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BGSCREEN stuff

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MZ952Created:
MZ952#1
XSCREEN 3
DISPLAY 1
BGPAGE 1
BGSCREEN 0,20,15,16
BGSCREEN 1,20,15,16
BGSCREEN 2,1,1,8
> Out of range in 0:8(BGSCREEN:1) So, I'm a bit confused here. The first two BGSCREENs create two BG layers 320x240 pixel units in size, leaving a significant portion of BGPAGE's 512x512 area untapped, which I intended to tap with a third BG layer, or the third BGSCREEN instruction, but no matter what width/height/character size I put in for it, it throws me an error. Ultimately, I think I'm lacking some knowledge about how the BG page/screen/layer stuff works. What's going on here? Edit: seems to be a problem with the layer parameter of BGSCREEN. Is this the sort of thing where both the top and bottom screens have x amount of layers assigned to them, like how both screens have y amount of sprite capacity?
12Me21#2
By default, XSCREEN gives half of the BG layers and sprites (2 BG, 256 sprites) to each display.
MZ952#3
Ah, okay. Is there any way to change that, or am I shit out of luck? ohhhhhh. thanks