(likely what you meant by "1283") is a legacy version of Avid's digital audio workstation. Writing a paper that focuses on "downloading" this specific version for Mac could promote piracy or the use of unsupported, potentially unstable software. Avid officially supports only current or recent versions, and downloading older versions from unofficial sources is unsafe and often illegal.
Released in late 2017, version 12.8.3 was the final major bridge for users of older Mac hardware. macOS High Sierra Support pro tools 1283 download mac top
: Minimum 15GB of free disk space for the installation. Pro Tools 12
: Minimum 16GB (32GB or more recommended for large sessions). Disk Space : At least 15GB for the installation itself. Download the macOS DMG file (around 2–3GB)
Elias held his breath. He hovered over the icon. He clicked.