IMO it’s better to use the step down than replace the stock PSU. For one it should be cheaper and that way you don’t put unnecessary extra voltage on the monitor too, even though it’s within tolerance. At a minimum without the step down it will run a bit warmer and at worst it could reduce the life of the tube.
Irken (MiSTer) JAMMA Expander
- Thread starter invzim
- Start date
avramce
Student
Chiming back in:Good to know
@avramce Chime in with how you set up things. I suggest everyone do a fresh install and set up things according to the way Invzim specifies.
So consensus is that you typically should be able to do everything in Gamepad mode, right? I guess I must have fubar'd the mapping, as the button input for navigating the menus was inconsistent with the keyboard mode, but I guess once I get the mapping right, I can just leave the setup in Gamepad mode and leave it in a sealed cabinet?
Considering the OTG hub setup @Metal Slug had going just to have a spare wireless keyboard available. Overall, very happy with the setup, just wish the Expander had a built in USB port to act as a hub of some sorts
It would be nice. I think @invzim might do it if he ever does a revision to the hardware.Considering the OTG hub setup @Metal Slug had going just to have a spare wireless keyboard available. Overall, very happy with the setup, just wish the Expander had a built in USB port to act as a hub of some sorts
But, adding a built-in USB hub adds more components, cost, plus another failure point. I rather have a cheapy external hub die on me than have it die on the Expander. Plus if you are leaving the expander in the cab for basically permanent use, adding a USB hub and leaving it in there is not a big deal, that's how Im going to do it along with a wired lan connection.
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invzim
Champion
In gamepad mode, service & test will not work - I would leave it in keyboard and use gamepad for those cores that doesn't support keyboard. In-game, you can also map those cores that doesn't support keyboard, WHILE in keyboard mode (confusing yes..), but then only player 1 will work - which is OK by me, as I usually do my playing alone
avramce
Student
Yep, I was just trying to get Puzzle Bobble working for 2-player play, works fine for gamepad mode, but I'll probably roll 1P whenever possible. Is there anyway to skip mapping a button while in keyboard mode? Like for the NG core, they ask you to map a button for ABC, don't need thatIn gamepad mode, service & test will not work - I would leave it in keyboard and use gamepad for those cores that doesn't support keyboard. In-game, you can also map those cores that doesn't support keyboard, WHILE in keyboard mode (confusing yes..), but then only player 1 will work - which is OK by me, as I usually do my playing alone
Hold start, tap left on the controller. It will exit out of the button mapping, but keep whatever you've actually mapped so far.Yep, I was just trying to get Puzzle Bobble working for 2-player play, works fine for gamepad mode, but I'll probably roll 1P whenever possible. Is there anyway to skip mapping a button while in keyboard mode? Like for the NG core, they ask you to map a button for ABC, don't need that
Found that out last night
Softdrink
Professional
This is mildly off topic but - from what I've seen, on most cabs you can actually send whatever resolution you want through the JAMMA edge as long as the monitor can support it. For example, in my Blast I run 31k VGA video into the JAMMA edge (through a JVS IO that handles sync combining and level matching of course, and with the monitor DIPs set to 31k mode).
The JAMMA wiring just directly passes the RGB + Sync signals to the monitor. JAMMA wiring in and of itself shouldn't introduce additional processing of the signal, so it's up to the monitor to support (or not support) the resolution you send in.
In my opinion it's actually vastly more convenient to send everything through JAMMA, since it makes changing games faster and easier. It also reduces the chance of one possible problem - a lot of monitors that will take both a JAMMA and a VGA input actually have both inputs connected at the same time at all times, meaning if you accidentally connect both sources at once you can potentially run into issues.
Now as for whether the MiSTer is sending at 15kHz or not I can't comment - I don't have one (yet). But at least in theory a MiSTer connected to the JAMMA edge could send 31kHz RGBS, and 31k-capable monitors would be able to display it.
MiSTer allows us to manipulate the rendering screen only in digital mode via the core menu. Analog retains its original state as if it’s displaying in 15khz limited to arcade/dip switch service menu functionality per game.
Anselmo
Champion
Anybody else run into issues with adding a credit on a lot of roms? Seems to be only the older pre-jamma roms that won't coin up. Specifically Tetris doesn't coin up to name one, but the issue is across alot of games.
I had causal set with my friend in SFA2 on both original cps2 and mister expander setup for test purposes. we saw no difference in input lag between the CPS2 and the Mister expander setup.
http://imgur.com/a/01NJOya
http://imgur.com/a/01NJOya
digitron
Grand Master
Anyone else heaving input issues occasionally in DDP? Holding shot and left sometimes doesn't register left.
I had it on most of Genesis games for some reason, except for Golden Axe and some other games.
invzim
Champion
If SyncGuard kicks in, it's always useful to have a look at the video info screen on the Expander, could be it defaults to PAL 50Hz..
In the next firmware SyncGuard will be switchable between 15kHz, 15/25 kHz auto, 25 kHz, 31 kHz, Tri-Sync and off.
andynumbers
Professional
I'm guessing this is impossible since it's probably a permanent design, but I figured I'd ask anyway:
Is there any way to increase the analog video output level? When I compare the Neo Geo core to a real MV-1B motherboard, the video is slightly darker. Normally this is not a problem since I can just turn the contrast knob up on my arcade monitor to compensate. But I am running this in an old Aero City MS8 where there is no easy contrast knob. And I want to be able to swap back and forth between the Expander and real JAMMA hardware without having to make monitor adjustments every time.
Is there any way to increase the analog video output level? When I compare the Neo Geo core to a real MV-1B motherboard, the video is slightly darker. Normally this is not a problem since I can just turn the contrast knob up on my arcade monitor to compensate. But I am running this in an old Aero City MS8 where there is no easy contrast knob. And I want to be able to swap back and forth between the Expander and real JAMMA hardware without having to make monitor adjustments every time.
