The differences between the v0 (KR, BR) and v1 (EU) ROMs include:

  1. v0 only shows the "Barcelona '92" logo on startup, while v1 also shows a "Coca-Cola" logo.
    Logo Screen [v0]Logo Screen [v1]
  2. v0 is missing the small Olympic rings in the background during events such as the hammer throw.
    Stadium Background [v0]Stadium Background [v1]
  3. v1 adds 7 bytes of code at address $02b90, the purpose of which is to play an additional sound effect after displaying the medal table.

It is unknown whether there are any other differences between the ROMs.

Researched by RetroSpark

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