Relative position of extra copies for RESP strobe trick

[Kylearan]

Hi,

 

I know that if you set NUSIZ to e.g. "three copies close" and hit RESP at the right moments after the main copy has been displayed, you can get extra player copies displayed. (Correct?)

 

Are the positions of the extra copies relative to the position of the main copy, or relative to the time of the RESP strobes? I.e., if I position the main copy 1 or 2 pixels left or right via HMOVE, will the extra copies be shifted as well, or will they appear in the same place as before because the RESP strobes happen at the same cycles?

 

I have to admit then when googling for this, I got confused by all the hardware details regarding timers, start signals etc...

 

Thanks!

[Thomas Jentzsch]

When do you do the HMOVE? After the RESP strobe and before displaying the extra copy? Then it has an impact on position. Else not.

[Kylearan]

Ah sorry, I should have been clearer. What I meant was:

 

Assume I have a working routine which uses the RESP trick to display extra copies. Now I modify that routine so that the main copy is positioned slightly different, let's say 1 pixel to the left. That means only the HMP value to position the main copy is different, but the RESP strobes happen at the same cycles as before. Will the extra copies be displayed 1 pixel to the left as well, because the position of the extra copies depends on the position of the main copy? Or will the extra copies stay where they were in the unmodified routine, because their position depends on the timing of the RESP strobes (which haven't changed)?

[Thomas Jentzsch]

Or will the extra copies stay where they were in the unmodified routine, because their position depends on the timing of the RESP strobes (which haven't changed)?

This.

[Kylearan]

Thank you! I suspected as much, and this spares me the work of having to fiddle around with the RESP trick myself to test it.