Supernova incompatability issue?

pixeljunkie

pixeljunkie

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I have now bought 2 older Atari PCBs, one being Guardians of the Hood, and the latest one is Pitfighter. They both give me identical B&W video??? Is it possible there is an issue with these boards and the Supernova? Just too weird to have identical problems on boards made by the same company. Anyone have any early 90's PCBs made by Atari that work on their Supernova?

Very frustrated
 
S

SuperGunGuru

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Well, I have a Pit Fighter that has a similar problem as yours does. I use the HGA from Great Western trading and it has trouble working with some games. Pit Fighter's graphics flash randomly between color and b&w. My Battletoads PCB has a wavy picture, but both these boards work fine in my jamma cab. Maybe just an issue with the RGB to NTSC conversion?
 
NEOGEOman

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I see this problem a lot with low-quality chroma encoders, they're choking on the over-bright RGB signals and the colour encoding just shuts down rather than try and cope.
 
pixeljunkie

pixeljunkie

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i wonder....is there anyway to fix it? Or am I out of luck? [I don't have a cab...only my trusty Supernova]
 
NGT

NGT

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would turning down the 3 colors help? I don't know....but if over bright colors cause it to shut down or put out b and w...maybe turning down the color output will get the board to be able to push the lower brightness without shutting down?

just a thought...

you can see the 3 dials on the video encoder....

If this won't work, maybe someone could let him know,lol...as I am just guessing....the oldest game I have is Crime City (1989) and that game works fine...



Dscn5434.jpg
 
norton9478

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THose atari boards are known to cause problems with a Jrok.... I expect the nova to be the same....


I have a similar problem with my Nintendo Super System and my JROK...

THe boot screen is color but then when the game loads, it switches between BW and off color.
 
Bishamon

Bishamon

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I had a similar problem with my Seibu SPI games, which are apparently known for outputting a tough video signal (they were flashing color for a second and then going to black and white with some garbled graphics, and some TVs wouldn't detect the signal at all and just displayed a blue screen). I now use my SuperNova hooked via S-Video to a Hauppauge WinTV card and running a program called D-Scaler which seems to be able to display anything correctly. It's wonderful!
 
pixeljunkie

pixeljunkie

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I have an AverTV card...I think I'll try it tonight on there via the S-Video. I'll let ya' know if I have any success.
 
Bishamon

Bishamon

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pixeljunkie said:
I have an AverTV card...I think I'll try it tonight on there via the S-Video. I'll let ya' know if I have any success.
Click to expand...

It's not just the card, but the software that makes the difference. Using the software that came with the Hauppauge card it still wouldn't display correctly.

Head over to www.dscaler.com and make sure you're TV card is supported, then download the latest version and give it a try. The software is amazing in its depth, and it's freeware.
 
pixeljunkie

pixeljunkie

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thankfully my card is supported by that program. [very cool BTW] it still acts a little weird though, color kinda goes crazy in areas. Is there any way to tone down the video signal??? So something like the Supernova could handle it?
 
Bishamon

Bishamon

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pixeljunkie said:
thankfully my card is supported by that program. [very cool BTW] it still acts a little weird though, color kinda goes crazy in areas. Is there any way to tone down the video signal??? So something like the Supernova could handle it?
Click to expand...

Try some of the adjustments in the DScaler software and see if it can be improved.

The best solution would be to get an XRGB-2 and bypass the RGB-to-NTSC board in the SuperNova.
 
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