TZX Player

A player for 8bit computers tapes files in TZX format.

This project is WIP.

Features:

• Play/stop/rewind etc. controls through keyboard shortcuts
• Export to WAV file
• Counter support (reset, goto etc..)
• Tape player remote control through GPIO module input soldered in the CPC tape player PCB

WIP state:

• Not all blocks types of the TZX specification are supported (Most data related though, which make almost every Amstrad CPC cdt file to be read)
• Tested on Linux only
• Looking for a more standard interface for GPIO remote control feature. My current device, which is a Numato Labs 8 channels, does not support standard kernel libgpiod framework and expose a proprietary command set which requires specific code.

Build

$ ./build.sh

exec

$ ./bin/tzx-player COMMAND

or to show usage

$ ./bin/tzx-player help

Usage

Usage: tzx-player COMMAND [cmd opts]

Play 8bits computers data tapes as TZX files

Commands:
  help                Show this help message
  convert             Convert TZX tape to an audio PCM Wav file
    Args:
      tzx-player convert INPUT_TZX_FILE OUTPUT_WAV_FILE
    Options:
      -s int              Sampling rate (default: 44100)
      -b int              Bit depth (default: 8, possibles values: 8 or 16)
      -f float            Speed factor: multiply the speed of the tones (experimental) (default: 1.0)
  info                Output TZX tape informations
    Args:
      tzx-player info INPUT_TZX_FILE
  play                Play a TZX tape
    Args:
      tzx-player play INPUT_TZX_FILE
    Options:
      -s int              Sampling rate (default: 44100)
      -b int              Bit depth (default: 8, possibles values: 8 or 16)
      -g port:baudrate:ionbEnable tape remote control using a GPIO device. Support only Numato labs GPIO Modules for now
      -f float            Speed factor: multiply the speed of the tones (experimental) (default: 1.0)
   Player control keystrokes:
       Space : Toggle play/pause
       p : Pause
       s : Save current tape position
       g : Set tape to last saved position

This project is written in Go. It makes use of PortAudio library for audio output.

Resources

The TZX tape file format specification is available here