Sorry for double-posting, but there's a 7 attachements limit, as you may know. It seems that I've forgotten to post compatibility of Japanese DS Download Demos. Here it is now:
*Trauma Center: Under the Knife - graphics perfect, stucks on screen before operation.
*Ganbare Goemon demo - menu top screen missing background, ingame missing 2D backdrop.
*Guru Guru nagetto demo - first screen of intro (touch to start) perfect, then lots of "invalid gx command" error messages.
*Famicom wars demo - lots of graphics errors: flashing ingame sprites, messed up main menu.
*Jump Super Stars demo - in main menu bottom screen is black, ingame some transparent sprites and message boxes.
Finally, the end of download demos compatibility testing. I might try testing those demos on real hardware and compare them to emulated ones, if I get my hands on some Wi-Fi hardware .