| 摘要 |
PROBLEM TO BE SOLVED: To efficiently arrange wirings. SOLUTION: A plurality of circuit blocks is arranged at first, and a plurality of virtual wirings is arranged temporarily in a clearance between the plurality of virtual wirings. Then, a plurality of leading-out wires is led out from the plurality of circuit blocks, based on connection information, so as to be connected to the virtual wirings arranged temporarily. Conditions of the leading-out and the plurality of virtual wirings are verified thereafter. Arranging positions of the plurality of virtual wirings are changed in response to a verified result therein to prepare a wiring pattern. COPYRIGHT: (C)2003,JPO
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