Naomi to RGB Scart

Beaps

Beaps

Kabuki Klasher
Joined
Oct 8, 2008
Posts
124
Hi All,

I am trying to connect my Naomi system to my BVM via RGB Scart. I have flicked the jumper to set it to 15khz but I getting like a vibrating interlaced image.

Here is how I got it setup



When I go into test mode I get this



Is there another dip switch I need to switch. Currently I have 1UP the other 3DOWN.

Any help would be appreciated
 
B

Beharius

Overtop Pathfinder
10 Year Member
Joined
May 17, 2011
Posts
105
I also noticed that you are connecting both sync signals(H&V) to the pin20, it's incorrect. You can use the composite sync line on the jamma connector instead or Kenzei (beharbros.com) to combine those separate sync signals into one Csync compatible with the Scart.

Naomi (VGA) - Kenzei - Scart (still need the resistors though)

Naomi (through Sega I/O jamma) - Scart with resistors
 
Last edited:
skate323k137

skate323k137

Professional College Dropout
10 Year Member
Joined
Jan 7, 2013
Posts
4,201
I use a capcom IO, run the video from the dsub to that, then jamma to scart with 220 ohm resistors. Works perfect, and there's a switch inside the capcom I/O that handles the sync.
 
Beaps

Beaps

Kabuki Klasher
Joined
Oct 8, 2008
Posts
124
I think I got it sussed. I am using a regular ATX power supply and I don't think it's powerful enough
 
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Beharius

Overtop Pathfinder
10 Year Member
Joined
May 17, 2011
Posts
105
Yes. Your issue is a sync problem, you either need to wire it from the jamma connector with resistors or use a sync combiner (like Kenzei) + resistors in the scart cable
 
Atro

Atro

Who?,
20 Year Member
Joined
Jan 30, 2002
Posts
9,213
the resistor value used on the sync line may be higher than 220 ohms if you're sending +12V instead of +5V.
 
kuze

kuze

Sultan of Slugs
10 Year Member
Joined
Apr 20, 2013
Posts
2,553
Beaps said:
It's only 200w, is that powerful enough
Click to expand...

I run a 175w atx PSU and haven't had any issues powering supergun, capcom io, Naomi, netdimm and raspberry pi off of it. Older PSUs from the era seem to work best.
 
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