Subject: VSYNC problems (was: [stella] Thomas Jentzsch's PAL -> NTSC Conversions) From: Thomas Jentzsch <tjentzsch@xxxxxx> Date: Sat, 9 Feb 2002 09:42:00 +0100 |
At 09.02.2002, 00:29, Roger Williams wrote: >> Gas Hog is setting up a timer and keeps polling it constandly. >> Indy 500 also does that, and I had problems with this game >> too > This absolutely will not work with video hardware that times > from the end of VSYNC instead of the beginning. There will > be variations in the timing which are not acceptable. The point > of writing to WSYNC is that the end of the pulse is timed > exactly to within one cycle. When you set up a loop you > get at least a 15-cycle, and sometimes more, variation in > the length of the pulse. I understand, but Gas Hog does an WSYNC before turning of VSYNC too (see my previous post). So that can't be the reason here. Have fun! Thomas _______________________________________________________ Thomas Jentzsch | *** Every bit is sacred ! *** tjentzsch at web dot de | ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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