BS Zelda The Third Quest

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BS Zelda The Third Quest

Post by pevkoss on Sun 17 Sep 2017 - 21:37

I have been stuck with this game trying to find out exactly where the audio changes when entering/leaving a cave,dungeon, etc. The game goes into so many loops, it is difficult to find where exactly the code write to the spc port to start/stop the tracks.
I already figured out how to swap in the pcm tracks for the title and player select screens but cannot go any further. Any clues?
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pevkoss
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Since : 2017-08-24

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Re: BS Zelda The Third Quest

Post by Conn on Mon 18 Sep 2017 - 6:58

You somehow posted it in the database for finished patches, so I moved it...

The code for tracks change is VERY easy in this game:
$C5/BED2 8D 40 21    STA $2140  [$00:2140]   A:0301
Here 01 gets directly into audio port 2140 to play the overworld music, e.g., when leaving a cave or dungeon.

$C5/BED2 8D 40 21    STA $2140  [$00:2140]   A:0380
Here it gets muted when entering a cave with 80

Dungeon is 02 and whatever. You can cheat for the tracks with 002140xx with xx being the track number.

Make a trace with geiger and search for sta $2140 to find the place where to hook.
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Re: BS Zelda The Third Quest

Post by Conn on Wed 4 Oct 2017 - 7:05

Pevkoss and I colaborated via mail and this project is finished as well Very Happy

Third Quest: https://drive.google.com/open?id=0B68bmgtrAXQAZkd3WHNCbGlIeGc
Fourth Quest: https://drive.google.com/open?id=0B68bmgtrAXQAWElRS1lacHU1c3M

As soon Shirju finished a video, I will post it in the database.
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Re: BS Zelda The Third Quest

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