Jamma Pi Thingy looping

[councilface]

Hello All,

I’m not sure why – but when I use a JPAC (Set to 15khz) with my Pi 3b, in conjunction with chunskins Pi Jamma Thingy image, on my atomiswave tri-sync, the pi gets stuck in a loop. It keeps displaying the PI JAMMA THINGY loading screen.

When I use it on a normal LCD, everything seems fine.

I have been running jamma pin 3 at 5.25v could this be a factor?

Cheers,

CF

 

[JonnyG]

Was hoping someone with a bit more knowledge might have come up with the answer to this one for you as I'd be interested to know what's going on myself.

Could you temporarily disable any power pins at the edge connector, just put some electric tape over the contacts perhaps? See if that makes a difference.

 

[Mr20to5]

I run the same image on mine, with my +5v turned up also, so doubt it is that.

#helpingnothelping

 

[chunksin]

That's really odd, the only time I've known that happen is when you choose the attract mode setting to automatically launch the last played game and then choose the reboot option - that ends up in an endless reboot cycle

 

[councilface]

Was hoping someone with a bit more knowledge might have come up with the answer to this one for you as I'd be interested to know what's going on myself.

Could you temporarily disable any power pins at the edge connector, just put some electric tape over the contacts perhaps? See if that makes a difference.

Sounds like a plan - I'll give it a crack!

 

[Retroman839]

Can it be that the pi thingy image
Is configured for 31khz ?

 

[councilface]

Can it be that the pi thingy image
Is configured for 31khz ?

I thought that the stock image was configured for 15khz?

 

[Retroman839]

Isnt that for the rgb-pi?

With Pi thingy isn’t the 15khz mode selectable in the options comfig menu..

I’m just wondering if your attract mode
Is in 31khz and the pi Thingy isn’t going into attract

 

[chunksin]

Hello All,

I’m not sure why – but when I use a JPAC (Set to 15khz) with my Pi 3b, in conjunction with chunskins Pi Jamma Thingy image, on my atomiswave tri-sync, the pi gets stuck in a loop. It keeps displaying the PI JAMMA THINGY loading screen.

When I use it on a normal LCD, everything seems fine.

I have been running jamma pin 3 at 5.25v could this be a factor?

Cheers,

CF

Just to confirm you are running the pi jamma thingy image in 31khz on your LCD? or 15Khz on LCD or a different image on LCD?

 

[councilface]

Just to confirm you are running the pi jamma thingy image in 31khz on your LCD? or 15Khz on LCD or a different image on LCD?

Hi Chunskin, I'm using whatever the default is. It does look to be Hi-res on my LCD (TV) though - is there a way to set to15khz in the image menu then? I only have 15khz set on the jPAC using the bridge connector. I hope this makes sense.

 

[Retroman839]

You need to change rez whilst using a lcd .. then hook it up to crt
Before next power on

 

[Retroman839]

Yeh that’a most likely your issue.

Jpac does not change the res.
In screen options menu select 15khz mode,

you’ve set the jumpers as if you are in 15khz That will cause screen flicking

 

[councilface]

Yeh that’a most likely your issue.

Jpac does not change the res.
In screen options menu select 15khz mode,

you’ve set the jumpers as if you are in 15khz That will cause screen flicking

Screen options menu? I dont see that option unfortunately.

 

[Retroman839]

Screen options menu? I dont see that option unfortunately.

Yeh sorry it’s not called screen options

It will say something like
select 15khz mode

 

[councilface]

Yeh sorry it’s not called screen options

It will say something like
select 15khz mode

Unfortunately I don't get anything like that come up on the menu. Is it possible that the pi image has recognised that its being used on an LCD and adjusts resolution accordingly?