[stella] Question about HMOVE at cycle 71

Subject: [stella] Question about HMOVE at cycle 71
From: "Dennis Debro" <dennis@xxxxxxxxxxxxxxx>
Date: Thu, 14 Jul 2005 08:45:35 -0400
Hi there,

I'm hitting HMOVE at cycle 71 (ending at cycle 74) to avoid the HMOVE
lines. When I do this I noticed my players are "halfed". I hit HMOVE the
scan line half way between drawing the sprite.

I looked at the trace log from Z26 to try to figure out what was going on.
When I position my sprites and hit HMOVE they're positioned at 69 and 82
respectively. When I hit HMOVE again (no positioning this time) they shift
to 61 and 74. I do a HMCLR 2 scan lines after the HMOVE was done so why
are the sprites changing positions?

When I do HMOVE like it was intended at cycle 0 then I don't get this
behavior. Is there something I'm missing here? Maybe I'm missing something
when I read the HMOVE timing chart.

Take care,

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