- Thread starter misteraddons
- Start date
Astro_jamma
Beginner
Whups sorry looks like I had the video set to line in the adc test
Here are the results set back to 3.3 and saved in adc settings
Pin 12 Video Red= 0.332V
Pin 13 Video Blue= 0.338V
Pin N Video Green= 0.310V
Here are the results set back to 3.3 and saved in adc settings
Pin 12 Video Red= 0.332V
Pin 13 Video Blue= 0.338V
Pin N Video Green= 0.310V
Are you using a scope or a multimeter for these readings?
Astro_jamma
Beginner
I'm using a multimeter, but I can grab my scope if that would help.
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Astro_jamma
Beginner
Sledgehound
Beginner
Hello Everyone,
I've been doing a lot of reading the past 24 hours. And I think I understand my situation, but I wanted to throw it out there in case there is something I missed. I own a horizonal cabinet from the 80s. I have my brand new mistercade version 2 working nicely connected to the jamma interface. However, with FPGA and with an original cabinet running a horizontal 15Khz monitor, there is no way to rotate the screen 90 degrees to play Vertically Oriented games, even in a downgraded emulated sense. I would need either a second cab vertically aligned, or I would need to physically rotate my CRT 90 degrees in the cab (at which point the horizontally oriented games will be off 90 degrees), or pull the CRT and replace it with a modern HDMI monitor. Could I trouble someone to verify that my research is accurate and I didn't miss anything, before I consider my options.
Appreciate any and all responses.
I've been doing a lot of reading the past 24 hours. And I think I understand my situation, but I wanted to throw it out there in case there is something I missed. I own a horizonal cabinet from the 80s. I have my brand new mistercade version 2 working nicely connected to the jamma interface. However, with FPGA and with an original cabinet running a horizontal 15Khz monitor, there is no way to rotate the screen 90 degrees to play Vertically Oriented games, even in a downgraded emulated sense. I would need either a second cab vertically aligned, or I would need to physically rotate my CRT 90 degrees in the cab (at which point the horizontally oriented games will be off 90 degrees), or pull the CRT and replace it with a modern HDMI monitor. Could I trouble someone to verify that my research is accurate and I didn't miss anything, before I consider my options.
Appreciate any and all responses.
astro_zombie138
Champion
You pretty much hit the nail on the head man. You're not rotating the image on a crt only on an lcd. That's how the collection starts growing
ShootTheCore
Legendary
I can also confirm that your research is correct. The MiSTer itself will only rotate the image if you enable vga_scaler, disable direct_video and force the output resolution to 15khz in the mister.ini file:
vga_scaler=1
direct_video=0
video_mode=320,8,32,24,240,4,3,16,6048
NOTE: these settings are from when I experimented with CRT rotation on MiSTer a few years back. They may not work with the current MiSTer framework.
Even if these settings work for you, the top and bottom edges of vertical games will be severely cut off. Some late model cab CRTs support higher resolutions than 15khz but a cab from the 80s won’t. If you want to stay with a CRT in your cab (and I hope you do) consider a PC monitor for a swap rather than a flat panel display - they display higher resolutions than 15khz that will look good when the image is rotated. But realistically buying a second cab just for vertical games is what most of us here on AP have done.
My Mistercade V2 is dim as well, no matter what monitor or cabinet it’s in, dim on k7000, k7400, nanaos and Toshiba pf
The color pots came turned all the way for full color already so the only adjustment you can do is make the image dimmer
Is there a fix for that in the works?
My Mistercade v2 is just sitting collecting dust.
The color pots came turned all the way for full color already so the only adjustment you can do is make the image dimmer
Is there a fix for that in the works?
My Mistercade v2 is just sitting collecting dust.
astro_zombie138
Champion
Did you adjust the brightness pot on your chassis remote pcb? I haven't had that particular issue.
It could give us a better idea of peak voltages. I'd put a color bar up through CPS2 or something and see what the peak voltages are on the scope.
With my Mistercade Versus I have to bump the brightness a bit on my MS8 monitor. That should take care of it for you.
ShootTheCore
Legendary
Peak voltages on the Red, Green and Blue lines should be 3.3V. It was tuned to match the Neo Geo MV1C PCB.
Astro_jamma
Beginner
I just tested the Mistercade V2 on my Neo 29 cab(Hitachi-GMK-29FS2) with the JNX big red adapter and it looks amazing. The issue seems to be only on my New Astro City.
With that said it rules out a defective product and now I'm looking into what could be causing the issue on the NAC. I'm going to install a 3 prong with dedicated ground today.
Also can anyone confirm that Frame ground/Field Ground is separate from the monitors chassis ground on their Astro City or New Astro City?
I just want to make sure that its normal for the monitor to have a isolated ground.
With that said it rules out a defective product and now I'm looking into what could be causing the issue on the NAC. I'm going to install a 3 prong with dedicated ground today.
Also can anyone confirm that Frame ground/Field Ground is separate from the monitors chassis ground on their Astro City or New Astro City?
I just want to make sure that its normal for the monitor to have a isolated ground.
Astro_jamma
Beginner
Yeah after checking, I really don't think this is a video out signal issue.
Its some sort of interference, you can see it start to fill in slowly from boot up.
I'm leaning towards a grounding issue on this one.
"Garbage in garbage out" as the old saying goes
Astro_jamma
Beginner
Yes, Astro monitors are floating
Astro_jamma
Beginner
Thank you
Astro_jamma
Beginner
Bummer. Not too surprised, but glad you got the cab grounded anyway! Good thing to do regardless.
