CompuServe Messages

I am speaking of an interface which takes RGB output, either from the monitor port or from a card slot, and encodes it as an NTSC compatible color-composite waveform, which takes R,G,B, converts them to X,Y,Z, subtracts Y from each R and B, encodes I and Q, and phase/amplitude modulates a 3.58 mhz color carrier with them. In short, a device which enables you to record full color Amiga video on your VCR or just display it on your TV (with a modulator) there are currently such devices available, and the Amiga 1000 has one, which everyone who wanted to use the Ami for pro video hated passionately( including the MAX HEADROOM crew, according to a write-up in MCS magazine, the issue # of which I can provide if anyone wants it.). The 500 and the 2000 have such a device inside, it is true, but not one which produces color ouput. Only monochrome. The device that I am considering making available to the home experimenter looks like it would cost about $35.00 all told, and would produce acceptable, although not super-duper quality color video. The question, I suppose is "Is there already a set of easy plans for such a thing, such that I would by wasting my effort and everybody's time, and such that I could skip the whole mess and build it?" ???? I intend to get quite serious in video production, and I am looking for a device to provide useable draft video (as in rough draft) until I can get the quality setup put together on my meager budget. For any other electrical engineering tyoes out there, I have been looking at th LM1889 video modulator chip. It is designed to provide a comlete television modulated signal at a low price, but I am not sure I care to get involved with 60 mhz designs when I am after simplicity after all. Has anyone had an experience of this device? I will pose the same question in CHIPS on BIX. Alan