Updated Difficult to Emulate Games (markdown)
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@ -6,16 +6,19 @@
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### Hot Wheels Turbo Racing
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- DMA timing or hangs on startup/ingame
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- Infinite DMA linked list/chains
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***
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### Syphon Filter (series)
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### Tekken 2
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- Infinite DMA linked list/chains
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***
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### Valkyrie Profile
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- Requires DMA timing otherwise battles time out/lock up
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- Loop address from ADPCM blocks must be ignored with the register value taking precedence
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***
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@ -72,6 +75,11 @@
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***
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## Casper
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- Puts SPU IRQs in addresses being read by released/off voices
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***
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### Skullmonkeys
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- Requires GPU coordinate truncation/sign-extension otherwise objects will be missing
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@ -82,6 +90,11 @@
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***
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## Formula 1
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- Spams invalid MDEC commands, need to be ignored/parameters skipped
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***
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### Spyro 2 PAL
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### Spyro 3 PAL
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- Libcrypt protection is really nasty - the cop0 instructions to grab are xor-obfuscated, and written immediately before execution
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@ -89,6 +102,18 @@
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***
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### Final Fantasy VIII
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- Uses an undocumented method for swapping the dualshock motors, intensity will be zero if not emulated correctly
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- Has some scenes which rely on coordinate truncation/sign extension per-scanline
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***
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### Final Fantasy IX
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- Seems to use VRAM as a swap area during transitions
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- VRAM writes and readbacks must be bit-accurate, otherwise at best you get broken animations, at worst crashes
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***
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### Parasite Eve 2
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### Disney's Treasure Planet
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- Sensitive to MDEC timing
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@ -111,6 +136,32 @@
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***
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### Victory Spike
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### Magical Drop III - Yokubari Tokudai-gou!
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### Yuukyuu no Eden - The Eternal Eden
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### World Cup Golf - Professional Edition
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- Expects other DMA channels to run while an infinite linked list chain is running
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###
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***
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### Team Buddies
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### The Next Tetris
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- Sensitive to ODE bit (31) in GPU status register
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***
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### Wizard's Hamony
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- Does logical seeks to data sectors, this needs to succeed, but reads of audio sectors should fail for other games
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***
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### Nickelodeon Rugrats - Search for Reptar
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- XA audio in intro has more data than can be played by the SPU, buffers need to be correctly cleared on overflow
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***
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### Jackie Chan Stuntmaster
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- Triggers interrupts by setting cop0 bits in software, can be tricky for recompilers
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@ -132,6 +183,49 @@
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***
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### Zoku Mikagura Shoujo Tanteidan - Kanketsuhen
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- Uses timer gated by hblank but sysclk as clock source, essentially counting ticks outside of hblank
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- Will hang at startup if not emulated correctly
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***
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### WipEout
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- Repeatedly seek commands while seek is in progress, position needs to be updated when the next request comes in
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***
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### Chicken Run
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- Requires deferring setting the reading/playing bit in the CD-ROM until the first sector is read
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***
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### Arc the Lad III
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- Requires error interrupt on shell open for disc change detection
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***
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### Voice Idol Collection - Pool Bar Story
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- Music in transitions will slow down due to timeouts in the CD-ROM code when commands are cancelled
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- I use a heuristic of "cancel only when the new command has fewer parameters than the old command, otherwise clear FIFO and send error"
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***
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### Dancing Stage featuring DREAMS COME TRUE
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- Supplementary disc detection will fail if pregaps are incorrect, or errors are not sent on ReadN
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***
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### Bedlem
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### Rise 2
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- Sensitive to sector buffering/overwrite behavior when missing CD-ROM reads
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***
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### Gameshark Sampler Disc
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- Requires one cycle delay from CD-ROM interrupts
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***
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### Silent Hill
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### Ghost In The Shell
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### TwinBee RPG
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