Alttp Bible (currently in alpha/beta form, but still very useful)
that has all the current known info on hacking this game:
A product of Zeldix forum and its "masterminds"http://dl.dropbox.com/s/siqee8nwehhhqd0/Zelda3%20Compendium%20v1.8.4.pdf?dl=0
I'd like to place a few extra chests in Link's house or somewhere nearby so I could start the game with: Pegasus Boots, the Cane of Somaria and the Magic Cape.
Anyway, I'm assuming that this could be done with Hyrule Magic but I can't seem to figure out how to alter the contents of the chests. Pegasus Boots, the Cane of Somaria and the Magic Cape.
Yes, it can be done with Hyrule Magic. The easiest was for you to do that, is to open Alttp in HM and open up indoors and remove some chests in a random cave, which has 4 chests with 20 rupees. Now you can add 4 chests in your house. Then click on them and press the + on the keyboard to change the content of the chest.
Note: it is difficult to expand the number of chests, but it was already decoded over at Zeldix. We found the way how to expand any indoors data: chests, items (=stuff under jars), sprites, bg data etc, number of pushable blocks etc. But it is not recomended to change this, since the rom is then no longer compatible with HM. So it is better to remove some chests first and add them on new locations.
Alternative: you can hack the srm starting save, so that Link already starts with these items by default. I/We also decoded this already for all possible inventory items. No new chests are needed then.
Assuming the file has NO-header,
go to 274D8 in hex and change the 00 to 01, = start with the Cape by default,
go to 274D6 in hex and change 00 to 01, = start with Cane of Somaria by default,
go to 274DB in hex and change 00 to 01, = Pegasus boots in inventory (no running yet)
go to 274FF in hex and change F8 to FE, = turn on running with Pegasus boots
you can play some more:
go to 274F4 = green magic start, 00= zero, 10=one eigth, 40= half, 80=full
go to 274F2 = heart containers: 18 18 is 3 hearts, 20 20 is 4 hearts, 28 28 is 5 hearts etc
Actually, if it's possible to make a few simple hex edits and have the Pegasus Boots appear in the chest that already exists in Link's house I would find this equally acceptable but I don't know where to find the info for this stuff. As popular as this game is I'm assuming that someone has already located this type of data.
Yes we have located this data and lots more of it. Smart choise to change the Lamp in your house to Pegasus boots, since the Lamp will than be in the cellar where the Uncle is at(automatically, since this is a special chest= Lamp, alternate is 5 rupees).
This is a simple edit with HM, click on the chest and hold + until the Lamp is changed into Boots. You can make a copy of the rom first and then hex compare the 2 files, if you wish to know where this is in hex, but there is no need.
Mandatory reading: The guide for Hyrule Magic has all this info already in it.
Guide for Hyrule Magichttp://www.romhacking.net/documents/314/
Hyrule Magic Programhttp://www.romhacking.net/utilities/200/
Recomended to visithttp://www.zeldix.net/