[544] ProDOS 2.5 Alpha 8, , https://prodos8.com/releases/prodos-25/
Year has been expanded from 7-bits (127 years) to 10-bits (1,024 years) to allow date support until the year 2924. There is still a year 2040 problem where the 24-bit timer on the Apple IIgs will wrap around to 1900.
year = 0-4095
- The Legacy data format uses 4 bytes (32-bits) to store the date and time.
- The Extended data format uses 4 bytes (32-bits) to store the date and time for directory listings.
- The Extended data format uses 6 bytes (48-bits) to store the date and time for global entries.
milliseconds*4
milliseconds = 0-249
month = 2-13
month +1 keeps top 3 bits from being 0,
differentiating it from pre-2.5 format