Fix Starfox Assault from accessing out of bounds memory. #7409
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This limit was chosen based on the requirement for Metroid Prime 3's GameCube Beta. By setting it to 0x03FFFFFF (48MB) we can still use the modification to REAL_RAM in order to make the beta work. My previous implementation broke the Beta, but this one has a limit that makes more sense while still fixing Star Fox Assault.
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For reference, the old PR was #4303. |
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Also isn't that 64MB, not 48MB? |
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We should probably leave a few comments in the source on where those numbers came from; it took us a while even back in the old PR to figure out what this was supposed to be doing and why the masks were what they were. |
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I'd be fine with leaving more comments if I knew what comments I should be leaving. |
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Should I close this or is there anything to add? |
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This limit was chosen based on the requirement for Metroid Prime 3's
GameCube Beta. By setting it to 0x03FFFFFF (64MB) we can still use the
modification to REAL_RAM in order to make the beta work. My previous
implementation broke the beta, but this one has a limit that makes more
sense while still fixing Star Fox Assault.
For what it's worth, the minimum the Metroid Prime 3 beta wants is 48MB. I don't think we can mask at 0x02FFFFFFF though based on the reaction to me suggesting that on IRC>