Codimex CD-6809
Codimex CD-6809
ManufacturerCodimex
Release date1983 (1983)
Lifespan1985 (1985)
Units sold380
Operating systemMicrosoft Extended Color BASIC, Tandy RSDOS, Microware OS-9, TSC Flex9
CPU6809E @ 0.895 / 1.79 MHz
Memory32 KB
DisplayRF out, PAL-M
GraphicsMC6847 video display generator
Sound6-bit DAC
Backward
compatibility		TRS-80 Color Computer

The Codimex CD-6809 was an 8-bit home computer produced in Brazil by the company Codimex Imp.Exp. de Computadores Ltda from Porto Alegre.[1][2][3] It was introduced in early 1983, during the Brazilian "Market Reserve" period, and based on the TRS-80 Color Computer.[4][5][6][7]

The CD-6809 was the first Brazilian home computer compatible with the TRS-80 Color line.[4][8] It was marketed as a computer for small business, entertainment and self employed professionals, and was sold with a 149-page user manual.[9][10]

Around 380 units were produced  at the Porto Alegre plant.[11] The machine can be emulated under MAME.[12]

Technical features

The basic features of the Codimex CD-6809 are similar to the TRS-80 Color Computer:[2]

  • CPU: Motorola 6809E , 895 kHz to 1.79 MHz
  • Memory:
    • ROM: 16 KBytes (containing “Color BASIC 1.1” and “Extended Color BASIC 1.0”)
    • RAM: 32 KBytes
  • Keyboard:
    • Built-in, 53-keys
  • Display: Motorola 6847, 9 colors
    • Text mode (with 32 x 16 characters)
    • Low resolution graphics (with 64 x 32 pixels)
    • Medium and high resolution graphics (up to 256 x 192 pixels, 2 colors per pixel)
  • Expansion port (cartridges, 40 pin)
  • Other ports:

The machine had a unique "Reverse Video" switch on the back, that displayed a black background with green characters.[2]

See also

References

  1. ↑ Campos, Daniel. "Codimex CD-6809: A tríade agora está completa! | AMX PROJECT" (in European Portuguese). Retrieved 2023-03-20.
  2. 1 2 3 "Codimex CD6809". Família TRS Color (in Brazilian Portuguese). 2020-08-03. Retrieved 2023-03-20.
  3. ↑ "Codimex CD-6809". MV - Marcos Velasco Software. Retrieved 2023-03-20.
  4. 1 2 "Equipamentos: CD-6809" (PDF). Micro Sistemas. No. 23. August 1983. p. 42.
  5. ↑ "Codimex 6809". www.old-computers.com. Retrieved 2023-03-20.
  6. ↑ "Como lançar um computador na reserva de mercado". Datassette (in Brazilian Portuguese). 2015-08-13. Retrieved 2023-03-20.
  7. ↑ "Codimex CD-6809 - Material de Lançamento". Datassette (in Brazilian Portuguese). 2015-04-26. Retrieved 2023-03-20.
  8. ↑ Daniel, Campos (2016). "The dawn of the CoCo clones in Brazil". Vintage is The New Old. Retrieved 2023-03-20.
  9. ↑ "Codimex CD-6809 - Apresentação do Projeto para a Secretaria Especial de Informática". Datassette (in Brazilian Portuguese). 2015-05-05. Retrieved 2023-03-20.
  10. ↑ Codimex CD-6809 - Manual Do Usuário (PDF). Codimex. 1983.
  11. ↑ Campos, Daniel (July 2013). "Entrevista: Davi Menda - Sócio-fundador da Codimex" (PDF). Jogos 80. No. 11. p. 17. Archived from the original (PDF) on 2016-10-27.
  12. ↑ "CD-6809". mame.spludlow.co.uk. Retrieved 2023-03-20.


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