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Article #2089Re: 520ST video outputs
From: info-atari
Date: Thu, 16 Jan 1986 20:10
Date: Thu, 16 Jan 1986 20:10
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1589 bytes
Presumably the "analog RGB" output is synced at 60 Hz, else very few RGB monitors would work right on it. Or is there a way to select (there must be) a 60-Hz output? If so, then it wouldn't be too hard to whip up a composite video signal from the RGB, or even a 60-Hz monochrome one. On the other hand, a 60-Hz composite signal must exist at the video modulator input, so it could also be sneaked off from there. Then at most a low-pass filter would be needed to feed a 60-Hz monochrome monitor, and in fact the composite signal could probably be used, as it was designed to be more or less compatible. Does anybody know whether the whole thing shifts gears to 60 Hz when you plug into the RF modulator jack? Or can you simultaneously run RF at 60 Hz and monochrome at 70 Hz? This may be the key to why you can't run both monochrome and color monitors at the same time -- if in fact you can't. -John Sangster jhs at mitre-bedford.arpa
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!ucbvax!info-atari From: info-atari@ucbvax.UUCP Newsgroups: net.micro.atari Subject: Re: 520ST video outputs Message-ID: <8601162010.AA07460@mitre-bedford.ARPA> Date: Thu, 16-Jan-86 15:10:53 EST Article-I.D.: mitre-be.8601162010.AA07460 Posted: Thu Jan 16 15:10:53 1986 Date-Received: Sat, 18-Jan-86 00:46:11 EST References: <350@ihnet.UUCP> Sender: daemon@ucbvax.BERKELEY.EDU Organization: The MITRE Corp., Bedford, MA Lines: 16