: The "1320" in the filename often points to a specific revision or part number associated with Sun components, such as the Sun 390-0320 series.
While the exact file name can vary between personal hobbyist archives, it generally refers to the firmware for Sun-3 series computers, which were Motorola 68020-based systems popular in the mid-to-late 1980s. What is typically in this archive? Sun3-1320.7z
The Sun-3 was a critical step in workstation history, bridging the earlier Sun-2 series and the later SPARC-based Sun-4 systems. : The "1320" in the filename often points
: Detailed technical data can be found in the Sun-3 Architecture Manual . Sun3-1320.7z