| <h3 id='___new_net'>new_net</h3> | |
| <pre>ECO command. Create a new net | |
| <b>Usage:</b> @return = new_net($new_net, $reference, $new_instance, $connections); | |
| $new_net: The new net to be created, if not defined, the tool assigns one automatically | |
| $reference: The leaf gate name to drive the net. | |
| $new_instance: The instance name of the new cell, or leave it empty to get automatically assigned. | |
| $connections: The new gate input pins connections | |
| Supported formats, 1. Detail format: ".A(net0),.B(net1),.C(net2)" | |
| 2. Simple format: Connect to the pins in alphabetical sequence | |
| "net1,net0,net2" indicating .A(net1),.B(net0),.C(net2) | |
| 3. Mixed format: "instance/pin" and net, "U408/Y,U409/Y,net2" indicating | |
| A to U408/Y, B to U409/Y and C to net2 | |
| 4. The "instance/pin" can have sub-instance hierarchy, "u_abc/U408/Y" | |
| @return: Have the new created instance and net name. | |
| $return[0] : New created instance. | |
| $return[1] : New created net. | |
| <b>Note:</b> Hierarchical path is supported in any net or instance in the command, | |
| for instance, new_net('u_abc/net124', ... | |
| If the command is called in the context of return a scalar, the new created net name is returned. | |
| The new net is assumed to be driven in the path it is created, | |
| for instance, new_net('u_abc/eco12345_net124'); | |
| eco12345_net124 should be driven in sub-instance u_abc after it is created. | |
| <b>Examples:</b> | |
| #1. NAND2x2 instance name 'U_eco_123' driving new net 'net123' | |
| new_net("net123", "NAND2X2", "U_eco_123", ".A(n200),.B(n201)"); | |
| #2. INVX2 with instance name 'U_inv' is created in u_abc sub-instance | |
| # and the input pin of the new invert is driven by n200 in current top level | |
| # port would be created if n200 doesn't drive input port to u_abc | |
| new_net("u_abc/net123", "INVX2", "u_abc/U_inv", "n200"); | |
| #3. Create a new net "net500" | |
| new_net("net500"); | |
| #4. Create a new instance with new net tied to output pin, input pin is floating. | |
| # $return[0] is new created instance, $return[1] is new created net. | |
| @return = new_net("", "INVX2", "", ""); | |
| </pre> |