|
Post by David Murray on Mar 8, 2007 21:40:51 GMT -5
Most who know me know that I've wanted my Amiga systems to be usable on a standard television. I've tried modding my Amiga 1000 to have S-video to no avail. Currently since my 1084 is non-functional the only way I can play amiga games is to hook my A1000 to my 13" TV with the composite video. It actually sucks using that because it is so blurry. The Amiga 500 is pretty clear on the TV but in black and white only. So I found the solution: I have confirmation from another Amiga user that this will definatly work on an Amiga. However, he has used it on the outside. My plan is to mount it inside the Amiga and mount an S-Video jack on the back of the Amiga itself. The user who tried this said the S-video was extreemly clear and the composite video actually looks better than the built-in composite of the A1000. I was also thinking this might be a possible solution to the Commodore 128's 80-column mode. I realize this device is analog and the C128 is digital, however, I believe with the right combination of resistors the RGBI signal could be translated to work with something like this. Think about it. The 80-column display being output in color with S-video. Might be a good alternative to the C=VGA vaporware. I'm going to post this over on the commodore128.org forums and see what they think.
|
|
|
Post by expertsetup on Mar 9, 2007 1:54:50 GMT -5
This is great David as my 128 came in the mail today. Here is the data sheet for the chip, it seems like a total solution package for this problem. The site also has the PDF for a development board which will help provide the basic schematic if you would like to DIY. www.analog.com/en/prod/0,,765_798_AD724,00.html [Your going to have to cut-n-paste the last of the address there, comma troubles, even after all these years!]
|
|
|
Post by thurstan on Mar 9, 2007 6:06:10 GMT -5
any my C128 will arrive in the post any day soon!
|
|
|
Post by David Murray on Mar 9, 2007 9:20:40 GMT -5
Okay.. I just kind of made this schematic up in a hurry.. but I think this should work: I don't know what values the resistors or diodes need to be. But I see no flaw in the theory here. Here is an easy way to find out without having the converter board I'm getting. First, build this little circuit and then pump it into the analog-input of your 1084 monitor and see how it likes it. If it likes it okay, then I'm sure the little converter board will like it too.
|
|
|
Post by David Murray on Mar 19, 2007 18:03:32 GMT -5
|
|
|
Post by MadModder on Mar 20, 2007 16:21:10 GMT -5
I used a standard amiga scart cable back in the days. It's RGB+sync from the 23-pole video port. No extra electronics att all and MUCH better than S-video.
|
|
|
Post by Golan Klinger on Mar 20, 2007 16:27:58 GMT -5
SCART is virtually unknown, which is to say unused, in North America.
|
|
|
Post by MadModder on Mar 20, 2007 16:35:10 GMT -5
Right, I forgot. I wonder why, because there are quite a lot of advantages.
|
|
|
Post by Golan Klinger on Mar 20, 2007 17:27:25 GMT -5
I suspect it has something to do with the fact that SCART is virtually unknown in Japan and the majority of electronics sold in North America in the 80's originated there. The Japanese have a strong 'not invented here' mentality and in general, Japanese and North American companies seem to have an aversion to European standards. I really don't know why.
|
|