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HI I would like to know how to incorporate changes of a new macro on an existing clean routed design.Is it that I load the old config file with the new library of the new macro and then load the old def of the routed design.Considering theres no change in size and pin positioning of the new macro wrt to the old one.Or any eco commands are required to execute this task.Any inputs, I would be gratefulThanksJyothi
Hi Jyothi,If the macro has not changed size or pin placement, then you are in good shape. Just point to the updated macro files (LEF, .lib, etc.) and load the design as you normally would. Then you will probably need to recheck timing and DRC/LVS. You don't need any ECO commands for this kind of change. - Kari
Hi ,Id like some information on the ECO flow. To meet timing, Id like to move a cell manually and place it elsewhere. Can you guide me on the steps to legalise the placement and routing of the cell in the new location?Thanks,Arun
Hi Arun,If you move a cell by hand, it should snap to a legal placement. Of course, you may be moving it to a place where there's not quite enough room or something, and need to legalize the placement of cells around it I guess. You can run checkPlace to see if your new placement is legal. If it's not, then use refinePlace or ecoPlace. Then, to fix the routing, you can use NanoRoute in ECO mode.Hope that helps, I know it's very general.- Kari