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ProDOS 2.4 update released for Apple II computers
https://vetusware.org/index.phpmv/msg/935/2080/#msg_2080
Today, the 30-year anniversary of the Apple IIGS, a new version of the ProDOS operating system has been released.
ProDOS 2.4 adds new features for all Apple II computers, including the 1977 Integer ROM Apple II.