CP-300

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.