| 摘要 |
PROBLEM TO BE SOLVED: To efficiently solve a problem by giving appropriate adjacent spacing conditions converging on a troubling net, causing wiring delays and crosstalks. SOLUTION: A wiring processing section 36 gives first adjacent spacing conditions that do not violate wiring, based on a net list of semiconductor circuits, to execute wiring processing. A noise analysis section 40 extracts an error net causing noise errors, by a noise analysis of the wiring prepared by the wiring processing section 36. A wiring condition changing section 42 sets second adjacent spacing conditions for eliminating the noise error, to the error net extracted in a noise analysis step, and gives the appropriate adjacent spacing conditions convergingly to the troubled net causing wiring delays and crosstalks, while giving first adjacent spacing conditions, to nets other than the error net, and carries out wiring processing again, based on the net list. COPYRIGHT: (C)2006,JPO&NCIPI
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