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jotd · 28 January 2022, 08:35

ah makes sense. With dual playfield I don't need that

thanks Dan. I wanted to make sure that I wasn't missing anything. So you're saying that scrolling games have a narrower display than non-scrolling games.

So that will be sorted for the left side. For the right side, that will be slightly trickier. I can't use sprites because the starfield already uses sprites and that's low priority (else a big black - possibly multiplexed - sprite bar could probably have done the trick).

I can use an extra black color on playfield 1 just to mask playfield 2. That's a waste of 1 color out of 8, but I can probably take it.

Another option would be to blit a black bar in playfield 2, with a bit shift so it makes up the scrolling shift. Probably the saner option (Supercars 2 does that for the central area in 2 player mode)

28 January 2022, 08:35	#5
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,162	ah makes sense. With dual playfield I don't need that thanks Dan. I wanted to make sure that I wasn't missing anything. So you're saying that scrolling games have a narrower display than non-scrolling games. So that will be sorted for the left side. For the right side, that will be slightly trickier. I can't use sprites because the starfield already uses sprites and that's low priority (else a big black - possibly multiplexed - sprite bar could probably have done the trick). I can use an extra black color on playfield 1 just to mask playfield 2. That's a waste of 1 color out of 8, but I can probably take it. Another option would be to blit a black bar in playfield 2, with a bit shift so it makes up the scrolling shift. Probably the saner option (Supercars 2 does that for the central area in 2 player mode)