Subject: Re: [stella] does the processor stop during VSYNC? From: Eckhard Stolberg <Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx> Date: Thu, 09 Apr 1998 18:23:15 +0200 |
At 13:36 08.04.98 -0400, you wrote: >Yeap, Stella 0.7 doesn't care about the number of scan lines in a frame. >I'd like to change this in the next release of Stella, however, I >need some information. What is the minimum and maximum number of >scanlines for NTSC and PAL systems? And what happens when the number >of scanlines is outside these bounds (does the screen roll)? There are no definite minimum and maximum numbers. It depends on your TV with how many scanlines it still can sync. If you do a sync signal before the the TV is ready again, it will just go on displaying. If you do to many lines, the TV will force a sync signal on it's own and return to the top of the screen. You also asked about additional features for Stella. How about PAL support including the infamous loss of colour in frames with odd numbers of lines. Or at least a scanline counter in the debugger, so that one could see if he is doing the right number of lines. A interface that lets you specify the things like cart or controler type without having to restart the whole emulator would be nice. And you could fix the inacuracies with the Supercharger writing, the Cosmic Ark stars and the RESPx multiple sprites trick. :-) Ciao, Eckhard Stolberg -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/stella.html Don't post pirate BINs to Stellalist. Be a programmer, not a pirate. Write the best game, win framed autographs of famous Atari alumni!!
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