On Thu, May 3, 2018 at 10:39 AM, Bill Degnan <billdegnan@gmail.com> wrote: > I made of post that details how I can switch between display modes on my > C128D and 1084 display. This may help shed light on what you'd need to do > to get a color signal on an LCD display. In particular it's required that > the 1084 be in the LCA setting to display color. If you determine the > difference how the 1084 processes in inbound signal from the C128 you'll > learn what you need to do to make it work on the LCD, which I am guessing > is in "CVBS mode" relative to the 1084. > > http://vintagecomputer.net/browse_thread.cfm?id=719 > > If that helps, I will post the info on my site for future Commodorians > > I did this to help confirm my theory that the issue is not with the C128 > nor the cabling. It's the LCD. > Interesting. I'll try the C128 with my other LCD that has s-video, which is my Dell 2405fpw. That's what I likely used, last time that I had the DCR hooked up to a modern monitor. And, of course, I'll dig out my 1702 and use the chroma/luma cable. If this is the case, as you suspect, then I think that maybe we should work on a general-purpose Commodore 64/128-to-LCD circuit. I suspect that all that would be needed would be to amplify the chroma signal. - AlexReceived on 2018-05-03 18:00:02
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