1. There have been major changes to the marketplace rules. Please read them again. The biggest changes involve image hosting, originality of items, and the number of infractions before ban. By dismissing this notification, you acknowledge awareness about the new guidelines.

gscartsw: automatic 8:1 SCART-RGB switch

Discussion in 'The ASSEMblergames Marketplace' started by superg, Jul 6, 2014.

  1. flamie666

    flamie666 Member

    Joined:
    Apr 18, 2016
    Messages:
    7
    Likes Received:
    0
    I tried doing that too but no change. I have a PVM and the Frememeister but didn't work with them. The PVM receives SYNC and says that is a RGB signal but no picture. I tested the Sega Genesis (Model 1) and the N64 and they all work great, no issues at all. I will try using the composite signal from the PC Engine to test, now that you mention that, with sync stripper and without.
    Thanks!
     
  2. flamie666

    flamie666 Member

    Joined:
    Apr 18, 2016
    Messages:
    7
    Likes Received:
    0
    Reading the thread, retrogamecabs mentioned that connecting the PC Engine to input 8 make it work. I can confirm this is true. I don't know why but it does. If someone have issues with the PC Engine, try this.
     
  3. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    Yeah, I can't explain it either. Every port is the same, moreover, input 8 has lowest priority.
     
  4. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    Guys, I will put the remaining units for sale on January 2nd, should be around 10am EST.
     
  5. Pudjay1

    Pudjay1 Active Member

    Joined:
    Dec 31, 2014
    Messages:
    30
    Likes Received:
    0
    Does refer to the gcscartsw lite or the regular model?

    Thanks
     
  6. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    The regular model. I've ordered a few lite units for internal testing, those won't be sold right now.
     
  7. Phatnightmares

    Phatnightmares Active Member

    Joined:
    Aug 25, 2016
    Messages:
    29
    Likes Received:
    5
    Hey superg,
    I noticed something interesting about the gscartsw. I use my OSSC as my line doubler/"upscaling" device. The gscartsw runs its output from scart into the scart input on the OSSC in my setup.
    I plugged in the PS2 scart cable into input 2 or 3 and tried to get a 480p signal, and it didn't work. I just got 480i.
    However, when I plug the PS2 scart cable into input 8, I can get a 480p signal from it. I've also heard that it's possible to get a 480p signal from input 1, but I didn't have any luck when I tried.

    Do you know why this happens? Is there any way to get a 480p signal from more that just input 8?
     
  8. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    Are you talking about sync on green?
    Shouldn't be any problem on any port, should be all the same.
     
  9. Phatnightmares

    Phatnightmares Active Member

    Joined:
    Aug 25, 2016
    Messages:
    29
    Likes Received:
    5
    Yes, that's correct.
    When I use my OSSC to change from an RGBS signal to an RGsB signal, the OSSC doesn't recognize a 480p signal when I have a scart input coming from the gscartsw on any other port that input 8.
     
  10. flamie666

    flamie666 Member

    Joined:
    Apr 18, 2016
    Messages:
    7
    Likes Received:
    0
    I have the same issue but haven't tried the 8 port for my PS2. I have a different setup: PS2 to gscartsw, then the DB15 connector to an Extron RGB 109i, then to the Framemeister. The Extron doesn't recognize the sync on green, but I thought that the Extron may have some issue. That 8 port is a mystery!
    Thanks!
     
  11. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    Now that I've thought about it more it makes perfect sense.
    Input 8 is kind of "fallback" in a sense that it's connected automatically when nothing is powered on. This is not a feature I've worked on but rather a switch design side effect.
    PC Engine: likely sync level is low and it just isn't detected anywhere but if it's in port 8 it just gets forwarded automatically.
    PS2: when it switches to 480p progressive mode it stops output sync on Sync pin (and switches to sync on green). Switch detects sync only on Sync pin. Actually I'm currently working on a small adapter device which will always output PS2 RGBS not depending on it's output mode.
     
