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Irken (MiSTer) JAMMA Expander

Got a new one in thanks to Invzim for the fast shipping as always.

This one works much better! I noticed the screen on the previous one didn't show anything but this new one was about as plug and play as it could be!

I've got 2 outstanding issues, I seem to be getting a very faint 'double image' on the Mister with my blast city, I've put a photo below to show what I mean... anyone seen this and can point me in the right direction?
20220511_212921.jpg


The other issue is I have to manually switch the frequency every single time I boot up, change core, anything! I know my blast isn't an auto sync Nanao but it's just a blank screen on startup, even if I'm on the right frequency until I change it and change it back again on the controller.

Much appreciated in advance and again thanks to Invzim, great bit of kit that!
 
I've enabled the 4 as mentioned, I noticed force scandoubler was also on which I changed but still no luck, I assume there's a few other switches I need to adjust, I'll keep messing around with the extra options thanks Invzim.
 
I briefly searched the thread and didn't find anything, also didn't see anything on the site, so gonna ask here. :)

Anybody know of a way to set the MiSTer+JAMMA Expander to boot in vertical/tate mode? I've been playing more vertical games lately, and it would be nice to just have the menu and such display correctly when in vertical mode. :)

Thanks!
 
kazuo said:
I briefly searched the thread and didn't find anything, also didn't see anything on the site, so gonna ask here. :)

Anybody know of a way to set the MiSTer+JAMMA Expander to boot in vertical/tate mode? I've been playing more vertical games lately, and it would be nice to just have the menu and such display correctly when in vertical mode. :)

Thanks!
Click to expand...
The Expander has no influence over tate/non-tate, but just rotating the mister menus should do the trick?

https://github.com/MiSTer-devel/Main_MiSTer/wiki/Configuration-Files#osd_rotate
 
Devil_mish said:
I've enabled the 4 as mentioned, I noticed force scandoubler was also on which I changed but still no luck, I assume there's a few other switches I need to adjust, I'll keep messing around with the extra options thanks Invzim.
Click to expand...
After much trial and error it was actually the direct_video option that was causing me issues for some reason, I've disabled that and it's working. Next up I just need to see if I can force the new PSX core in 31Khz as my Blast City isn't auto-sync so I have to manually change it when I want to boot a PSX game... Which isn't the end of the world for now.
 
Devil_mish said:
After much trial and error it was actually the direct_video option that was causing me issues for some reason, I've disabled that and it's working. Next up I just need to see if I can force the new PSX core in 31Khz as my Blast City isn't auto-sync so I have to manually change it when I want to boot a PSX game... Which isn't the end of the world for now.
Click to expand...
I'm happy that you got something working, but direct_video really is the way to go - if that doesn't work, something else is wrong.. Does your cab work OK with other PCBs, could it be your monitor needs some adjusting?
 
invzim said:
I'm happy that you got something working, but direct_video really is the way to go - if that doesn't work, something else is wrong.. Does your cab work OK with other PCBs, could it be your monitor needs some adjusting?
Click to expand...
I haven't had any issues with any other boards, although I mostly run via JVS rather than Jamma but it shouldn't make a difference as it's the same VGA cable? I've spent some time playing around with the chassis, it does seem to be slightly improved or maybe that's just me being hopeful. I'll keep plugging away but if experts know which pot specifically is the culprit please let me know!
 
Devil_mish said:
I haven't had any issues with any other boards, although I mostly run via JVS rather than Jamma but it shouldn't make a difference as it's the same VGA cable? I've spent some time playing around with the chassis, it does seem to be slightly improved or maybe that's just me being hopeful. I'll keep plugging away but if experts know which pot specifically is the culprit please let me know!
Click to expand...
I'm not familiar with your monitor but the VGA input is usually 75ohm termination on the chassis whereas JAMMA boards usually drive a 1000ohm+ termination. My PFX has different inputs specifically for that, and from what I can see it adds a 1.5kohm resistor to the signal input. I assume the JAMMA expander would then be properly operated on the high impedance input.
 
I'm on the right track, this is about as good as I seem to be able to get it, similar photo as before for comparison... I think it's so hard to notice that I'm happy with this and you're right, direct_video is so much better.

One final question, the expander doesn't seem to want to update to 'user lock disabled' for me to access the menus via the start button shortcut? I've tried with an SD card saving config and without and no luck? Attached a terrible photo for reference (sorry!)
 

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Devil_mish said:
I'm on the right track, this is about as good as I seem to be able to get it, similar photo as before for comparison... I think it's so hard to notice that I'm happy with this and you're right, direct_video is so much better.

One final question, the expander doesn't seem to want to update to 'user lock disabled' for me to access the menus via the start button shortcut? I've tried with an SD card saving config and without and no luck? Attached a terrible photo for reference (sorry!)
Click to expand...
User lock is toggled with physical switch:
1652551901693.png

https://irkenlabs.com/jamma-expander/operation
 
invzim said:
@Devil_mish sounds like a hardware error, a little odd, as the factory init/automated QA stuff has a test for all switches, including that one.

Send me a pm/email and we'll get it sorted.
Click to expand...
All sorted, just a switch that had juuust come out of place from the board to not recognise, a bit of force and the right angle and it's fine now.

Big thanks to Invzim for the support over PM!
 
Also to loop back on this, duplicate image was because I was pushing video via both Jamma and via a VGA directly into the Mister... Makes a lot of sense in hindsight! X/
 
invzim said:
I got around 20 units that I have to manually assemble an IC on, after those are gone restock will depend on parts availability - which doesn't look fantastic at the moment..
Click to expand...
Can i book one of the 20?
 
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