HINTS & TIPS

Q: Is it possible to perform a DRC check on portions rather than on the whole circuit useful when only 2 or 3 errors to fix ?

A: You may clip out the required piece of layout (menu Tools>>Clip Out). This operation preserves coordinates and hierarchy of instances that were not cut during clipping. Then you may run DRC on the clip and see if there are any errors. There are two problems:

• at the border fringe errors appear that are not actually present in the original layout;
• there is no direct access to erratic objects in the original layout: you must look at the coordinates where the error is reported in the clip and then find the same place in the original (You may use the operation Edit>>Position Cursor). Therefore you must proceed as follows.