Path: utzoo!mnetor!uunet!husc6!bloom-beacon!mit-eddie!killer!jolnet!rich From: rich@jolnet.UUCP (Rich Andrews) Newsgroups: comp.sys.atari.st Subject: Re: Computer to VCR? Message-ID: <536@jolnet.UUCP> Date: 5 May 88 06:06:11 GMT References: <880501030428.625908@HIS-PHOENIX-MULTICS.ARPA> <832@nunki.usc.edu> Reply-To: rich@jolnet.UUCP (Rich Andrews) Organization: jolnet, Public Access UNIX, Joliet, IL Lines: 49 Keywords: Genlock, Atari, Antic In article <832@nunki.usc.edu> rjung@castor.usc.edu (Robert Jung) writes: >In article <880501030428.625908@HIS-PHOENIX-MULTICS.ARPA> Friesen%PCO@BCO-MULTICS.ARPA writes: >>This is something I've been waiting for it to come out, and now I see >>Electronic Arts has done it on the Amiga. I think the colloquial term >>is genlock. If anyone knows how long until it comes out on the Atari or >>how much it costs, please tell me, I am very interested. > > Yes, this is called genlock. The idea is to take your ST's signal, >synchronize it with your VCR/TV's signal, and blend the two together. Genlock > > As for getting it NOW, I don't think there is such a beast avaliable. >However, there are rumors that Antic (you know them guys, Spectrum 512, >CAD 3D, all that terrific Atari stuff) is coming out with a genlock >system for the ST. > Neither Antic nor Atari nor anyone else is going to genlock the ST unless Atari engineering reworks the glue chip. There have been several different versions of the GLUE chip around and the very first rev. was able to be genlocked, but that version has not been made in over 2 years. The only way to genlock it now is with a frame synchronizer (read $5,000). It appears that Atari does not plan to make the ST genlockable. Maybe in the "new" machine it will be able to be genlocked "easily". I have spent many an hour hacking 2 ST's to get them to genlock and I DID genlock the oldest one. It was impossible to genlock anything newer (higher rev number on the GLUE chip) than that though. I even bought 2 new glue chips to verify it. The display is impressive if everything is brought into the ST and is timed properly. As I recall the main crystal had to be changed along with the addition of a loose PLL circuit so that the crystal oscillator would be a multiple of Horizontal Sync and then some additional work had to be done to the 3.58 circuit so that you could drive 3.58 into the ST to obtain color lock. There were a few other things that i seem to have forgotten, but they must be trivial. The biggest hassle was to get the "correct" master oscillator crystal cut. I had to call a crystal house and had to have them cut the crystal for me. If anyone needs any additional information, let me know. Rich Andrews Asst. Chief Engineer WCFC-TV -- ------------------------------------------------------------------------------ Any opinions expressed are my own. Now, for a limited time, they can be yours too, for the incredible price of only $19.95. Simply send $19.95 (in Alterian dollars) to ...killer!jolnet!rich. Or call (312) 301-2100 (data) Rich Andrews