SCI debug modes

Shish Are there any debug modes in
SCI vga (320 x 200, 256), non
640x480 like SQ 6 or LSL 7.
I know only one in PQ3 are there
any others???
AGI1122 http://www.mega-tokyo.com/forum/index.php?board=5;action=display;threadid=1491

This explains how to access certain debug modes in certain SCI VGA games.