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Timing is everything..
Posted on September 12th, 2009 2 commentsActually, that’s only half the story..
Been a while since I posted so I figured I’d give y’all a bit of an update. While I’m still waiting for my PCB’s and SMT parts I’ve been beavering away on an NTSC composite color core. I’ve got some color-bars showing up but still need to find the proper voltage levels, which seems to throw off some of the colors ( like yellow ). Maybe it’s because I’m using 5% tolerance resistors.. Meh, we’ll see… Ordered some 1% just in case though..
Anyway, if/when I get it to work it should be able to display 512 colors on-screen ( 3:3:3 ) which isn’t all that great, but if it was enough for Sega, it’s enough for me
The nice thing though, is that all the encoding is done in software and saves you a chip! With my new goal being to create an NTSC game console on a single XS1-L, this should bring that one step closer to reality…
w00t!
2 responses to “Timing is everything..”

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Thats great news on getting a prototype NTSC driver working especially without a external video encoder chip.
Speaking of XS1-L, have you see the new Xmos XK-1 eval board?
Letsmakerobots.com has the story.Its not on the Xmos website yet but I hope it gets listed soon.
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TonyD September 14th, 2009 at 02:13