Reicast-emulator: Review AICA code and create follow up tasks

[skmp]

update

I guess I need to go over this and create actionable tasks to be assigned to milestones

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See comments in https://github.com/reicast/reicast-emulator/pull/1315/files

[luserx0]

Reported as fixed on @flyinghead 's bracnhes
Any info?

[AbandonedCart]

https://github.com/reicast/reicast-emulator/commit/5bdc362da33e10176b2187f58e7c7a01e70bfd49

https://github.com/reicast/reicast-emulator/commit/1e67f9be0b217d14e12e6c6500f2c55e4bf4a63a
https://github.com/reicast/reicast-emulator/commit/1e661a4d459927e99e6b8212715ed409ece5fc41

[AbandonedCart]

This should probably be closed in favor of https://github.com/reicast/reicast-emulator/issues/1414

[skmp]

1414 is only part of what needs to be done. I'll get to this by the end of next week :)

[skmp]

1414 is only part of what needs to be done. I'll asign this to me as it is a meta-task