Semiconductor circuit design support technique

Abstract

A computer readable storage medium stores a semiconductor circuit design support program that causes a computer to execute a process. The process includes identifying wirings connected to a selected cell to be processed from an observation target circuit data storage device storing position data of each cell on a semiconductor chip on which an observation target circuit is implemented for which operations are observed in simulation and data of wirings connected to each cell. The process further includes determining an operational ratio for the selected cell from operational ratios of the identified wirings, reading out position data of the selected cell from the observation target circuit data storage device, and generating and outputting image data in which display data corresponding to the operational ratio of the selected cell is disposed according to the position data of the selected cell on a display area corresponding to the semiconductor chip.

What is claimed is: 
     
         1 . A computer readable storage medium storing a semiconductor circuit design support program for causing a computer to execute a process comprising:
 identifying wirings connected to a selected cell to be processed from an observation target circuit data storage device storing position data of each cell on a semiconductor chip on which an observation target circuit is implemented for which operations are observed in simulation and data of wirings connected to each cell;   determining an operational ratio for said selected cell from operational ratios of said identified wirings;   reading out position data of said selected cell from said observation target circuit data storage device; and   generating and outputting image data in which display data corresponding to said operational ratio of the selected cell is disposed according to said position data of said selected cell on a display area corresponding to the semiconductor chip.   
     
     
         2 . The computer readable storage medium as set forth in  claim 1 , wherein said display data have a color or brightness predetermined for a section pertinent to said operational ratio for said selected cell among a plurality of sections predefined for said operational ratio. 
     
     
         3 . The computer readable storage medium as set forth in  claim 1 , wherein said operational ratio data storage device stores data of said operational ratios at a plurality of times, and
 said determining and said generating and outputting is executed for said operational ratios at said respective times from a processing start time to a processing end time.   
     
     
         4 . The computer readable storage medium as set forth in  claim 1 , wherein said determining comprises determining, as said operational ratio of said selected cell, a maximum value of said operational ratios of output wirings among the identified wirings.