small update on tautology II : although games works when cache is off, I
found that the bug is not directly related to the instruction cache
(which is good news), but to some undocumented prefetching in 68020/30
branch instructions that will fill 1 or 2 long words too much at the
moment in the instruction cache (which is not good news).
This would not cause a problem in normal case, except the music player
is using self modified code *without clearing* the instruction cache
(this is bad ...), and in that specific case, this will trigger the rest
of the problems in Tautology II.
I discussed this with Tony, some changes were made to fix part of this,
but more tests are still needed to ensure this doesn't break other
prefetching part.
Hopefully, this can be fixed when I'm back from holidays.