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36ecfdd6b5
This enables patches for game-breaking problems by default. My criterion for which patches to select was that the patch has to make the game's behavior closer to how the game acts on console. So workarounds for Dolphin not emulating caches accurately are enabled by default, but not things like Twilight Princess's minimap speedhack or patches for disabling memory card checks in Pokémon games.
28 lines
1.3 KiB
INI
28 lines
1.3 KiB
INI
# RX4PMT - Casper's Scare School: Spooky Sports Day
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[OnFrame]
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# Work around a dcache issue by preventing the game from doing something pointless.
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#
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# The game's DVD read function writes 0x87654321 to the entire read buffer and 0x12345678 to the
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# last 4 bytes. It then calls DVDReadAsync() and without waiting for the read to complete at all,
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# it checks if the last 4 bytes are still 0x12345678. If they are, then the game fails.
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#
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# The check always passes on console because DVDReadAsync() -> issueCommand() calls
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# DCInvalidateRange() (dcbi) on the read buffer.
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#
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# Dolphin cannot emulate this without an extremely significant performance hit.
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#
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# .text:80164B8C lis r7, game_dvd_read_callback@ha
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# .text:80164B90 stw r0, 0(r17) # write 0x12345678 to the end of the buffer
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# .text:80164B94 mr r5, read_length # length
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# .text:80164B98 mr r6, read_offset # offset
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# .text:80164B9C addi r3, this, file.file_info # file_info
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# .text:80164BA0 subi r4, r4, dvd_read_buf@l # addr
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# .text:80164BA4 addi r7, r7, game_dvd_read_callback@l # callback
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# .text:80164BA8 li r8, 2 # unknown
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# .text:80164BAC bl DVDReadAsync
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#
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$Fix file reads (dcache bypass)
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0x80164b90:dword:0x60000000
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[OnFrame_Enabled]
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$Fix file reads (dcache bypass)
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