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apply upstream patch to fix Test Chamber homebrew#88

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apply upstream patch to fix Test Chamber homebrew#88
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@hunterk

@hunterk hunterk commented Jul 8, 2026

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from this forum thread: https://forum.fobby.net/index.php?t=msg&th=2180&start=0&

Mednafen follows the official VB documentation, but there's apparently undocumented behavior that allows reg2 to use the full 32 bits instead of being treated as a halfword.

Note: I haven't compiled this yet, as I'm away from my dev machine, but I'll test it ASAP and follow up. I'm just putting this PR up now so I don't forget about it later.

EDIT: just tested it and it compiles just fine and Test Chamber appears to be working properly.

Closes #87

from this forum thread: https://forum.fobby.net/index.php?t=msg&th=2180&start=0&

Mednafen follows the official VB documentation, but there's apparently undocumented behavior that allows reg2 to use the full 32 bits instead of being treated as a halfword.
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test chamber not working properly

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