO cell' window pops up.

• Type 'and' in Filter entry. Case ignored.   
• Select AND2X4.

• AND2X2 cell appears on the Schematic.
• Load laoerary.testenr1_reg cell. Check Partial Schematic to see how to load cell from GofViewer.

• Select net n2183, and press 'Delete selected item' button.

• The line is deleted, and U3567/S0 has no net connected to it.

• Mouse-middle-button press on U3567/S0, don't release, move to ECO cell AND2X4 output pin. One line is drawn with mouse moving.

• Release mouse-middle-button.
• The line is connecting U3567/S0 and eco012345_ECOCELL_0/Y.
• And the ECO cell's hierarchical path is automatically updated as same as U3567.
• U3567/S0 has net eco012345_ECONET_0_Y connected to it.

• Do the same to connect eco012345_ECOCELL_0/A to U2612/Y.
• eco012345_ECOCELL_0 and laoerary.testenr1_reg are in different hierarchy.
• But you have no need to manually add a port.
• Mouse-middle-button press on ECOCELL/B and don't release, move to laoerary.testenr1_reg/Q.

• Release mouse-middle-button, a port is automatically inserted.
• And connections are complete.

• You can press 'Undo' button to revert back the previous status, until no more ECO actions.
•  Save ECO when all operations are done.

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