Dreamcast to JAMMA device :-\

[Mr-Megalo]

Howdy Chaps and Chapesses,

I just got me a Dreamcast JAMMA device similar to the MGCD thingymabob so I can use DC and pay for credits through the coin mech etc. All seems to be well, but in the manual it says that pins 27, 28, E and F (the bottom 4 grounds) have to be disconnected as they are reserved for buttons 6&7 for 1p and 2p, so my question is this, does this mean i have to bastardize my control panel wiring and edge connector wiring to accomodate this ? I've heard of a similar device for the PSOne/PS2 but again its non standard jamma, but I cant find anything online about either of em or any wiring changes.

My cab is a CPS2 6 button street fighter setup (top 3 buttons jamma buttons 1,2 and 3, bottom 3 buttons connected to CPS wiring loom for kicks 1,2 and 3) this is the reason I never use a Neo MVS kit on my cab and from what I understand Im gonna have to make some

[Dave_K.]

Pretty much all games which use more buttons than standard Jamma have to do this...so I don't see it as strange to do it for the DC/Jamma setup.  I forget, but doesn't JAMMA+ support more than 3 buttons per player?

I'm guessing your concern is keeping the cab original because you still use the original game inside it?  Can't you just hookup a special wiring harness for the extra buttons to the DC/Jamma connector?  Like maybe interface both through a standard molex connector so you can easily switch back the forth?

[Mr-Megalo]

I'm guessing your concern is keeping the cab original because you still use the original game inside it?

[MrPoPo]

Hi !!

I have a question about this Dreamcast to JAMMA converter
The Dreamcast outputs a 640x480 interlaced resolution and normally it flickers on a 15KHz arcade monitor.
If you are using this type of monitors, can you tell me how fine is the image on it ??
I have a Dreamcast connected to my arcade monitor using an RGB cable and it flickers.


(sorry for the intermission and my poor english)

[Dave_K.]

I have a Dreamcast connected to my arcade monitor using an RGB cable and it flickers.

There are a couple older capcom fighting games which are interlaced games (they flicker).  But its only a couple games that do this.  If you are connected to an arcade monitor (through a hacked VGA box or hacked scart cable, then it will look exactly the same as through this DC/Jamma box.

[Mr-Megalo]

Hi !!

I have a question about this Dreamcast to JAMMA converter
The Dreamcast outputs a 640x480 interlaced resolution and normally it flickers on a 15KHz arcade monitor.
If you are using this type of monitors, can you tell me how fine is the image on it ??
I have a Dreamcast connected to my arcade monitor using an RGB cable and it flickers.

I've had a good look around this board, it incorporates a lm1881n chip for sync, screen seemed to be fine but my machine has an auto set feature on the scan convertor which probably helped out. The flckering your describing to me sounds like its down to a bad ground, some people bridge there videoground to a normal ground on there fingerboards, others dont need to.

[Grasshopper]

I'm really intrigued by this device. If you attach it to your Dreamcast and put them both in a JAMMA cabinet then is the end result exactly the same as a Sega Naomi cabinet (which I understand is based on Dreamcast hardware)?

If the answer is yes, then do you need special versions of Dreamcast games to fully recreate the arcade experience? Presumably most Dreamcast games don't know about things such as coin input unless they contain hidden code for dealing with coin input etc. that is only activated when one of these convertors is detected.

Can someone explain.

Thanks

[Mr-Megalo]

I'm really intrigued by this device. If you attach it to your Dreamcast and put them both in a JAMMA cabinet then is the end result exactly the same as a Sega Naomi cabinet (which I understand is based on Dreamcast hardware)?

the answer to that is...kinda, Naomi has more memory then Dreamcast, Atomiswave is basically a Dreamcast on a jamma board tho.
Rightyho, back to this unit ,for a start this unit IS NOT plug and play, your jamma harness does need altering and even then you still have some swapping to do if your using a 6 button setup (button 3 on DC/Jamma board is low kick but is placed where hard punch on a 6 button setup is ie jamma button 3) 2ndly, it has its own "little bios" so to speak, you can go into a menu and set up coins, credits, code for the game and the speed ,difficulty etc. once that has been done, it loads the Dreamcast game as it normally would on a  on a tv, but flashes WAITING on screen, once the game has finished loading it automatically moves its way through the options and configs the time, speed, difficulty etc and then exits to attract screen saying press start as any normal DC game would, but the device itself says "insert Coin" and doesnt let you use the start button unless a credit is present.

This same unit can also be used for PSOne/PS2

[gnateye]

could something like this be down with a gameshark? as  far as the insert coin business?

[Dave_K.]

could something like this be down with a gameshark? as  far as the insert coin business?

No the "dcjamma" connector is overlaying the "insert coin" image over the DC video and keeping count/track of coins/time/stats...

[gnateye]

oh, it actually sounds kinda lame, like those old nintendo arcade games that basically did the same thing, timed console playing for quarters. i was hoping that it was unlocking some kind of"arcade code" or something. the other dc>jamma chip that looked interesting is the gun board, it is happs guns interfaced to  chip and to the DC, but that may be doable on your own

[Makanic]

Hi all Have been searching for this Kind of Adaptor for ages ..No one here In Australia is willing to give me any help
Who makes these Boards & where do they come from?
I have got one from ebay but the guy l got it from Knows
Nothing about it (no Dip switch settings Nothing)
iT was set up for Crazy Taxi(driving game)
& it loaded up some kind of driving menu..
The Board has Only One word on it and it says "SUPER"
& thats about it.. no other markings..nothin..
Anyone with any help  of info  ?
Thanks in advance.........