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CP-300

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Personal microcomputer
CP 300
ManufacturerPrológica
TypeHome computer
Release date1983; 42 years ago (1983)
Operating systemBASIC Level II (TRS-80 compatible); DOS-500 (TRS-DOS compatible)
CPUZilog Z80A @ 2.0 MHz
Memory64 KB RAM 16 KB ROM
Removable storageCassette tape, floppy disk (optional)
DisplayPAL-M or monitor video out; 32x16, 64x16, 128x48
SoundBeeper
Backward
compatibility		TRS-80 Model III

CP 300 was a personal microcomputer produced by Prológica, a computer company located in Brazil, and introduced in 1983.

General information

It was compatible in software and hardware with the American TRS-80 Model III, and could be considered a domestic and cheaper version of the CP 500, since it was supplied with only one cabinet containing the CPU and a chiclet keyboard. The power supply was external to the cabinet.

Technical details

The CP 300 had 16 KB of ROM and 64 KB of RAM. Its keyboard had 54 keys with auto-repeat function, including two red keys that, when pressed together, forced a reset of the machine.

The display was limited to two text modes of 32x16 or 64x16 characters, and a semigraphic mode of 128x48 pixels.

Sound was generated by an internal cabinet speaker with a volume control at the back.

Expansion capability was limited to a connector located at the back of the machine. In terms of connectivity, it had a TV output (RF modulator, channel 3), a monitor output, and a cassette interface.

Audio cables were supplied with the computer for connection to a regular tape recorder, that could be operated at 500/1500 baud with remote relay activation.

Additionally, it was possible to connect up to four external 5.25" floppy drives, allowing the machine to run DOS-500 (TRS-DOS compatible).

Accessories

  • CP 300 Printer.

Bibliography

  • Micro Computador - Curso Básico. Rio de Janeiro: Rio Gráfica, 1984, v. 1, pp. 49–50.
  • ABREU, Carlos Alberto C. 77 programas para linha TRS-80. Rio de Janeiro: Microkit, 1985.

References

  1. CARDI, MARILZA CARDI (2002). EVOLUÇÃO DA COMPUTAÇÃO NO BRASIL E SUA RELAÇÃO COM FATOS INTERNACIONAIS (PDF) (in Brazilian Portuguese). FLORIANÓPOLIS, SC.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ^ "CP 300". 1000 BiT. Retrieved 2022-12-19.
  3. Velasco, Marcos. "Prológica CP-300". MV Museu de Tecnologia e Software. Retrieved 2023-01-06.
  4. ^ CP 300 Operação e Programação (in Brazilian Portuguese). Editele. 1983.
Prológica
Products
Hardware
Microcomputers
Peripherals
  • CP 450
  • Printer P 500
    • Printer P 500S
  • Printer P 600
  • Printer P 700
  • Printer P 720
    • Printer P 720XT
  • Printer Antares 400
Clones
Software
Operating systems
Companies
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