Hmmm - openJAMMA multiboard

[sosfx]

Check this out !

http://openjamma.org/faq/

interesting

Alpha12013-04-17 20:58:22

 

[Alpha1]

Very cool!

 

[Alpha1]

Man this actually looks really interesting.

 

[Alpha1]

Just fixed your link too

 

[IDCHAPPY]

It does look pretty good, hopefully better than some of the others out there

 

[samusaran]

Certainly got potential

 

[Pacman83]

Looks like a nice product when it becomes available

 

[trm]

I'd expect this to have a pretty good chance of existing given the specs they're aiming for. Not figured out a BOM yet so no idea what kind of volume they'd need to hit the $100 price point though.

PS Updated the thread title to give a better idea of topic

 

[DanP]

How far along is the arm MAME version? Is it now stable/working for the RPI? Anyone using it?

DanP

 

[chadsarcade]

How far along is the arm MAME version? Is it now stable/working for the RPI? Anyone using it?

Mame4All has recently been ported to the Pi, it's based on 37b5 or something like that from back in the day when low hardware spec ran the stuff full speed. Mame4All has been favoured on handhelds like the GP2x/Wiz etc for a while and is pretty optimised.

I've not tried it on the Pi yet but have "found" the roms from that build so I'm ready to give it a try - maybe this weekend. Pity the Pi only has Composite video or HDMI out as that makes it a bit trickier to interface to a monitor in a cab.

 

[cools]

I'd expect this to have a pretty good chance of existing given the specs they're aiming for. Not figured out a BOM yet so no idea what kind of volume they'd need to hit the $100 price point though.

PS Updated the thread title to give a better idea of topic

The guy is over on AO. He's stumping upfront for 1000 boards.

 

[Adrian Purser]

Pity the Pi only has Composite video or HDMI out as that makes it a bit trickier to interface to a monitor in a cab.

A convoluted way to connect it to an arcade monitor would be to use a HDMI to VGA adaptor and then a VGA to RGB adaptor. I did this as an experiment at work to get a Raspberry PI to drive a scart TV.

http://www.amazon.co.uk/exec/obidos/ASIN/B009CRN810/ref=ox_ya_os_product

http://www.ebay.co.uk/itm/VGA-TO-CGA-CVBS-S-VIDEO-CONVERTER-PC-to-VGA-GBS-8100-video-game-converter-/180833094124?pt=LH_DefaultDomain_0&hash=item2a1a7e09ec

 

[chadsarcade]

A convoluted way to connect it to an arcade monitor would be to use a HDMI to VGA adaptor and then a VGA to RGB adaptor. I did this as an experiment at work to get a Raspberry PI to drive a scart TV.

I've read about similar methods on the forums, I was wondering if the video conversion would introduce a delay though which might be noticeable in a game, but OK for general video display purposes. I may try one of those HDMI-VGA adapters as I've a couple of cabs with a VGA monitor. Hopefully GPIO connected controls would do away with the need for an IPac

Apologies for straying from the OT. The open Jamma board does look interesting.

 

[trm]

The guy is over on AO. He's stumping upfront for 1000 boards.

Even better then. I've not played with any of the multis that have a decent GPU so this one looks like it'd be fun to play with.

 

[Muppz]

lol, how things have changed, I remember having discussions with various old timers back in 1999 about coming up with a jamma board that played mame and being told not to be silly

 

[Alpha1]

MUPPZZZ!!!

 

[ZedEx48K]

VGA to RGB adaptor. I did this as an experiment at work to get a Raspberry PI to drive a scart TV.
http://www.ebay.co.uk/itm/VGA-TO-CGA-CVBS-S-VIDEO-CONVERTER-PC-to-VGA-GBS-8100-video-game-converter-/180833094124?pt=LH_DefaultDomain_0&hash=item2a1a7e09ec

Did you get one of these boards connected via VGA to RGB scart? I've never found the info to tell me it actually does that (just the claims written on the connectors).

Oh and do they retain the settings when powered down?
ZedEx48K2013-04-19 13:03:22

 

[Adrian Purser]

Did you get one of these boards connected via VGA to RGB scart? I've never found the info to tell me it actually does that (just the claims written on the connectors).

Oh and do they retain the settings when powered down?

Yes, it works fine. You may however need to connect the fast-blanking pin of the scart connector to +5V to tell the tv that you want to use the RGB input. Otherwise, depending on the tv, you will get a black screen.

I cant remember it remembers its settings.

This page has some info about wiring up a scart connector -

http://www.idiots.org.uk/vga_rgb_scart/

Regarding the original topic, I think it sounds like a nice bit of kit and I'll definitely be keeping an eye on it. I'm interested from a developers point of view and would be keen to have a play with one. It doesn't say whether it has a JTAG connector or not.

I would also be keen to see a similar board with an FPGA so that it could be used for the FPGA Arcade stuff.

 

[corn]

How far along is the arm MAME version? Is it now stable/working for the RPI? Anyone using it?

DanP

I tinkered with piMame for a bit in my Mushi-King cab. Managed to get the Pi (and a VGA adapter) powered from the JVS connectors and with an JVS-PAC it was looking like it would make quite a neat little solution. I only tried a few games (Ghouls and Ghosts, Bubble Bobble) and they seemed to run ok if you overclocked the pi to the max setting.

I ran into a few issues with repeated keypresses (don't think it was anything to do with the JVS-PAC) and got bored of trying to fix MAME config files etc. Not really progressed any further since then.

Would be interested to hear if anyone else is using a pi in their cabs though.

 

[shanghailoz]

I'm interested from a developers point of view and would be keen to have a play with one. It doesn't say whether it has a JTAG connector or not.

I don't think I'll put a jtag port on. Will have serial though.