Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!gatech!bloom-beacon!husc6!mit-eddie!ll-xn!ames!ptsfa!ihnp4!homxb!mhuxt!mhuxm!mhuxo!ulysses!allegra!alice!sgt From: sgt@alice.UUCP Newsgroups: comp.sys.amiga Subject: Re: RGBI Monitor Message-ID: <7121@alice.UUCP> Date: Wed, 22-Jul-87 23:52:20 EDT Article-I.D.: alice.7121 Posted: Wed Jul 22 23:52:20 1987 Date-Received: Sat, 25-Jul-87 12:54:36 EDT References: <614@madvax.UUCP> Reply-To: sgt@alice.UUCP (Steve Tell) Organization: AT&T Bell Laboratories, Murray Hill, NJ Lines: 36 Keywords: C128 RGBI Summary: qualified yes, best results need hardware hacking; other questions In article <614@madvax.UUCP> richc@madvax.UUCP writes: # I have a friend with a commodore 1903 color monitor (the kind tha #was made for the commodore 128). It is RGBI. Do you know whether or not #it would work with an Amiga? .... There are two ways to do this. 1) The easy way, with less than perfect results The amiga has RGBI (ttl digital) outputs along with the other more commonly used signals on its 23-pin video connector. With the appropriate cable, this would work with your friends monitor. HOWEVER. He would be restricted to the same 16 colors as the c128 must have been, or as a ibmpc was. I don't know how these outputs are derived from the amiga's analog RGB signals. Can anyone enlighten us? Does the hardware try to do the best it can to approximate the colors specified in the lookup table? 2) the hard way, which requires hacking your monitor. Modify the monitor for analog rgb input. This requires that you know what you're doing, and can replace the digital input section with a linear, analog one. Anyone trying this had better know how to find out if the monitor has a 'hot' chassis, and design the appropriate isolation circuitry to avoid frying your amiga. Another question: My commodore 1080 (standard amiga) monitor has a switch for digital input (RGBI) can someone tell me how to make a cable to use this monitor as a pee-cee monitor? I hate going back to pc's after my Amiga, but color instead of green would make it a bit more pleasant. #Rich Commins Steve Tell -- Steve Tell, Student: Duke University Summer Employee: AT&T Bell Laboratories, Murray Hill, NJ Neither of these want anything to do with my opinions.