[atari7800] Re: Some questions..

I have my CC2 (way cool, thanks Chad), but haven't found the time to start
using it for development.

I'm fairly certain that there is nothing you can do to effect the DLL
pointer during the frame.  The DPPL/H registers get latched at the begining
of the frame to an internal working register.

However, there is nothing that prevents you from having multiple DLLs in
RAM, or creating one on the fly.

As Dan said, typically each DLL handles 8 or 16 scanlines, using the same
display list for each.  This minimizes the number of display lists requied
(and thus the amount of RAM and the number of updates required to move the
sprites around).

From a demo I did last year - "The following is a rough guide: 2 cycles /
RAM byte, 3 cycles / ROM byte, approx 400 cycles available per line."

And if you exceed the number of cycles available, the 7800 just starts on
the next line.

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