DIY Pi2Jpac Jamma Adapter

ace5

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sorry another question got the mame videos working fine .but where do I put the picodrive videos in the same folder as mame or make a new 1 thanks
 

chunksin

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Its in the config.txt file in the boot partition, you can get to it by plugging the card into a pc, either reset your values to zero or comment them out with a #

Make sure you use something like notepad++ that keeps the Linux text file format, normal notepad adds extra carriage return characters Linux doesn't like!
 

FinalFight

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How good are these jamma-pi's? Ive been slowly selling my jamma pcbs and i dont know if this or a pc with groovymame is better? Heard these can be a pain to setup properly? Im planning on only having original boards for my dedicated drivers now as its just too much looking after them
Cheers :)
 

Flinnster

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Easy peasy really. Just get Rich's custom image and add roms.
Like all these things (including a groovymame PC) you could if you want tinker forever.
Just get it up and running first and see what you want / need from there.

They struggle with the very heaviest 2D and 3D titles - Taito F3 hardware for instance is too much for a pi3B currently. But everything up to say Neo-Geo / CPS2 / CPS3 and some fairly recent shmups are totally fine. Mine runs Outrun and Powerdrift with decent framerate.

So if you want to play the utter latest 31Khz + 3D stuff then sure, PC is probably still the best way to go. In time though.. I can see later generations of pi models easily emulating everything up to Dreamcast / PS2 / Xbox / Gamecube levels (so that means Triforce and Naomi stuff too).

For updates - it's probably best these days to shout out any specific issues you've found that need fixing rather than asking for general updates. The majority of stuff is running very well.

Flinnster2018-07-12 18:18:59
 

Flinnster

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If you want to replace the snapshots with videos instead you can drop them into the videos folder on the USB stick (the folder structure should be created when you first boot up with the USB stick in place), most formats are supported.

Ah, so I've been tempted with the whole console games thing on my Dino King cabs, but actually.. I held back from it.
I have my cabs for a reason, for the arcade experience. Plus.. shoulder button controls on console games don't translate well to arcade control panel buttons really.
So I left my pi jamma box specifically running arcade games only.

For my console box, I got a rather nice mini NES case so I could sit on the sofa and play console games using a controller, on my large CRT. I combined the NES case with USB SNES controllers and a GPIO to Scart lead, which was pricey - I could have made similar myself, but I was feeling lazy and it's done the job reasonably well (props to Escape-to-88 for giving me the heads up on this one).

The image this runs off is Recallbox, so completely different than the attractmode RetroArch image Rich has created for our JammaPi boxes. I've not yet bothered trying to hack about with it at all - I just copied a load of SNES games on that are either rediculous prices these days, or ones I have mint boxes for that I don't want to ruin by continually opening and closing them to take the carts out.

Some pics of the guts of it, and a clash of non-matching brands, models, and aspect ratios to give purists the wibblies on the lower right:
mini-nes.jpg

Flinnster2018-07-12 23:02:22
 

shrunkenmaster

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Has the image been tested on the latest Pi model? Trying to run this on a Pi 3B+ but it doesn't boot. Tried reformatting and reimaging a couple of times but no joy.
 

ace5

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Hi guys got the Wi-Fi set up can see it on the router info but can't see it in my Windows network and to transfer stuff over any info cheers .
 

deanzor

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Do you guys know if the Pi2Jamma supports audio over the cabinet speaker? Or is it from the audio out jack only?

Thinking of getting one, but would like to avoid having to put separate powered speakers in the cab if possible.
 

Flinnster

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What audio system is your cab running?

If it's straight jamma then yes, the audio from our homebrew pi->jamma setups is run through the jpac and runs like any other jamma pcb. You either have to set mame to output mono or you'll only get one sound channel though (or.. get a stereo to mono adaptor).

If it's running a separate amp that requires audio via 2x RCA phono connectors, you can get a 3.5mm headphone to phono lead and connect the audio up that way.
 

deanzor

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Ah sorry mate, I meant specifically the pi2jamma board, not a jpac set up. I'm just running the built in speaker on my jamma converted Dino King.
 

deanzor

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if there's a better thread for asking questions relating to the pi2jamma let me know, but...

Is there a specific Mame romset these require? Or does it vary depending on if you're using Recalbox/Retropie etc? I've tended to use pre-rolled images with a ton of roms already installed when dabbling with Pis in the past, but sounds like pi2jamma needs you to start with a specific blank image. I'm fine with that, but want to check I've got the right version of the roms.
 

Jon-A-Tron

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deanzor said:
if there's a better thread for asking questions relating to the pi2jamma let me know, but...

Is there a specific Mame romset these require? Or does it vary depending on if you're using Recalbox/Retropie etc? I've tended to use pre-rolled images with a ton of roms already installed when dabbling with Pis in the past, but sounds like pi2jamma needs you to start with a specific blank image. I'm fine with that, but want to check I've got the right version of the roms.

See page 6 of this thread about half way down. Post by t-m with a link to the best emulators for each ROM.

here it is..
https://drive.google.com/open?id=1WQOmcXWdgPSpxATfnt7RTs3nPqcWF-mvZQXwhnoQy5cJonTron2018-08-16 14:31:45
 

deanzor

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My Pi2Jamma arrived today. I paid 20 euros for their 'official' enclosure, and it appears to be a piece of junk. The Pi mounts okay, but once you plug in the pi2jamma the holes are well out of alignment. Anyone else had this issue?
 
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