Didn't I just say I need that copy speed... but indeed, the p mode does realise a smooth fullscreen multilayer scrolling wich isn't possible in any B-mode.
But I always running into troubles programming for the gfx9000. In p1 mode, I needed to copy a lot, at least I planned it that way, unaware of the real speed at the time, so I have to trow the hole thing around and well... maby later

. Another test rusulted in disappearing sprites... so that 16 sprites on a row was simply not going to be enough

. Now in b1 I am having some memory issues

But I am still having a lot of fun, and who knows maby I finish something some day