SpritesMind.Net

This is the border in country/europe mode

At what time does kega fusion get the border color? I set it to black most of the time accept for a small window in the middle of the screen.

In real hardware you can see that the border is black: http://www.youtube.com/watch?v=D99Suyjdd9Y

(that's pal on my ntsc televsion)

Fusion makes the border colorful so it's getting the border color from somewhere in the middle of the screen or something. How do i get fusion's border to be black?

Make it black before VBL and it would stay so.

Fusion does properly support mid-frame backdrop changes, but only on a scanline-granular level (which can cause a one-line delay for backdrop changes unless they're done at hblank).