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Dreamcast to JAMMA device :-\
Mr-Megalo:
--- Quote from: MrPoPo on January 17, 2004, 07:31:40 am ---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.
--- End quote ---
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:
--- Quote ---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)?
--- End quote ---
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.:
--- Quote from: gnateye on January 22, 2004, 01:13:51 pm ---could something like this be down with a gameshark? as far as the insert coin business?
--- End quote ---
No the "dcjamma" connector is overlaying the "insert coin" image over the DC video and keeping count/track of coins/time/stats...
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