I have only worked on a little bit of rom hacking over the past few years, and never really had the patience, given the difficulty I was having. Lunar Magic, FF3usME, and a couple NES game specific editors. After having so much of a hard time, and not being able to figure them out, I pretty much gave up. I made some progress with FF3usME, but with the sheer amount of editable content in the game, I only made it to Returners Hideout before giving up. With the initial release of FF6AE this past winter I decided to give hacking another shot. In the process of waiting for the next release of that particular editor, I decided to give FF1 a try.
About 2 months ago I started learning how to use FFHackster, and I took the time and patience to learn how to use it. Then I decided that I wanted the INT patch, and tried to use the hex addresses from Astral Espers sticky on Gamefaqs, and to no avail, I couldnt get it to work. Then I had the determination to crack GFF and finally did. Now I have learned how to use a hex editor fairly well, and I have found most of the data for GFF.
I plan on releasing documents similar to FF Bytes (but more detailed), when I am done putting all the hex locations together. Some of it can be edited with Hackster, but most of it has to be manually edited with a hex editor. Even the parts that can be edited with Hackster are nearly impossible to read, because of how the text was expanded.
This has turned out to be a very worthwhile project. We all know that the original Final Fantasy is very broken. Grond, along with a few other hackers fixed all that. Finally, the original game is on par with all the other games in the series.
These documents should be completed by sometime in October. Now, nobody will have to worry about when, or if, the INT patch will be released. This is turning out to be about 90-95% complete in data finding. I still havent completely figured out how to create my own Magic Spells, only edit existing ones. The Battle Editor will require you to use Hackster and use a text document to navigate what you are trying to read. Overall, there shouldnt be any limitations by the time I am done. In some cases it will be even more complete than what Hackster can do. All the "Unknown" checkboxes will be defined, and if I can find the data, I will allow for treasure to be placed anywhere you want.
Quick tip for trying to find the data you want with a hex editor. Press and hold "0" to zero out all the data for about 20-30 seconds. Save and go see if that area of the game was altered.