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1 user currently in Rom Hacking:  hukka |
| Acmlm's Board - I2 Archive - Rom Hacking - Star Ocean (the SNES one) |
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DukeNukem007 Shyguy Level: 13 Posts: 67/90 EXP: 9247 For next: 1020 Since: 07-08-05 From: Quahog, RI Since last post: 18 days Last activity: 12 hours |
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| Anyone know how to hack the game maps? From what I understand, basically only the graphics (about 2.5 of the 6 megabytes of the game) are compressed with the SDD1 chip, so reverse-engineering that isn't an issue (although I'm surprised there isn't a Lunar Compress/PeerSpriteView type package for it.) I get the feeling that the maps are stored similarly to Tales of Phantasia's, but I'll have to take a closer look... |
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Kyoufu Kawa I'm not bad. I'm just drawn that way. Level: 70  Posts: 2116/2481 EXP: 3008456 For next: 7355 Since: 03-19-04 From: Catgirl Central Since last post: 14 hours Last activity: 13 hours |
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| I have that same feeling, really. Assuming they didn't alter the engine too much, you'd be right to assume so. And yes, it's only the graphics. Same goes for Street Fighter Alpha 2. |
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jman2050 Red Koopa Level: 19 Posts: 112/123 EXP: 33172 For next: 2605 Since: 03-21-04 Since last post: 10 days Last activity: 103 days |
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| I'm actually more interested in stat editing. Star Ocean is in DESPERATE need of a universe mode or something. Far too easy normally. | |||
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DukeNukem007 Shyguy Level: 13 Posts: 68/90 EXP: 9247 For next: 1020 Since: 07-08-05 From: Quahog, RI Since last post: 18 days Last activity: 12 hours |
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Originally posted by Kawa-oneechan SFA2 also has a few background tile formations in the SDD1 banks. The chip really is impressive--it compresses at a level comparable to WinRAR, although from what I've heard on efforts to hack FEOEZ the SPC7110 is even more impressive, working at a 7-Zip level. Both of those levels of compression would run slow as hell straight off a 3.6 or 2.8 mhz SNES. Well, time to hack the ROM and see if I can get stats as well as maps... The 64 banks from $400000h to $600000h seem to include all the sound of the game (roughly 1.1 MB from ripping on SNESSOR)leaving about 0.9 MB for other stuff. Seems to be a lot of 65816 subroutines there...Wouldn't want to carelessly hex-ed either that or the first ~$3a000h of the rom. What's the block of data from $3a000h to $40000ish? Looks like some 16x16 tsa or pointer stuff, but I imported a few savestates from points in the game and got nothing special when I hacked it, nor crashed the rom. The bulk of the game script occurs around $240000h-$290000h (the DeJap team could provide you with much more specifics.) SDD1 data is a lot more scattered than I thought. |
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