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Subject: Re: Z26, VSYNC, Timers, somebody HELP ME! (was: Re: [stella] Gunfight Release Candidate(s)) From: Manuel Polik <cybergoth@xxxxxxxx> Date: Thu, 08 Nov 2001 19:25:20 +0100  | 
Hi Eckhard! >As it seems the timer loop always expires >after cycle 70 or so. One timer step is only >64 cycles, so if you reduce the timer value >by 1, you should always get a stable picture. The thing I realised in the meantime is, that the end cycle where the timer expires can only shift between 5 cycles, right? So I shifted the point where the timer is loaded some cyles (> 5) later, which should have the same effect as reducing the counter, right? >> And why is Z26 not jerking? >Because we are not really sure when the jittering >is supposed to happen and when not. But maybe we >could add a display that constantly shows you the >number of scanlines in the last frame on the screen. >That way you can see for yourself when you are not >generating a stable number of scanlines. I think this'd be a cool & necessary feature, at least for us developers. Greetings, Manuel ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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