Wyniki wyszukiwania - BazTech

1

On Transformation of a Logical Circuit to a Circuit with NAND and NOR Gates Only

Baranov S., Karatkevich A.

International Journal of Electronics and Telecommunications

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2018

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Vol. 64, No. 3

373--378

EN

In the paper we consider fast transformation of a multilevel and multioutput circuit with AND, OR and NOT gates into a functionally equivalent circuit with NAND and NOR gates. The task can be solved by replacing AND and OR gates by NAND or NOR gates, which requires in some cases introducing the additional inverters or splitting the gates. In the paper the quick approximation algorithms of the circuit transformation are proposed, minimizing number of the inverters. The presented algorithms allow transformation of any multilevel circuit into a circuit being a combination of NOR gates, NAND gates or both types of universal gates.

2

Analiza porównawcza narzędzi syntezy Altera Quartus II i Synthagate

Węgrzyn M., Karatkiewicz A.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 12

380-383

PL

W artykule przedstawiono analizę porównawczą skuteczności działania przemysłowego narzędzia syntezy układów cyfrowych FPGA (na przykładzie systemu Altera Quartus II), a narzędzia syntezy o pochodzeniu akademickim (Synthagate). Eksperymenty przeprowadzono z wykorzystaniem szeregu przykładów opisujących automaty skończone. Przedyskutowano wpływ sposobu opisu automatów na wyniki syntezy. Stwierdzono, że system Synthagate daje na ogół lepsze wyniki pod względem wykorzystania zasobów układów programowalnych oraz działa znacznie szybciej, niż narzędzie przemysłowe.

EN

The paper presents comparison between efficiency of an industrial FPGA design software tool Altera Quartus II and similar design software tool Synthagate by Syntezza company of an academic origin. The experiments were performed using a series of examples describing the Moore finite state machines; one-hot state encoding was used in all cases. Area (number of used logical blocks) was the main parameter used for the comparison. Influence of the way of FSM description (in VHDL language) on the quality of synthesis was studied. The obtained results show that Synthagate in almost all cases performs synthesis more efficiently and essentially quicker than Altera Quartus. Section 1 presents motivation of the research; Section 2 describes problems which had to be solved to provide correctness of experimental comparison. In Section 3, the experimental results are presented. Section 4 describes still existing problems related to the comparison, which have to be solved. Section 5 presents the conclusions.

3

Experimental Comparison of Synthesis Tools Altera Quartus II and Synthagate

Węgrzyn M., Karatkevich A.

International Journal of Electronics and Telecommunications

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2013

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Vol. 59, No. 4

357-362

EN

The paper presents comparison between efficiency of an industrial FPGA design software tool Altera Quartus II and similar design software tool Synthagate by Syntezza company of an academic origin. The experiments were performed using a series of examples describing the Mealy finite state machines; onehot state encoding was used in all cases. Area (number of used logical blocks) was the main parameter used for the comparison. Influence of the way of FSM description (in VHDL language) on the quality of synthesis was studied. The obtained results show that Synthagate in almost all cases performs synthesis more efficiently and essentially quicker than Altera Quartus. Section I presents motivation of the research. Section II reminds the notion of FSM. Section III describes problems which had to be solved to provide correctness of experimental comparison. Section IV presents some details about state encoding way used in the experiments. In Section V, the experimental results are presented. Section VI describes the problems related to the comparison which still have to be solved. Section VII presents the conclusions from the experiments. Section VIII suggests possible reasons of the detected situation.