All Shu generals:
At the Main Menu, press White, Black, X, Y, White, R, L, Black.

Opening Edit option:
At the Main Menu, press X, Black, Y, White, L, R, White, White.

BGM Test option:
At the Main Menu, press L, White, Y, R, White, Black, X, Y.

Thanks to Revolution readers tim1600hp and Marke!

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