> You have to position the object by hitting RESPxx and then you apply the
> fine movement in the HMxx register by accessing HMOVE at the beginning
> of the next scanline. When you store the value to the HMxx registers
> doesn't matter much, because HMOVE will shift all five objects at
> the same time according to the values in the five HMxx registers.
okay, now do i have to use HMOVE for every scan line, or can i just activate
it
once per frame?
> The thing about objects not showing up in scanlines where RESxx for that
> object is accessed is a bit more complicated, but as long as you are
> still learning the basics, it is OK to assume, that the object will
> start displaying in the following scanline.
id rather not assume, but i guess i should just play with it a bit
> BTW objects don't get positioned at the pixel that corresponds
> with the processor cycle when the access to RESxx happens.
> The missiles and the ball have a 4 pixel offset to the right,
> normal players have a 5 pixel offset and double/quadruple
> players seem to have a 6 pixel offset.
hmmmm...this is getting complicated...so balls and missiles display four
pixels to the
right of the cycle where the reset occurs, while players display five/six
pixels to the
right of it? <sigh> that sorta gives programmers a headache, doesnt it? :)
dee
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