How to optimize C code for NGPC?

[winteriscoming]

for line interval, check 8Bit.pdf from snk doc, page 16, it gives you the code , put 4 instead of 1 in TREG0

In attempting to change TREG0 to some other interval, I discovered I need it set to 1 for udmadac, which uses timer 0 and timer 2.

At any rate, breaking up into different hblank code for each scenario seems to speed it up in the case where I am splitting plane2.  I am still trying to determine if there is a perceivable difference between doing the plane splitting and not.  I might be at a point where I can't notice the difference when testing on real hardware.