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Published 20 hours ago • verified publisher icon emu-russia

Fix GekkoCore lurking bugs

Open ogamespec opened this issue 4 years ago • 3 comments

After adding MMU emulation and cache, some strange bugs appeared. It is necessary to localize and eliminate them.

  • [x] MMU ARAM mapping fails at random address
  • [x] Bust-a-Move does not start due to some cache problems
  • [x] FIFO integrity is violated (it doesn’t apply to GekkoCore, but it appeared after the implementation of GatherBuffer)
  • [x] GCLinux does not want to start (MMU?)
  • [x] Locked Cache bugs
  • [ ] Samurai Jack: dcbi 0xE000'0000 before LCEnable (#DSI)
  • [x] FF:Crystal Chronicles: dcbf 0x8180'0000 (#DSI)
  • [ ] I-Ninja: dcbf 0 (#DSI)
  • [x] IPL DCFI causes to blr 0
  • [ ] IPL __init_data crashes

ogamespec avatar May 01 '20 20:05 ogamespec

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ogamespec avatar May 01 '20 23:05 ogamespec

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ogamespec avatar May 02 '20 12:05 ogamespec

  • DCInvalidate (0xE000'0000);
  • LCEnable
  • Complain on Twitter that when you were a developer, the GameCube had buggy hardware

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ogamespec avatar May 02 '20 12:05 ogamespec

IPL __init_data crashes

Fixed by implementing proper instruction cache.

ogamespec avatar Aug 09 '23 18:08 ogamespec

Closing this Issue, will create others on vm.a library (SDR1 usage) and on random DSI/ISI when booting from a DVD

ogamespec avatar Aug 15 '23 10:08 ogamespec