Trouballs [CGB] fail to start if CGB BIOS isn't in use

[GerbilSoft]

Trouballs: Shows "This game can only be played on Game Boy Color".

• MD5: 1b5e155ac68d2c7b89e49c5e1024b45c

[endrift]

One bug per issue please.

[GerbilSoft]

Split it into two issues. It might be the same root cause, though.

[endrift]

While true, if it's not then it would be difficult to "half-close" the issue. Dupes are preferable.