I've been recently playing Donald Duck Going Quakers, also known as Quack Attack, on our old-time PAL Dreamcast, using a VGA->HDMI cable.
My son loves Disney characters, and especially Donald, so it was a great hit.
Unfortunately, something strange happened : over time, as I was progressing through the level, the camera drifted further away from the action, and the main character, Donald, ends up standing more and more at the top of the screen. After some time, way before reaching the end of level 1, Donald is so much at the top of the screen that it's impossible to see what's in front of him. Eventually, he even manages to get out of the screen, at which point the game remains stuck.
That's weird. It's no simple immediate crash / bug, but a slow camera drift over time.
And another weird thing : when I use the same disc image on a PC emulator, such as ReDream, this effect doesn't happen !
The game remains fully playable throughout the levels.
The drifting camera only happens on the _real_ Dreamcast.
That's really reverse from expectation : I would expect the emulation to be glitchy, while actual hardware should work fine.
Anyone having experimented something equivalent ? Any idea ?