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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control)
Fernando Martínez Santa
Universidad Distrital
Computer Science & IT Electrical & Electronics Engineering

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Hardware description of a simplified 4-bit softcore processor with BCD capabilities Fernando Martínez Santa; Edwar Jacinto; Holman Montie
International Journal of Electrical and Computer Engineering (IJECE) Vol 10, No 2: April 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (401.483 KB) | DOI: 10.11591/ijece.v10i2.pp1570-1576

Abstract

The objective of the work reported in this paper is to improve a 4-bit softcore processor previously designed in Verilog language, keeping its compact size. This processor was thought to be used as academic and didactic tool for teaching as computers architecture subject as digital circuits subject in the technology faculty of the Universidad Distrital. The new features include arithmetic instruction with input carry, BCD operations enabling, rotating instructions, implementation of input and output register banks, increase of the number of general purpose registers of the data memory, and the reduction of the execution clock cycles per instruction. Additionally, the assembler software was enabled to support macro-instructions to make easy the comprehension of some composed functions. As result, a very compact softcore processor was obtained, by means of a Verilog description done in a single file. This implementation occupies only the 2% of the medium-size FPGA used for the application, reaching a maximum possible working clock frequency of 929 Mhz.
Risk simulation of having direct contact with electric urban networks Fernando Martínez Santa; Fredy H. Martínez; Edwar Jacinto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 5: October 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i5.12482

Abstract

To know the electric risks for the human health having electric discharges on low and medium voltage urban networks, helps to the people to make aware about doing actions of prevention and safety, which reach to prevent injuries and/or accidental deaths. In this paper, simulations on ATP-Draw software over three different specific risk cases were done, based on the concurrent problem presented in the central region of Colombia between august and october when people use to fly kites. The first case analyzed is an individual who has an indirect contact with medium voltage transmission lines by means on a conventional kite, presenting no serious effects on its health. In the second and in the third case, the individual generates a direct contact both low and medium voltage lines, when tries to recover a stuck kite, receiving high health effects even producing death. The main goal of this work is to show the different consequences and effects in the human body which are presented over a person when receiving an electric discharge by direct contact, in order to prevent accidents.
Co-Authors Edwar Jacinto Fredy H. Martínez Holman Montie