JPS6473462A - System for re-composite-processing circuit - Google Patents

Abstract

PURPOSE:To eliminate the re-correction of a circuit graphic when a circuit is applied with synthetic processing again by applying a circuit synthetic processing, executing circuit alteration, which is logically coincident, and altering a part of a function graphic. CONSTITUTION:At the time of synthesizing a circuit, a corresponding table generation means 2 generates an element corresponding table showing an element on a circuit graphic corresponding to the function block and a net corresponding table showing a net on the circuit graphic corresponding to the net on the function graphic. At the time of altering the function graphic, the correction processing means 3 sets a flag to the altered function block on the element corresponding table and the reduced net is removed from the net corresponding table. For executing circuit composite again, an altered part retrieval re-synthesized processing means 4 retrieves to the net where corresponding relation with the element is maintained by using the net corresponding table with the function block which is altered in the function graphic, and re-synthesized processing is executed only in the range. Even if there is the alternation of the circuit graphic which is logically coincident, the altered part of the circuit graphic is remained as it is, and application of re-correction to the circuit graphic is made unnecessary.