I found this info just looking around for the ROM of that game:
Q: Argh! The %^&*ing title-screen keeps looping! What do I do?
A: The rom is rather anal about these things. First of all, you need
to set Disk 1 Side A to even get it to load. When you reach the point
where it says "Set Side B", select "Eject" from the menu, and THEN
choose "Disk 1 Side B". It won't bother looking for Side B until it
detects the ejection. Annoying, huh?
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