MiSTer FPGA Forum

Calamity

Hi Mr Mister, I feel your pain. Some guides were created before things had got more or less stable, that's why some instructions may be more complicated than required really. Also, since I noticed people were creating batch files and other weird ways to pass options to GroovyMAME, I simply uploaded an already configured mame.ini (mame_mister.ini), ...

Calamity

throttle 1, syncrefresh 0 still works for me for Starwars/Spy Hunter.

Also, mister_interlaced_fb 0 helps eliminating the interlace artifacts when disabling syncrefresh.

Calamity

Separate general question. Is it possible to use custom video modes with Groovy MiSTer and have it scale to them? I think that is what I am doing with Star Wars already, so probably yes using the same concept. I want to try getting Supermodel 3 Star Wars Trilogy Arcade to work on my 15KHz screen in 480i. I assume in this case I would also not have...

Calamity

RiotRat, it sounds like you're missing some configuration, specifically the synchronization options, please check this:

https://forum.arcadecontrols.com/index. ... msg1769511

Calamity

EDIT: I spoke to soon. Sound is not working. I was testing with my big CRT TV which also sometimes has the sound coming from the PC going to it so I didn't notice the problem. Confirmed, will include a fix in next release. For sound on the PC, you can turn the volume off in MAME. EDIT: Sorry, after checking this, Starwars video run at 41 Hz (vecto...

Calamity

thorr wrote: ↑Fri Feb 09, 2024 7:15 pm
Very helpful, thanks! Could I make a separate shortcut for launching Star Wars directly and put -monitor ntsc -throttle 1 -syncrefresh 0 on the end of it?

You can, but the correct way is to have the all the general MiSTer options in mame.ini, and use specific ini overrides when needed, and not using shortcuts with options, bats or whatever.

Calamity

zakk4223 wrote: ↑Fri Feb 09, 2024 6:50 am
If you happen to be running your groovymame instance on a linux host, I compiled a thing:

https://github.com/zakk4223/Mister_USBIP

I've just tested this. I measured input latency with usbip vs local usb. On my tests, added latency is only 0.33-0.50 ms.

Calamity

Edit: Just deleted my huge post and want to focus on the main issue I am currently having... Star Wars the vector arcade game is trying to run at 640x480i @49.5 Hz. How do I get it to run 640x480i @ 60 Hz? I don't have a PAL capable TV. I had this same issue with Batocera and had to write a custom setup script to get it to configure properly for m...

Calamity

KennyL wrote: ↑Wed Jan 17, 2024 8:51 pm
Is it possible to downscale 480i and above to 240p? I guess that needs to be done on PC side.

It is. You have to define a custom crt_range in mame.ini for that. Either that, or force a resolution manually. e.g.

Code: Select all

mame gamename -r 640x240

Calamity

Jeruro wrote: ↑Fri Jan 05, 2024 1:39 pm
It would be nice to run GroovyMame on a Raspberry Pi next to Mister.

If you like small things, get a mini pc. Raspberry Pi won't cut it.

Calamity

Are there any plans to also route audio and controllers trough this core? If so that would be the ultimate boost for MiSTer. Audio, probably yes. The controllers are a problem though. Having the controllers polled on the MiSTer, then sent back to the PC, might add latency, defeating the purpose of the whole thing. We still don't know, so it might ...

Calamity

How feasible would it be to implement a SDL video driver that targets this, so that it could be used with any SDL-based application? This wouldn't work because the way synchronization is done is critical to avoid video glitches, so you need to have full control on the game/application loop. Can I run Steam games or emulators like Dolphin and then ...

Calamity

The MiSTer project is already awesome as it is. This is not an attempt of "filling the gaps" in the MiSTer project. The real reason for this to exist is to provide traditional emulators with a finally perfect solution for analogue output to a CRT . This is an old desire of us . In fact we'd be glad to use a cheaper, smaller board. But the...

Calamity

Would there be any way to get this to work using a Raspberry Pi instead of a PC? Any idea if this would increase the latency? Thanks When using this solution, basically all latency you get is that produced by how long it takes to emulate each frame. My results were obtained on a relatively old PC, so probably testing on a newer and more powerful c...

Calamity

Hi, One more question: do we still have to deal with modeline creation on the PC side (using VMM, ArcadeOSD, etc) ? Quietly hoping NOT, because this bit could be a bit of a 'mare when trying to set things up and then also running Windows in low res.... Of course not. Modelines are calculated by the emulator on the client and sent to the MiSTer, as ...

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