pre-6th gen games that support widescreen?

[aaron]

is there a special way to access the 16:9 mode in these games or do they just default? does region matter?

does anyone have any links to guides on the topic with compatibility lists and such? i'm far, far too busy to google at the moment.

[AppleQueso]

The n64 ones are all just in the options menus.

[Hobie-wan]

R-Types for PS1 does, sorta. There isn't a menu option for it, but the arcade was a wide aspect ratio and stretching it to 16:9 makes it look correct.