RE: [stella] VBLANK or VSYNC first?

Subject: RE: [stella] VBLANK or VSYNC first?
From: ben <ben@xxxxxxxx>
Date: Sun, 28 Oct 2001 18:36:05 +1100
At 08:08 AM 10/23/1993 -0300, you wrote:
>I´m not sure if I understood what you want to do here, but the only way to
>start a new frame is using vsync, the beam won´t reposition by itself no
>matter how many scanlines have passed. So when VSYNC is turned off you
>should restart the scanline counter, but not the beam counter. Also, I think
>you should activate TIA_vblank while VSYNC is on  ( I would like a
>confirmation on this subject).

1. The docs all show VSYNC as the top of the frame (3 lines) and then 37
lines for VBLANK.  So isnt the scanline counter reset when VSYNC is written
to, not when it is turned off?  Doing it as you suggest would be 3 lines
too late, yes?

2. What is the beam counter actually used for?  Only for reference?  If I
understand it, RSYNC controls this, but RSYNC seems hardly ever used :/



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