Overscan options on composite out - Raspberry Pi Forums

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given recent demise of ceefax, , switching off of last analogue public broadcasting transmitter in uk, i'm feeling nostalgic , want recreate in it's former glory.

teletext transmitted using non-visible lines in video signal (does not have tuner, it's encoded video signal). having read through standards, thought generating video signal kind of 8-bit micro. however, micros don't have enough memory , quick enough clock spit out teletext data colour video signal. done, i'm sure, seems rather lot of effort..

happened upon this: http://al.robotfuzz.com/generating-tele ... -software/

occurred me, on rpi quite - didn't know if there obvious way of setting video mode such can render onto overscanned lines. also, it'd mean render other stuff normal video signal

thoughts?

interesting, i'd see if work.


raspberrypi



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