Basic Questions and Answers Thread

Discussion in 'Discussion & Q&A' started by Malevolence, Jul 7, 2009.

  1. Giovanni

    Giovanni Well-Known Member Member

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    Out of curiosity, what makes Labyrinth Zone Act 3 loop vertically? I plan on doing something with this information.
     
  2. Iso Kilo

    Iso Kilo Is it a fox? Is it a wolf? It's Kilo! Member

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    I made a guide that answers your question! The TL;DR is that the level's top boundary in most levels are set to $0000, but levels that wrap vertically are set to $FF00
     
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  3. nineko

    nineko I am the Holy Cat Member

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    edit: I'm stupid, please trash.
     
  4. Giovanni

    Giovanni Well-Known Member Member

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    I can't locate where in Sonic 1's code it is determined that a level should vertically wrap at the Y position of $7FF. Anyone care to point me to the right direction?
     
  5. Iso Kilo

    Iso Kilo Is it a fox? Is it a wolf? It's Kilo! Member

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    From what I can tell, it's just an inherent aspect of the way the game handles boundaries. Seeing as the boundary is set to a negative number, the game just goes ahead and wraps back.
     
  6. RandomName

    RandomName Newcomer Member

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    In Sonic 1 label loc_66CC handles wrapping over top of the screen and label loc_6700 handles wrapping under bottom of the screen
     
  7. Mike B Berry

    Mike B Berry A grandiose return Member

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    Okay so this is probably a weird question as I have no knowledge of this stuff, or at least, I forget the specific details.

    Long story short. I found an old box of 3 1/2 inch floppy disks. And one of them has a lable featuring my first ever rom hack. As you know, the medium is rather obsolete for the most part, considering I used to mod S2 on a Season 2 windows 98 PC with an aftermarket diskette writer. As in, it was taken from a Windows XP with custom parts on it as a gut project. My issue these days is the actual lack of driver support. I know I could buy one of those usb floppy readers. Just not sure what I am exactly after.

    Edit* I had a download link up on Retro about this years ago, about a month before I even considered joining SSRG, but the link has since expired and nobody has it lying around. Thinking it might be worth trying to preserve it if the data hasn't succumbed to disk rot or demagnetization. Regardless of how crap the rom hack actually is, I feel it's an important thing to note.

    Further note to the edit* I didn't ask a question. How would I go about this?
     
    Last edited: Jan 17, 2021 at 4:44 PM