HIERARCHY DESCRIPTION METHOD FOR CONTROL CIRCUIT

摘要

PROBLEM TO BE SOLVED: To describe higher-order blocks in a simple and easy-to-see state. ;SOLUTION: At the time of describing hierarchical macros 112a and 112b with a same function in higher-order block graphics 11b and 11c, the same input signal 23 and output signal 24 are described as a name in the input/output terminal of each macro. When the macros 112a and 112b use the medium-order block graphic 12b in common, the same signals 23 and 24 as the macros 112a and 112b in the graphic 12b. When large macros 111a and 111b belonging to the graphic 12b are provided with the same function and both of the use a low-order bloc graphic 13b, the names of the same input and output signals 25 and 26 as the macros 111a and 111b in the graphic 13b.;COPYRIGHT: (C)1999,JPO