Engineering:CP-300
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| Manufacturer | Prológica |
|---|---|
| Type | Home computer |
| Release date | 1983 |
| Operating system | BASIC Level II (TRS-80 compatible); DOS-500 (TRS-DOS compatible) |
| CPU | Zilog Z80A @ 2.0 MHz |
| Memory | 64 KB RAM 16 KB ROM |
| Removable storage | Cassette tape, floppy disk (optional) |
| Display | PAL-M or monitor video out; 32x16, 64x16, 128x48 |
| Sound | Beeper |
| 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.[1][2][3]
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.[4]
Technical details
The CP 300 had 16 KB of ROM and 64 KB of RAM.[2] 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.[2][4]
Sound was generated by an internal cabinet speaker with a volume control at the back.[4]
Expansion capability was limited to a connector located at the back of the machine.[4] In terms of connectivity, it had a TV output (RF modulator, channel 3), a monitor output, and a cassette interface.[2]
Audio cables were supplied with the computer for connection to a regular tape recorder,[4] 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).[2]
Accessories
- CP 300 Printer.[4]
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
- ↑ CARDI, MARILZA CARDI (2002) (in pt-br). EVOLUÇÃO DA COMPUTAÇÃO NO BRASIL E SUA RELAÇÃO COM FATOS INTERNACIONAIS. FLORIANÓPOLIS, SC. https://core.ac.uk/download/pdf/30365442.pdf.
- ↑ 2.0 2.1 2.2 2.3 2.4 "CP 300". https://www.1000bit.it/scheda.asp?id=1421.
- ↑ Velasco, Marcos. "Prológica CP-300". https://www.velasco.com.br/index.php?item=prologicacp300-1.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 (in pt-br) CP 300 Operação e Programação. Editele. 1983. https://datassette.org/manuais/tandy-trs-80/cp-300-operacao-e-programacao.
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