Subject: Re: [stella] RSYNC From: Mark De Smet <de-smet@xxxxxxxxxxxxxxx> Date: Sat, 3 Jun 2000 19:44:35 -0500 (CDT) |
> What I don't know, and hopefully someone who may know the video signal > better(Glenn?) could tell us, is if syncronization pulses are actually > sent to the screen everyline. I am unfamiliar with the data format sent > out in composite sync. On the scope, I see the video signal shows up like this: (adventure startup screen) +0.75 _________________ XXX XXX 0 | | | XXXXXXX------- --------- | | | ------- -0.75 < 4us ><4us ><4us >< 37 us >< 5 us > < ~64 us > Here I what I think these segments are: HBLANK sync? ??? video image, one line ????? color? By timing, this repeats about 15625 times a second, probably actually 15720. the horizontal scan rate; so this should be 1 line of signal. Unfortunitely I don't have nice enough of a scope to see what is going on during vertical vsync though. Could Glenn, (or someone else) give us a lesson in what the parts of this signal are, and which parts the TV is actually responding to? BTW, a television image shows up like this: +0.75 _________________ XXXXXXXXXXXXXXXXXXXXX 0 |XXXXXXXXXXXXXXXXXXX| | XXXXXXX-------XXXXXXXXXXXXXXXXXXX--------- | | | ------- -0.75 Mark -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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