Well I made a JAMMA adapter board, let me see if I can snap a picture.So looks like that tiny variable resistor can take care of the problem. My next question is where exactly do you inject this device in the chain of devices? Let's assume you are using an F3 with a HAS supergun going to a Scart switcher to a PVM.
Well, I emailed them to place an order. Lets see what happens.Well I made a JAMMA adapter board, let me see if I can snap a picture.So looks like that tiny variable resistor can take care of the problem. My next question is where exactly do you inject this device in the chain of devices? Let's assume you are using an F3 with a HAS supergun going to a Scart switcher to a PVM.
edit: ignore the volume control
The cable would need to be custom made (really easy), either Scart to VGA, or 8pin mini DIN to VGA. I'll see if I have parts to build one, and if I do, I could send you such cable for testing.But I don't know what cable I'd use to go from the HAS's DIN output to VGA. @RGB what are your thoughts on outputting HAS to VGA?
That's pretty much what's used in the HAS V3.0 - the EL1883 with a potentiometer to change the internal timing (it affects the H/V Sync which are later combined to form the Csync again).Since it works for RTW, then maybe someone can recreate what this circuit does in a new board that can be installed on the F3 motherboard. Doesnt seem like it would cost much to have this made. I requested 2 of these, if it goes through I can donate one to have someone reproduce it/figure out how it works and maybe a better fitment solution can be made for the F3.
It does fix the horizontal position, but remember that the potentiometer affects the VSync, too, so at some point when you adjust the horizontal position, the picture will move up/down by one or more lines as well. The vertical movement is negligible, but if you overdo it, the image will slightly shake (it's even visible on the CRT) or lose sync completely. The ideal solution would be a circuit that allows to control the HSync only.let us know how it goes. I'd be inclined to add this if it fixes the horizontal alignment issue so I don't have to re-adjust everytime I swap out the F3.
That would be wonderful - if you have the parts, just PM me with a total cost for the parts, shipping to the US and your time. I appreciate it.The cable would need to be custom made (really easy), either Scart to VGA, or 8pin mini DIN to VGA. I'll see if I have parts to build one, and if I do, I could send you such cable for testing.But I don't know what cable I'd use to go from the HAS's DIN output to VGA. @RGB what are your thoughts on outputting HAS to VGA?
I have the taito scaler so the F3 works perfectly in my cabs. I have not tried it with the HAS v3.1 + OSSC yet.That's pretty much what's used in the HAS V3.0 - the EL1883 with a potentiometer to change the internal timing (it affects the H/V Sync which are later combined to form the Csync again).
@rtw does the Taito F3 +HAS V3.0 and/or V3.1 + OSSC combo work for you? Perhaps it's some OSSC setting?
Thanks for the pic. The machine translated manual was a bit hard to understand - if you switch the device off, can you toggle between let's say an adjusted F3 signal and the "default" unadjusted sync signal?Well I made a JAMMA adapter board, let me see if I can snap a picture.So looks like that tiny variable resistor can take care of the problem. My next question is where exactly do you inject this device in the chain of devices? Let's assume you are using an F3 with a HAS supergun going to a Scart switcher to a PVM.
edit: ignore the volume control
Did you just use their "Contact Us" page to order? I assume you used English?Ok, so my order seems to have gone through, waiting on confirmation.
This!I'm wondering if we could get better results by feeding the OSSC separate H and V sync signals via the VGA connector.
Could someone with a dual-trace oscilloscope could take a look at the sync pulses on one channel and the video output on another (R, G or B, it doesn't matter which)?I agree. I have enough know-how to map out the sync signals with an oscilloscope, but I don't have the electrical engineering knowledge on what to do with building a correction circuit afterward. If I mapped out the signals and posted them on here, would that be of any use to someone that does have the necessary know-how?really the best would be to map out the F3's sync signal with a scope and compare it to a system that runs the same resolution but without sync problems. Then once you've clearly identified the problem can you work on a solution.