Main > Monitor/Video Forum
How to use SCART for our hobby
Zebidee:
--- Quote from: Jollywest on December 16, 2011, 04:25:58 pm ---I tried a few different resolutions in Powerstrip and by adjusting a few things in the TV service menu got a full desktop picture at resolution 720x540.
I plan to use vga-scart setup in a Driving emulator cab. MAME games look good but the Sega Model 2 and 3 games don't look great. I realise now that Sega model 2/3 native resolution is 496x384 med res 24khz, so the TV won't show it at native res. Best I could get was 360x270 non-interlaced which looked pretty awful, 496x384 interlaced which looked ok apart from the flicker or 720x540 interlaced whch looked pretty good but again with the interlace flicker. Is this the best I can hope for or is there a way around getting it at native without interlace? (I've been trying things with Powerstrip & Winmodeline to no avail) or is my best bet a dual sync arcade monitor to get these native resolutions? cheers.
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Yes, it is the best you can do - although you might find some other similar res that works OK. Maybe you could get slight improvement in picture quality if you could generate an interlaced res of 496x384 (would still be interlaced, but no stretching etc), but I seem to remember having trouble getting similar resolutions when I tried using Powerstrip (mind you, that was some time ago), maybe because the refresh rates were around the middle of the 50-60 khz range. TVs tend to like refresh rates close to either 50 or 60 khz, but not near the middle (e.g. 53-57khz). Or something like that.
On a 15Khz/low-res/CGA monitor (which is what a SCART TV effectively is) you are limited to a maximum of 288 vertical lines, unless you go for interlacing which gives up to 572 vertical lines (theoretically). to get a non-interlaced res with 384 vertical lines you need a medium res monitor (in a practical sense, this means dual res).
As Scotty from Star Trek would say: "Yae cannae change the laws of physics". Although, of course, they seem to do that pretty routinely in Star Trek.
Jollywest:
Thanks, yea MonMotha did confirm with me that this was the case.
I guess I was just looking for a cheaper alternative to buying a dual res monitor.
I tried 496 x 384 interlaced but even though the picture was ok, I couldn't get away with the flicker.
joecontra:
Hi everyone! :)
I built my own VGA-SCART cable as shown on this site:
https://sites.google.com/site/joecontrae/home
It works very well. I use it to watch movies or playing games with emulator or PC games with resolution 640x480 and 800x600.
Regards,
joecontra
Zebidee:
--- Quote from: joecontra on December 26, 2011, 05:26:24 am ---Hi everyone! :)
I built my own VGA-SCART cable as shown on this site:
https://sites.google.com/site/joecontrae/home
It works very well. I use it to watch movies or playing games with emulator or PC games with resolution 640x480 and 800x600.
Regards,
joecontra
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Interesting circuit diagram.
Unfortunately, most of the images at the linked site are unviewable - seems to require some registration at imageshack.
joecontra:
Hi!
Which images? What do you see insted of the pictures? A print screen would be nice.
I will have to fix that problem.
Regards,
joecontra
--- Quote from: Zebidee on December 28, 2011, 10:00:27 am ---
--- Quote from: joecontra on December 26, 2011, 05:26:24 am ---Hi everyone! :)
I built my own VGA-SCART cable as shown on this site:
https://sites.google.com/site/joecontrae/home
It works very well. I use it to watch movies or playing games with emulator or PC games with resolution 640x480 and 800x600.
Regards,
joecontra
--- End quote ---
Interesting circuit diagram.
Unfortunately, most of the images at the linked site are unviewable - seems to require some registration at imageshack.
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