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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Um sistema BASIC multiusuario para o COBRA-400

Cetolo, Maria Tereza Azevedo 15 July 2018 (has links)
Orientador : Celio Cardoso Guimarães / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Ciencia da Computação / Made available in DSpace on 2018-07-15T02:31:21Z (GMT). No. of bitstreams: 1 Cetolo_MariaTerezaAzevedo_M.pdf: 1424263 bytes, checksum: 72c7c54716150e70a15545e8dc25a7a9 (MD5) Previous issue date: 1980 / Resumo: Neste trabalho é descrita a implementação de um sistema multi usuário ("Time sharing") em torno da linguagem BASIC escrito em linguagem de montagem do Intel 8080. São elaboradas as modificações no interpretador para torná-lo reentrante as estruturas de dados para compartilhamento de memória, o sistema de escalonamento do processador e as rotinas de Entrada/Saída para interface com o "hardware" e com o sistema de arquivos do COBRA 400 / Abstract: This paper describes an implementation of a BASIC time-sharing system an a COBRA-400. The system was developed starting from a BASIC Interpreter written in Intel 8080 Assembly/language. We describe the changes in the interpreter in order to make it reentrant, the data structures for sharing memory among user processes and the scheduler organization. Input/Output / routines were also rewritten for compatibility with the COBRA-400 hardware and file system / Mestrado / Mestre em Ciência da Computação

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