  12. Phatnightmares

    Phatnightmares Active Member

    Joined:
    Aug 25, 2016
    Messages:
    29
    Likes Received:
    5
    So you're saying that all ports should be the same? I actually have the same issue with no display showing up when I use a component to scart passive adapter on the gscartsw inputs 1-7. Specifically, I tried using a GameCube or an Original Xbox through the component to scart pass through adapter for my set up in 480p. I had no picture show on inputs 1-7, but input 8 gives be a picture. Seems like 8 is the magic number here lol.
    When you mention that the small adapter device you're working on will have the PS2 stay on RGBS, does that mean that you'll be able to view 480p content on an RGBS signal? Also, will this device make it matter which input displays 480p?

    By the way, I can make a video and post it here for you to see exactly what I'm talking about to make like easier. :)
     
  13. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    1. all port components are exactly the same, that's what I mean;
    2. when nothing is connected - input 8 is going straight to output.
    You can use (2) to your advantage if you have non-compliant signal (low sync amplitude, no sync at all - like RGsB etc).
    What is "component to scart pass through adapter"? Is it just YUV over RGB lines? If so obviously it won't work as there is no sync detected. You can make it to work by connecting Y to S line (in component signal Y carries sync). Hope that explains.

    Yes, it's gonna be the best possible signal from PS2 with automatic detection. Which means two cases:
    1) PS2 outputs 480p - sync on green will be stripped from Green channel and provided as usual sync
    2) PS2 outputs RGBS - no changes and just automatic forwarding of RGBS
     
    hunter291 likes this.
  14. RGBoombox

    RGBoombox Member

    Joined:
    Nov 16, 2016
    Messages:
    6
    Likes Received:
    0
    Superg will there be any major revision for a 3.5 version?
     
  15. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    The latest one is v3.4, it's a proven stable revision aligned with gscartsw_jp21 and I don't plan to change anything. Two last batches were v3.4.
     
  16. RGBoombox

    RGBoombox Member

    Joined:
    Nov 16, 2016
    Messages:
    6
    Likes Received:
    0
    Awesome! I'm gonna setup a reminder for Jan 2nd. Thanks!
     
  17. nopanik38

    nopanik38 Newly Registered

    Joined:
    Dec 27, 2016
    Messages:
    2
    Likes Received:
    0
    Hello superg and everyone,

    I wanted to know if gscartw_lite's specs were defined. Will the only difference be the VGA removal?

    Also second question since i'm a bit new to rgb and video signal: I understand composite signal wouldn't be detected when passed through an RCA to SCART adapter as there is no sync line per se. However superg said that the gscartw worked 'only' on non modded consoles.
    Hence my question : do one have to buy new SCART cables from eg retrogamingcables.co.uk , replacing the RCA ones (red white yellow) to ensure proper signal detection by the switch without any hardware mod ?

    EDIT: I am using unmodded PAL consoles with their official french cables (mostly RCA) but I actually don't know if the signal is composite or component.

    Hope the question makes sense.

    Anyway thanks for all and merry xmas :)
     
    Last edited: Dec 29, 2016
  18. superg

    superg Site Supporter 2013,2014,2015. Tape Drive Donor.

    Joined:
    May 30, 2012
    Messages:
    1,041
    Likes Received:
    345
    gscartsw_lite: I will announce it soon.

    Old switch versions didn't support sync-based detection. Current switch version supports it. Which means that you can use it as composite switch given that you use those RCA->SCART input/output adapters. But there is no point in using composite and my switch, so yes, you will have to get proper RGB cables. So simply it's not a signal detection issue, it's quality issue.
    Modded consoles warning, they work mostly but I need this disclaimer to protect myself and not look into every faulty mod.
     
    Jesabs and nopanik38 like this.
  19. nopanik38

    nopanik38 Newly Registered

    Joined:
    Dec 27, 2016
    Messages:
    2
    Likes Received:
    0
    Awesome, thanks for the fast answer !
     
  20. hardyhell

    hardyhell Newly Registered

    Joined:
    Jan 2, 2017
    Messages:
    1
    Likes Received:
    0
    Hello,

    Where exactly will you put them at sale?
    it is monday the 2nd.

    i would like to order one please.

    thank you
     
sonicdude10
Draft saved Draft deleted
Insert every image as a...
  1.  0%

Share This Page