shmups.system11.org

Shmups Forum
 
* FAQ    * Search
 * Register  * Login 
It is currently Sat Dec 15, 2018 10:33 pm View unanswered posts
View active topics



Post new topic Reply to topic  [ 108 posts ]  Go to page Previous  1, 2, 3, 4
Author Message
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Tue Mar 06, 2018 2:40 am 



Joined: 04 Jun 2015
Posts: 182
mimix1004 wrote:
hello, i have a solution for the french N64 with an LM1881 and a teensy 3.6.

are you interested about my solution?


Yes, I'd love to know more about your solution, mimix1004!


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Wed Mar 07, 2018 2:43 pm 



Joined: 13 Nov 2017
Posts: 14
i have recieved my pcb, i have some problems with my extron, when i'll solve them i'll post a tutorial.


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Fri Mar 16, 2018 8:51 pm 



Joined: 13 Nov 2017
Posts: 14
if you haven't seen on another topic....

my solution but only for N64 and PCE:

Image
Image
Image
Image
Image
Image


All is done ! now i'll send the 2nd prototype to Lewolfeur and he will test on his Neogeo !


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Sat Mar 17, 2018 12:50 am 



Joined: 13 Jul 2016
Posts: 64
This is brilliant! Let me know if you need more testing, I could do it and I live next to the french border in Roses (Girona).


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Tue Mar 27, 2018 8:16 pm 



Joined: 13 Nov 2017
Posts: 14
you can found my own solution there:
http://www.nicekits.fr/perso/SYNCH-CORRECTOR-FOR-IKEGAMI-1990R.zip

you'll find source files with programs, schematic and pcb for eagle cad soft, a pinout and functionnal diagram and two example of use with BNC or SCART.

Image

Image

Image


my solution works for me but all of components are used at there maximum of speed.
and sometime, on white screen one PCE you can have jumps of screen on the PCE, but that depend of the extron or the reactivity of NAND includes inside.
YOU MUST use really really fast NAND. and YOU MUST use X2 capacitor for the LM1881.

if someone want to test, i have 8 blank PCB in stock


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Thu Mar 29, 2018 9:07 pm 


User avatar

Joined: 15 Oct 2015
Posts: 103
Location: Salem OR
How much would be willing to sell one of these already made? I'm having sync issues with my setup
_________________
PC,PS4>DENONX4300H>LG OLED65C7
DC,Xbox,SS,GEN32XCD,SNES,N64>Samsung 55Q8FN
3DO,360,Wii>SONY 34XBR910


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Thu Mar 29, 2018 9:52 pm 



Joined: 13 Nov 2017
Posts: 14
i cand sen you the critical component (PCB + super fast nands + X2 Capacitors) for 8€+shipping cost.
you will add ~40/50$ of components, that depends where you come from.

but for the moment i have not enough time to produce more fully assembled converters.


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Mon Apr 23, 2018 12:02 pm 



Joined: 13 Jul 2016
Posts: 64
mimix1004 wrote:
i cand sen you the critical component (PCB + super fast nands + X2 Capacitors) for 8€+shipping cost.
you will add ~40/50$ of components, that depends where you come from.

but for the moment i have not enough time to produce more fully assembled converters.



I would be interested in one as well!


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Mon Jul 16, 2018 9:57 pm 



Joined: 13 Jul 2016
Posts: 64
Sorry for double posting, but has anyone found a solution to this issue?


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Tue Oct 09, 2018 11:03 pm 



Joined: 10 Jul 2015
Posts: 8
Can anyone create a final Sync solution for BVM-A series to synchronize everything that BVM-D series does?

I have thought that the way forward in the Sync can be through a variable amplification or resistance of many Ohms. Able to vary the totality of Sync signal values to be adequate. Someone with knowledge should create this and, if possible, merge it with a RGBHV to RGBS converter. Small in size, functional, and to be connected only to the SYNC BNC input of BKM-68X.

I can not understand how the best monitor in the world in its revised version, can not even have a definitive Sync device created by the enthusiastic community lover of BVM. We're going to get a full Sync in BVM-A. I call on all people to help here.


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Sun Oct 14, 2018 7:17 pm 



Joined: 13 Jul 2016
Posts: 64
RGB-A wrote:
Can anyone create a final Sync solution for BVM-A series to synchronize everything that BVM-D series does?

I have thought that the way forward in the Sync can be through a variable amplification or resistance of many Ohms. Able to vary the totality of Sync signal values to be adequate. Someone with knowledge should create this and, if possible, merge it with a RGBHV to RGBS converter. Small in size, functional, and to be connected only to the SYNC BNC input of BKM-68X.

I can not understand how the best monitor in the world in its revised version, can not even have a definitive Sync device created by the enthusiastic community lover of BVM. We're going to get a full Sync in BVM-A. I call on all people to help here.



Indeed, we need a solution soon, I can put my money where my mouth is, also, I could assess the possibility to send a BMK-68x card to someone attempting to engineer a fix.


