Having an issue with one board on my Supergun. Does anyone have any idea what would cause this on Green: Every other board I connect outputs video 100% okay
Then check the video ROMs... or find someone nearby who can test it in their cab ;-) Are you getting +5V on the board? and (less important) +12V?
The 2nd most significant green bit (D2) is being ignored (disconnected) and D3 isn't off when it should be... The white gradient obviously shouldn't be green, but past 8 it's not turning on like it should. All 3 should gradient much better but clearly some values below 8 are visible like they should be. Hmm, this is a little confusing! Some thing(s) is(are) wrong between palette RAM, pixel latch and video DAC. I think green D2 and D3 are shorted on the DAC, the current loss may also contribute to the poor gradients of red and blue.
Turns out it was something a lot simpler... Overdrive. A 100 Ohm resistor on the Green video line has fixed it :redface:. Thanks for taking a stab at it though guys :thumbsup:
Yeah, common when you're using a "supergun". That's why I asked if it worked fine in a cab ;-) Does yours not have colour pots? Parris: I've been helping a friend with some stuff, generally exhausted and so haven't really been on the forums lately ;-)
I have to say, it is a piece of shite. It has at least inspired me to just build my own. I started it last night.
Lower voltage I assume... The Vogatek is laggy as hell on the controllers too, they appear to run through a decoder on the one I've got (MkIII I think). Weird things happen if you only have one controller plugged in as well
They should have a decoder to run MD pads at least - well, I always thought they must have been based on Chad Gray's circuit, anyway. Interesting that you noticed lag, though!
Aye, I figured that's what the 2 ICs were They really aren't practical. Things you don't think of till you have it - like it's a pain in the arse to connect it to a board without a jamma harness extension, in fact i'm pretty sure it would quite easily break the fingerboard off a PCB with any pressure applied (pressure like say connecting the atx plug)... and no mounting holes :banghead: sorry this is fast becoming a vogatek bashing thread
I quite liked the Vogatek I had (MKI) but you're right about potential damage it could cause, I had to force it so hard onto the PCB I thought over time it would end up stripping the metal from the connectors.
Was the PCB a pirate / copy board? The voltages that a arcade board gives is much higher then what the SCART TV can handle. The vogatek is a pile of badly designed crap, a bit more thought like having a Jamma harness, better video handling, a way to add more buttons and an audio attenuator would improve it big time.
? Is your vogatek wired wrong or something? Mine uses genesis ports for the basic controls and has zero lag. Here's vids of random crap being played on it http://www.youtube.com/watch?v=DWGqsGE-Z0o&feature=channel_page http://www.youtube.com/watch?v=uKhClvHEm_o&feature=channel_page http://www.youtube.com/watch?v=87G6sBUFfn8&feature=channel_page I think anyone will agree that ketsui would be very non-playable if lag was present no mounting holes yeah that's kinda annoying. I attached pcb feet using the two small holes on either side of the atx power port. and just used pcb feet in other places (you can use glue but I just have them freely under it for support) yes and it would also drive up the cost. You can just mod it to do all of the above. I guess I don't have to worry about the video handling from it since I'm using a rgb to ntsc circuit. And my rgb to ntsc board has pots built right onto it
Wired wrong? I haven't rewired the PCB, no, and with a standard Genesis/MD stick connected. As for mods, those add costs just the same, and hassle as well. An audio attenuator was the first thing I bought after the supergun almost right away Have to agree with Jamtex. Buying one of these then finding you would have been as well building it from scratch isn't exactly cost effective either...
