For creating symbols automatically, select Symbol tab / File/New Symbol using Wizard from Library Editor. This utility provides an easier interface for creating symbols. The Symbol creation wizard is as shown in figure below.
1. Specify the name and type of the symbol. For eg : Specify the symbol name as 7408 and symbol type as general symbol. Click on Next button to move to the parameter specification window.
2. Specify the parameters, the description about the parameters that is to be specified while creating the symbol for 7408 is given below. Click on Next button, a new window appears which specifies the orientation of all entries, whether or not they are invertible, invisible etc.
No: of Entries (n) :3
Entry placement grid (P) :0.1000’’
No: of Pitch for terminal line length (nP) :2
Orientation of entries :Auto
Positions:
Component name :Top
Component description :Top
Line Size : :0.0020’’
Symbol Type :Select Digital®Gate®AND from the drop down menu.
Symbol Description :AND Gate
Check display entry names as text check box.
3. In the new window edit, the entry name attributes. You can also indicate the swap level and Sim Name. An import pinlist option is also available.
The Pin details format should be like Pin-Number, Pin-Name, Pin-Orientation (valid Pin-Orientations are *Left (L), Right (R),Bottom (B),Top (T). Any invalid format will produce error in operation. Comments should start with a '*' character.
Window after importing the list is as shown below.
4. Click on Next button moves to a new window where the pitch between two entry pins can be specified.
For example if the pitch between the pins has to be changed to 4 then give 1, 2, 4 in the field allowed for entering and click on the up arrow and then click on the arrow directed to right. Then the pitch between the pins is changed as applied.
Click on Next button moves to a new window, which displays the summary of information about the symbol created using the wizard.
5. Click Finish to complete the process.
From the File Menu choose Save Symbol As. In the new Window Set the Symbol Name and the Lib Name.
Check On top of search sequence check box and Save.
