Den Tue, 5 Sep 2017 14:38:40 +0200 skrev firstname.lastname@example.org: > > > On 2017-09-03, at 23:30, Mia Magnusson <email@example.com> wrote: > > > > I fired up my old CRT TV and also a supposedly good DVD player > > (Yamaha DVD-S1700), and my C128. > > > > Here are some pictures. [...] > > > > This is how my C128 looks on my modern Samsung plasma. I assume the > > TV set notices a delay and takes a bad guess how to adjust to the > > situation, making it even worse: > > https://farm5.staticflickr.com/4394/36199906213_a74e676c9d_o.jpg > > Having a look at this (the DVD stuff doesn't add any value here as > its signal is probably way closer to the standard specs than what the > computer gives) I would say: > > a) you seem to have the colour shifted not only to the right but also > down. You don't expect that adding some tens of metres of cable for > chroma can fix this, do you? I didn't even notice that. That's a PAL problem, the vertical resolution of chroma is supposed to be half of the luma resolution within each field so the TV probably doesen't really know how to handle the signal. I guess that the CRT TV does some tricks here. But I expect that tens of meters of cable would correct the horisontal shift. > b) I'd say you are rather lucky getting picture, which is that good. > I recall my quest to get something even remotely palatable some time > ago and all (six) but one were worse than yours. > > The above is not to say that you should be happy with this picture. > Surely not. What it is to say that we seem to be barking under the > wrong tree here. Well, although the signal from a C64/128 doesn't follow the standards, there is no reason for not being able to decode the signal into a perfect picture. I haven't looked into how the picture looks with some s-video to hdmi converter, if there even are any that has some mode especially made for C64/128. If there aren't any such that gives a perfect picture there is definitively room for one in the market IMHO. I shall look into doing some more tests, i.e. getting a test picture with all combinations of text color x on background color y and use either just plain letters of perhaps checker patterns/stripes of different width. That would probably make the timing issue more visible. Or perhaps it's just to use a white background and display text in different colors; red seems to be the worst. -- (\_/) Copy the bunny to your mails to help (O.o) him achieve world domination. (> <) Come join the dark side. /_|_\ We have cookies. Message was sent through the cbm-hackers mailing listReceived on 2017-09-06 13:02:49
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