Thank you!! "aspect = true" solves my problem! 😀

I tried several old DOS games with dosbox on WinXP SP2, e.g. "Prince of Persia 2". For all it is the same: The sound emulation is great, the game is fully playable. :happy: But the full screen resolution is slightly wrong: Although it should be 640 x 480 (4:3), it appears in a 16:9-close format, so …