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Mon Oct 15, 2018 5:34 am 



Joined: 27 Sep 2018
Posts: 93
RGB-A wrote:
Can anyone create a final Sync solution for BVM-A series to synchronize everything that BVM-D series does?

Looking like the SERR switch on an Extron RGB 160xi (or any newer "xi" Extron box like the RGB 580xi?) will take care of this issue. These Extron boxes should be able to take any old sync too, including CVBS.

More info:
viewtopic.php?p=1266819#p1266819


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Mon Oct 15, 2018 10:04 am 



Joined: 04 Jun 2015
Posts: 182
energizerfellow‌ wrote:
RGB-A wrote:
Can anyone create a final Sync solution for BVM-A series to synchronize everything that BVM-D series does?

Looking like the SERR switch on an Extron RGB 160xi (or any newer "xi" Extron box like the RGB 580xi?) will take care of this issue. These Extron boxes should be able to take any old sync too, including CVBS.

More info:
viewtopic.php?p=1266819#p1266819


From memory, it fixed the skew issue with the Neo Geo AES (although it introduced a bit of interference, might have been a bad cable??) but it did not fix the issue with PAL consoles like the Mega Drive.


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Mon Oct 15, 2018 3:47 pm 



Joined: 27 Sep 2018
Posts: 93
xga wrote:
From memory, it fixed the skew issue with the Neo Geo AES (although it introduced a bit of interference, might have been a bad cable??) but it did not fix the issue with PAL consoles like the Mega Drive.

It appears French N64s and Sega PAL consoles on an A-series Sony BVM are the only things that the Extron RGB xi boxes can't fix? The 100/200-series Extron RGB xi boxes have an internal jumper to clamp sync timing to either the back porch or the tip of the sync pulse, which might make a difference, but I don't think anybody has tested this yet?

Renesas has a ISL59885-based sample circuit that's ostensibly deigned to fix broken H sync in SoG, but would appear to be exactly what's needed here. If you read the doc, it looks like you can simplify the circuit pretty extensively if you don't need SoG or HD support and use an EL1883 instead.

https://www.intersil.com/content/dam/In ... /tb476.pdf


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Mon Oct 15, 2018 11:42 pm 



Joined: 04 Jun 2015
Posts: 182
energizerfellow‌ wrote:
xga wrote:
From memory, it fixed the skew issue with the Neo Geo AES (although it introduced a bit of interference, might have been a bad cable??) but it did not fix the issue with PAL consoles like the Mega Drive.

It appears French N64s and Sega PAL consoles on an A-series Sony BVM are the only things that the Extron RGB xi boxes can't fix? The 100/200-series Extron RGB xi boxes have an internal jumper to clamp sync timing to either the back porch or the tip of the sync pulse, which might make a difference, but I don't think anybody has tested this yet?

Renesas has a ISL59885-based sample circuit that's ostensibly deigned to fix broken H sync in SoG, but would appear to be exactly what's needed here. If you read the doc, it looks like you can simplify the circuit pretty extensively if you don't need SoG or HD support and use an EL1883 instead.

https://www.intersil.com/content/dam/In ... /tb476.pdf


I tested a EL1883 device here - https://shmups.system11.org/viewtopic.php?p=1250642#p1250642.

I might be able to test your Extron clamp sync theory this coming weekend.


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Tue Oct 16, 2018 12:07 am 



Joined: 27 Sep 2018
Posts: 93
xga wrote:

That Retrotek SBV1 is just a simple single-chip sync separator circuit. The one I linked breaks out the sync, regenerates some missing H sync data, then mixes it back together. It's a lot more complex circuit.

xga wrote:
I might be able to test your Extron clamp sync theory this coming weekend.

Nice. You ever test the sync input handling to see if the Extron boxes gradefully handle CVBS or luma as a sync source?


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Mon Nov 19, 2018 11:33 pm 



Joined: 13 Jul 2016
Posts: 64
xga wrote:

I tested a EL1883 device here - https://shmups.system11.org/viewtopic.php?p=1250642#p1250642.

I might be able to test your Extron clamp sync theory this coming weekend.


Did you manage to test it? :)


Top
 Offline Profile  
 
 Post subject: Re: BVM-A20F1M Sega consoles Sync problems
PostPosted: Wed Nov 21, 2018 10:41 pm 



Joined: 04 Jun 2015
Posts: 182
PeterWar wrote:
xga wrote:

I tested a EL1883 device here - https://shmups.system11.org/viewtopic.php?p=1250642#p1250642.

I might be able to test your Extron clamp sync theory this coming weekend.


Did you manage to test it? :)


No, not yet. I'll reply here when I do.


Top
 Offline Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 108 posts ]  Go to page Previous  1, 2, 3, 4

All times are UTC


Who is online

Users browsing this forum: Dochartaigh, FinalBaton, Google [Bot], Overkill, Ryoandr, strayan, thebeautifulones and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Space Pilot 3K template by Jakob Persson
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group