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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
# RX4E4Z - 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:800D2E64 lis r7, game_dvd_read_callback@ha
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# .text:800D2E68 stw r0, 0(r17) # write 0x12345678 to the end of the buffer
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# .text:800D2E6C mr r5, read_length # length
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# .text:800D2E70 mr r6, read_offset # offset
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# .text:800D2E74 addi r3, this, file.file_info # file_info
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# .text:800D2E78 subi r4, r4, dvd_read_buf@l # addr
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# .text:800D2E7C addi r7, r7, game_dvd_read_callback@l # callback
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# .text:800D2E80 li r8, 2 # unknown
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# .text:800D2E84 bl DVDReadAsync
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#
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$Fix file reads (dcache bypass)
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0x800d2e68:dword:0x60000000
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[OnFrame_Enabled]
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$Fix file reads (dcache bypass)
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