Document the save file format

[kemenaran]

At 01:5DE6 sees to be the code for saving the game data to the battery-powered save area.

The format of the saved data has been reverse-engineered, but it is not documented in the disassembly yet.

Resources

• @Xkeeper0 reverse-engineered save format: https://xkeeper.net/hacking/linksawakening/savedata.php

[daid]

Note, the save file is just a copy of a the memory at db00, up to a certain range, and then a few extra bits for the DX additions. Should have a pull request soon where I document the code a bit more.