What's new
By:
Filters

MiSTer FPGA

300wins said:
Can someone please tell Jotego that Street Fighter 2 Hyper Fighting runs too fast now. Before it ran fine, but the sound was not good. But now the sound is fine but Hyper Fighting runs way too fast. I have a video here to show the difference. Left is the MiSTer and right is the actual PCB.


MiSTer versus actual PCB
Click to expand...
I think you can open an issue in GitHub.

Edit: @gamezer0 beat me to it!
 
Thank you. I don't use github, so I will see what I can do.
 
300wins said:
Thank you. I don't use github, so I will see what I can do.
Click to expand...
Github can feel daunting at first, but just register, create an issue with this same description and link to video and that’s it. Jotego is very responsive and will ask for any extra details he might need.
 
300wins said:
Can someone please tell Jotego that Street Fighter 2 Hyper Fighting runs too fast now. Before it ran fine, but the sound was not good. But now the sound is fine but Hyper Fighting runs way too fast. I have a video here to show the difference. Left is the MiSTer and right is the actual PCB.


MiSTer versus actual PCB
Click to expand...
Hello, I'm touch with him.

The issue was reported here: https://github.com/jotego/jtcores/issues/584
He has to verify it, but since cores share modules, sometimes changes in one module affect other cores. That may have happened.
 
There are sync issues with Jotego system 18 core and many CRT TV/monitor.

I'm wondering if anyone with a real system 18 can do an A/B comparison.

Jotego is suggesting we replace capacitors on the monitor.

For me, the core will not sync on my Sony CRT but does on my Panasonic; although there a wave near the top.
 
GeorgeSpinner said:
There are sync issues with Jotego system 18 core and many CRT TV/monitor.

I'm wondering if anyone with a real system 18 can do an A/B comparison.

Jotego is suggesting we replace capacitors on the monitor.

For me, the core will not sync on my Sony CRT but does on my Panasonic; although there a wave near the top.
Click to expand...
I can, but which CRT model?
 
Ziggy Cheetos Dust said:
I

I’m guessing someone who has a Mister that’s showing the sync issues on their crt and then swap to the real hardware on the same CRT?
Click to expand...
OK, that makes sense. I do have a MiSTer, these PCBs, and many CRTs, however I don't have the core... so I can't say!
 
XtraSmiley said:
OK, that makes sense. I do have a MiSTer, these PCBs, and many CRTs, however I don't have the core... so I can't say!
Click to expand...

Must be nice!

I'm using a Sony KV32-FSXXX I don't remember the extract model and I can't get behind it to look!

You can get them with update all.

Even without the jtbeta.zip you can still load the cores.
 
I believe the issue is sync related. My consumer CRTs don’t like the ypbpr output of this core. My PVM syncs the RGB no problem.
 
Does anyone have a recommendation for a nice looking Mister case that supports dual ram suitable to sit next to game consoles?
 
GeorgeSpinner said:
There are sync issues with Jotego system 18 core and many CRT TV/monitor.

I'm wondering if anyone with a real system 18 can do an A/B comparison.

Jotego is suggesting we replace capacitors on the monitor.

For me, the core will not sync on my Sony CRT but does on my Panasonic; although there a wave near the top.
Click to expand...

Really interested to hear this.

The System 18 core is the first time I've gotten some picture issues from any MiSTer cores at all.
(running in it in a SNK Candy 25 - Toshiba A59JMZ90X & Toei TC-RM25T chassis)

No sync issues but the convergence is off and makes the picture look blurry. Definitely noticeable over the razor sharp picture I get in all the other cores.
 
Can confirm the System 18 core problems on multiple fully serviced MS8-29 and MS9-29 monitors - sync holds, but there's convergence shift and a high pitch out-of-frequency whine. You can see the problem clearly by loading another core, and then switching to a System 18 one. The clarity and convergence will be very obviously out of whack.

I provided some tests on this issue starting three weeks ago, hoping to get more useful info to Jotego to acknowledge there's a problem specific to the core, but it seems like the current verdict is that it is absolutely a capacitor issue despite a ton of people having the exact same problems on the exact same CRTs, which seems strange to me.

In the tracking thread on the problem, someone did A-B tests with real System 18 hardware. As expected (and in line with my own tests), the problem is only present in the System 18 MiSTer core. He's saying that the difference in voltages between the core output and the real PCB would probably cause this, as his reply outlines here: https://github.com/jotego/jtcores/issues/692#issuecomment-2167814742

I think the next step would be to figure out if anyone does NOT have a problem with the core on arcade monitors, as he's claiming this as a rare issue, when I'm not quite sure it is. :D
 
The monitor I am having my convergence issue with this core had the Toei TC-RM25T chassis recapped not too long ago, it's definitely not a capacitor issue in my case.
 
Mitsurugi-w said:
S18 had two versions of the motherboard. One had sync issues like crazy. The other fixed the issue.
Click to expand...

Is Jotego aware of this? Might be the exact cause of the problem (but weird that Jotego wouldn't have experienced the issue himself). This is of course assuming he based the core off that revision of the board and not MAME or something.
 
You must log in or register to reply here.
Back
Top