Updated Difficult to Emulate Games (markdown)

Connor McLaughlin 2021-01-05 02:31:20 +10:00
parent 79b5360cf0
commit 46d7177e10
1 changed files with 94 additions and 0 deletions

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