Hi Jason,
> When I tried using the horizontal positioning routine to move the sprites in
> accordance with joystick movement, the sprites jump approximately 1/4 of the
> screen width (seemingly) with each frame... I am not certain if this is an
> error in my (badly patched together) code or the natural result of not doing
> the positioning during the kernel. I tried replacing the Battlezone hor-pos
> routine with the Air Sea Battle method and got the same result...
I've seen that too. Are you setting HMPx during the 24 cycles after HMOVE? When I did that I saw my sprites jump. When I move the HMPx set to be 24 cycles after HMOVE they worked fine. Also check the trace log in Z26. If you see a <---weird you might want to check into it. I saw these with my first few tries of Climber.
Take care,
Dennis
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