ok. I managed to find a Dino Trivia screen (god, I always hated this game! ;)). the effect in MESS looks as follows (with pseudo-hires implemented):
![[Linked Image from mamedev.emulab.it]](http://mamedev.emulab.it/etabeta/fast/files/0051.png)
definitely close to the image byuu posted some time ago
![[Linked Image from img35.imageshack.us]](http://img35.imageshack.us/img35/3281/hires.png)
(left: tv/bsnes, right: emu with no pseudo-hires, bottom: emu with pseudo-hires)