| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for improving automatic arrangement capable of reducing a wiring length, recording medium recording a program for executing this method and production of semiconductor device using this method. SOLUTION: After automatic arrangement, nets to pass logically equivalent signals are gathered in the same group, the terminal arrangement range of each net is found, and the area of overlapping the terminal arrangement ranges in the same group is found out. Concerning respective two nets having this overlapped area, the input terminal of the maximum wiring length between an output terminal and the input terminal in the overlapped area is found out (S30 and S31), a wiring shortening lengthΔat the time of exchanging the input terminals found out in these respective two nets is calculated (S32) and in the case ofΔ>0, processing for exchanging these two input terminals (S34) is repeated.
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