Placing Components Components


Now that you have set up the project and library, it is time to add components to your schematics.In Project Manager, click Design Entry .



Allegro Design Entry HDL appears displaying the design name in the title bar.

Learn How to zoom


To proceed further you much learn how to zoom properly. There are four buttons for zoom functions

1. Zoom points
2. Zoom fit
3. Zoom In
4. Zoom Out

The last three are straight forward, but the first one is most useful and important one ( and is unfortunately not intuitive to beginners). To use this zoom, click on the zoom points and click on the top left of the imaginary rectangle where you want to zoom in. Next click on the bottom right corner of the imaginary rectangle. This zooms the rectangle area you wish to zoom.

Placing Components


We will now learn how to add components to the schematics. Zoom to some where on the top left area of the schematics.

Choose Component - Add to start the procedure of adding components.

The Component Browser dialog box is displayed.

Select local_lib in the Library field.

The components of the local_lib library appear in the Cells list.

Select mc68020 from the Cells list and click Add.

Click in the Design Window.

The mc68020 component is placed on the schematic. Zoom is suitably, so that you can read the pins of mc68020.

Repeat the above process and place two resistors, with symbol name res next to the reset pin of the mc68020 .

Repeat the above process and place the symbol named vcc somewhere in the middle of the two resistors.

Next click on the Ground button and place the ground symbol somewhere next to the second resistor.

This youtube capture the complete sequence. Notice how the zoom has also been shown.



In the next tutorial we will connect these components.