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RE[78]: MemTest64


@LGB: So when I set that bit, it screws up the system immediately. My above mentioned sequence for the switchover is right exactly there, a few bytes earlier (at $1598-$15aa). I take it out of the final version then.

The $0215b0 address gives some clue about what's going on: a ROM gets paged in place of RAM (unless it should be $0015b0 I guess).

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