JPS62202268A - Circuit processor - Google Patents

Abstract

PURPOSE:To decrease computer resources necessary to analyze a circuit more than ever by providing a circuit simplifying means to decrease the number of the terminal and the connecting coefficient read from a circuit storage means more than ever and convert the information concerning connection to an equal circuit. CONSTITUTION:As information concerning respective terminals in the circuit, which is an object, a connecting line between terminals and connection, delaying information is stored into a circuit storage means 1, the number of the terminal and the number of a connecting line read from the means 1 by a circuit simplifying means 2 is decreased more than ever and the information concerning the connection corresponding to a delay time is converted to an equal circuit. The element, terminal, connecting line and delay information of the converted circuit are stored into a simplifying circuit storage means 3, and a circuit analyzing means 4 executes the delay analyzing based on the information read from the means 3 and displays the delay analyzing result. Thus, for example, connecting lines 8 and 9 are converted to a connecting line 12 in which the delay time comes to be the sum of the connecting lines 8 and 9, and the computer resources necessary to analyze the circuit can be decreased more than ever.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a circuit processing device.

[Conventional technology-]

Conventional circuit processing devices analyze circuits using circuit information provided by circuit storage means as is.

As such a conventional technique, there is [Delay Time Analysis System - NELTAS2-] (Information Processing Society of Japan, Design Automation Study Group Materials, Design Automation 14-3, 1982).

[Problem that the invention seeks to solve]

However, the above-mentioned conventional circuit processing device analyzes the circuit using the circuit information provided by the circuit storage means as it is, and therefore requires a large amount of computer resources to analyze the target circuit. There is a drawback that it does.

[Failure to solve the problem]

The circuit processing device of the present invention includes a circuit storage means for storing information regarding terminals of a circuit, connections between the terminals, and each connection, and a circuit storage means that stores the circuit with a smaller number of terminals and connections and information regarding the connections. circuit simplification means for converting into an equivalent circuit; simplified circuit storage means for storing information about the circuit converted by the circuit simplification means; and analysis of the circuit from the simplified circuit storage means. and circuit analysis means for displaying the obtained results.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. Here, an example of delay analysis of a logic circuit will be described.

The circuit processing device shown in FIG. 1 includes circuit storage means 1, circuit simplification means 2, simplified circuit storage means 3, and circuit analysis means 4.

The circuit storage means 1 stores delay information as information regarding each terminal in the target circuit and the connection lines and connections between the terminals. The circuit simplification means 2 converts the circuit read out from the circuit storage means 1 into a circuit having a smaller number of terminals and a smaller number of connection lines, and having equivalent information regarding the connections corresponding to the delay time. The simplified circuit storage means 3 stores the elements, terminals, connection lines, and delay information of the circuit converted by the circuit section rationalization means 2.

The circuit analysis means 4 performs delay analysis based on the information read from the simplified circuit storage means 3 and displays the delay analysis results.

FIG. 2 (al, (bl) is an example of simplification by the circuit simplification means 2. By simplifying the circuit shown in FIG. 2 (al), the circuit shown in FIG. 2 (fb) is generated. At this time, terminals 5 and 7 become terminals 10 and 11, respectively, connection wires 8 and 9 become connection wire 12, and connection ffM
The delay time of 12 is the sum of the delay times of connection lines 8 and 9.

Along with this simplification, the terminal 6 is eliminated.

3(a) and 3(b) are other examples of simplification by the circuit simplification means 2. FIG. By simplifying the circuit shown in FIG. 3fa), the circuit shown in FIG. 3(b) is generated. At this time, terminals 13, 14, and 16 are respectively terminal 2.
0 to 22, and for the connection lines 17 to 19, the total connection time is the sum of the delay times of the connection lines 18 and 19.

Along with this simplification, the terminal 15 is eliminated.

〔Effect of the invention〕

Before circuit analysis, the circuit processing device of the present invention converts a target circuit into a circuit with fewer terminals and connection wires and equivalent connection information, thereby reducing the computer resources necessary for analyzing the circuit. This has the effect of reducing the amount of damage.

[Brief explanation of drawings]

FIG. 1 is a diagram showing one embodiment of the present invention, and FIGS. 2 (a) and (b) are examples of terminal and connection information of the logic circuit before and after conversion by the circuit simplification means shown in FIG. 1. FIGS. 3(a) and 3(b) are connection state diagrams for explaining the terminals and connection information of the logic circuit before and after conversion by the circuit simplification means shown in FIG. 1. FIG. 1...Circuit storage means, 2...Circuit simplification means, 3...Simplification circuit storage means, 4...
...Circuit analysis means, 5-7, 10, 11.13-16
．． 20-22...Terminal, (aノ$2I!r 1,000 3 sides

Claims (1)

[Claims] A circuit storage means for storing information regarding terminals of a circuit, connection lines between the terminals, and each connection; and a circuit for converting information read from the circuit storage means into a circuit having a smaller number of terminals and connection wires and having equivalent information regarding the connections. A simplification means, a simplification circuit storage means for storing information of the circuit converted by the circuit simplification means, and an analysis is performed based on the information read from the simplification circuit storage means and the analyzed result is displayed. A circuit processing device comprising circuit analysis means.