I don't know if it qualifies as a port, but Hudson Soft's Super Mario Bros. Special for Japanese home computers comes to mind. (It completely lacks scrolling an

I don't know if it qualifies as a port, but Hudson Soft's Super Mario Bros. Special for Japanese home computers comes to mind. (It completely lacks scrolling and takes some liberties with the level design and includes extra power-ups, though.) Also there is of course Super Mario Bros. Deluxe for the Game Boy Color, ported by Nintendo themselves.