November 11, 2017 at 2:35 PM #17061
Great! I am confident you will fix it. My F3 boards (2 of them) didn’t have picture all though, even with maximum v sync.
If you fix it then you can try a Capcom board with OSSC taking signal from a PVM line out.
Thank you MarqsNovember 15, 2017 at 10:23 AM #17213
Exciting news indeed! Thank you for looking into it marqs.November 25, 2017 at 7:48 PM #17530
I checked the sync signal via scope and didn’t notice anything extraordinary besides F3 using odd-odd field signaling like many other Taito boards. As the digitizer chip in OSSC has trouble accepting such signaling via analog sync inputs, I hooked up RGB+csync from Supergun to AV3 (csync -> VGA hsync pin). Then I switched to AV3 RGBS mode and set H-PLL pre and post coast to 4, after which OSSC happily locked to the signal.
I wonder if there are some differences between boards (or even games) as I didn’t manage to get my Framemeister to work well with F3. I had to disable framelock to get it to sync at all, but even then vertical jitter was bad enough to make any games unplayable. I recall FM getting along with odd-odd field signals with some caveats.November 25, 2017 at 9:17 PM #17532
Huh, that’s really interesting Marqs. I’m surprised-I’ve tried three different Taito F3 boards on my setup with identical results-no sync with the OSSC, perfect effortless sync with the Framemeister. Maybe the SuperGun or SCART cable I’m using is a factor. Did you find that a sync stripper was necessary for an OSSC sync?November 27, 2017 at 1:27 AM #17575
Can you please tell the pinout of a vga male connector?
If I understand correctly we need a cable which will be female scart—> male vga.November 27, 2017 at 5:12 PM #17589
Yes, it’s just a passthru cable with following pinout (not including grounds which are available on many pins)
SCART (F) VGA (M) R pin 15 pin 1 G pin 11 pin 2 B pin 7 pin 3 S pin 20 pin 13November 27, 2017 at 11:17 PM #17600
I’ll see if I can land one of those SCART to VGA cables and try the Taito F3 again. Fingers crossed…November 28, 2017 at 9:15 PM #17642
I will try to just swap sync on the Extron input and output. OSSC may play RGBS via scart?November 30, 2017 at 1:03 AM #17670
@vasilas432: I didn’t understand your question. If you can get RGB + (TTL-level) csync and feed it to VGA input on OSSC, then you should be fine.November 30, 2017 at 1:11 AM #17671
I am looking for a vga cable to cut and mod it with a scart. I think I can do it. I will update when ready
Thanks marqsNovember 30, 2017 at 7:14 AM #17673
@vasilas432 I had a extra 5-BNC to VGA cable to put Extron-out into the OSSC. If you were testing for sync drops, I still got sync drops.November 30, 2017 at 5:22 PM #17691
I have received a new OSSC after my first one died and I am checking for sync drops with Capcom. I will tell you what is going on in a little while.December 1, 2017 at 9:09 AM #17697
I confirm that F3 is working now with OSSC like a charm! Thank you marqs
I tested one F3 board, but more will followDecember 1, 2017 at 5:02 PM #17705
Three questions I have are that setting H-PLL pre and post coast to 4 or leave them to default has no difference, crystal clear image in bothe cases.
Does everything play through the new cable via AV3 input? I tried a Capcom board and plays normaly. I didn’t try anything else.
Is it better for the new cable to be the most part a good scart cable (with just a male VGA connector on one end) or the most part a vga cable?(very short scart cable with a female VGA connector so a usual VGA male to male cable can be connected)December 5, 2017 at 11:22 PM #17812
Darius Gaiden plays perfectly with a different F3 motherboard. Bubble Memories plays perfectly as well using one of the above motherboards
H-PLL pre and post coast need to be on 4 as Marqs said. Audio comes in from A3 and comes out through HDMI
Thank you again Marqs. Those F3 games look awesome through OSSC to my LG OLED B7.
You must be logged in to reply to this topic.