To emulate this game you should run only the modified ROM Donald in Maui Mallard (E) [f1]. It's just one that has the necessary 60 fps (compatible with PC monitor frame rate). The other European ROMs (E) contain 50 fps (25 fps for PAL/SECAM) as usual that's why the total animation will be displayed too slow in the monitor. The American ROM with 60 fps (30 fps for NTSC) doesn't exist because the Sega original game was never released in the USA. Reference to that ROM is in the video's description
To emulate this game you should run only the modified ROM Donald in Maui Mallard (E) [f1]. It's just one that has the necessary 60 fps (compatible with PC monitor frame rate). The other European ROMs (E) contain 50 fps (25 fps for PAL/SECAM) as usual that's why the total animation will be displayed too slow in the monitor. The American ROM with 60 fps (30 fps for NTSC) doesn't exist because the Sega original game was never released in the USA. Reference to that ROM is in the video's description