MiSTer FPGA Forum

As I've said before, I have the same problem using the IO Board 5.5 (so using the VGA port) AND direct video (using an HDMI to VGA adapter). But no worries, I was told that yes, the Atari ST core is using a 31HKz horizontal frequency so that explains why I doesn't work.

Yes I tried everything, a new configuration and so on.

If you can test because I'm not sure the Atari ST core operates at 15KHz like a real ST. Thanks in advance.... I cannot test myself as my tv receives no signal and others cores at 15KHz work pretty well.

retrorepair wrote: ↑Wed Sep 02, 2020 8:44 am My cat basking in the green lovelyness of the Atari ST Mister core in 15khz (over RF no less).

Can you, in the mister config.ini file, set:
Like that when the core is started a popup will display the H and V frequencies when running over the VGA port.

Thanks !

I did: https://github.com/MiSTer-devel/AtariST_MiSTer/issues/9

@Aberu, on my side I did not notice major problems and Antonio was pretty fast to answer any of my questions. Composite is less stable than S-Video (picture is a little wobbly) but I guess this is expected with Composite So I did not have the same (bad) experience.

Can you post a picture of the issues you have so that I can compare ?

Hi, I tried using the IO Board 5.5 and direct video, doesn't work on my Sony PVM14N5U. I don't know if it can support 31KHz horizontal frequency, I cannot find the detailed specs. That's one of the few cores I cannot manage to run on "VGA" and Direct-mode. I tried other cores supposed to be at > 15KHz: - Apple II core works (and seems to ...

For those who may have the same problem oneday, here is the solution. Required: Buy Antonio's VGA to Composite/S-video adapter (https://www.antoniovillena.es/store/product/vga-composite-s-video-adapter/) Then you have 2 options, I did not see any compatibility difference (same cores work, same core don't work), quality is better with direct video m...

Thanks!
I ordered one of antonio's adapter! Hopefully that will make it!

Ok so I guess that's pretty tricky

Hi, I just found a Sony PVM-14N5U on the street, works pretty well with my (real) C64 so now I'd like to use it my my Mister, what is the best / easiest way? This monitor is compatible PAL and NTSC nd has 2 possible inputs: - Y/C (S-video) 4 pins - Composite Should I use the IO Board VGA output then find a converter? Or a direct HDMI-VGA converter ...