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1 References  














AS-1000






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From Wikipedia, the free encyclopedia
 


ManufacturerEngebrás Eletrônica e Informática Ltda
TypeHome computer
Release dateOctober 1983; 40 years ago (1983-10)
Introductory priceCr$ 195 000
Operating systemSinclair BASIC
CPUZ80 at 3.25 MHz
Memory16 KB (64 KB max.)
DisplayMonochrome display on television; 24 lines × 32 characters; 64 × 48 pixels semigraphics mode
Backward
compatibility
ZX81

The AS-1000 was a Brazilian clone of the Sinclair ZX81 introduced by Engebrás Eletrônica e Informática Ltda in October 1983.[1][2][3][4][5][6][7][8] The main differences regarding the ZX81 are the internal power supply and larger RAM. The machine had an initial retail price of Cr$ 195 000.[3]

The computer came with 16 KB of RAM, but could be fitted with 32 or 48.[1] There were 8KB of ROM and a 40-key membrane keyboard.[1][9] A regular TV set was used as monitor, with the computer displaying 32 x 22 text characters in monochrome. By using semigraphic characters, it was possible to simulate a 64 x 44 resolution display.

There was one expansion slot at the back of the machine, with the TV RF-out, audio in/out and joystick ports located at the side.[4][10][1] Storage was by means of audio cassette, with a data transfer speed of 300 bauds.

References[edit]

  1. ^ a b c d Velasco, Marcos (2023). "Engebrás AS-1000". MV - Marcos Velasco Software. Retrieved 2023-03-19.
  • ^ "AS-1000 advert". Micro Sistemas. January 1984. Archived from the original on 2018-10-01.
  • ^ a b Inojosa, Ricardo (February 1984). "Os Pequenos Notáveis". Micro Sistemas. pp. 32–40.
  • ^ a b "Micro AS1000 - ZX81". Clube Old Bits. 2008-06-11. Archived from the original on 2008-06-11. Retrieved 2023-01-16.
  • ^ Cardi, Marilza (2002). Evolução da computação no Brasil e sua relação com fatos internacionais (PDF). Universidade Federal de Santa Catarina.
  • ^ "AS-1000 - ROMs". Datassette (in Brazilian Portuguese). 2021-12-16. Retrieved 2023-03-19.
  • ^ "General info for: AS-1000". Spectrum Computing.
  • ^ Barboza, Cícero (1987). Política nacional de informática: 1971 - 1987 (PDF). Universidade Federal de Santa Catarina. p. 41.
  • ^ "Museu virtual dos microcomputadores de 1983". Gilberto M. Retrieved 2023-03-07.
  • ^ "AS-1000". World Of Spectrum Classic. Retrieved 2023-03-19.

  • Retrieved from "https://en.wikipedia.org/w/index.php?title=AS-1000&oldid=1209939675"

    Categories: 
    Sinclair ZX81 clones
    Z80-based home computers
    Computers designed in Brazil
    Goods manufactured in Brazil
    Computer-related introductions in 1983
    Hidden categories: 
    CS1 Brazilian Portuguese-language sources (pt-br)
    Articles with short description
    Short description matches Wikidata
     



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