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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Tue Mar 12, 2019 4:49 pm 



Joined: 08 Mar 2017
Posts: 759
Hmm, so the ATI GPU CSync option is a little weird.
It sends CSync on the VGA connector HSync pin, which is okay.
It also sends pure VSync on the VSync pin though, which screws up my sync detection routine.

I'll probably create another "sync mode", but it sure is getting pretty messy now.
Ah well ..


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 13, 2019 8:33 am 



Joined: 17 Mar 2018
Posts: 29
I think that feature was created with a VGA to SCART, or VGA to BNC cable in mind.
You could always use a VGA cable where you clip off the VSYNC pin on one side :-)


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Tue Mar 19, 2019 1:24 am 


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Joined: 05 Mar 2018
Posts: 664
I still want to play, waiting on my damn GBS ordered about 7 weeks ago now...


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 20, 2019 2:21 am 



Joined: 12 Jun 2017
Posts: 103
I can't remember if there was some "reverse LPF" option implemented (or even just talked) in GBS-C at some point, for improving 2chip SFC image.
Or if I was just imaginating things... :p


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 20, 2019 11:17 am 



Joined: 08 Mar 2017
Posts: 759
There's no specialized filter for the 2Chip SFC, but the "Peaking" option in the Web UI can improve the sharpness a little.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 20, 2019 11:57 am 



Joined: 08 Mar 2017
Posts: 759
maxtherabbit wrote:
I still want to play, waiting on my damn GBS ordered about 7 weeks ago now...


Order another one. The first one may be lost somewhere.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sun Mar 24, 2019 2:23 pm 



Joined: 08 Mar 2017
Posts: 759
Okay, so I revamped the RGBHV code over the weekend.
Its task is to track the source timings, and adjust the ADC sampling clock for the various resolutions that one can expect from a connected PC or similar device.
The new logic is less trial and error, which never worked so well. Instead, it tries to determine the correct "slot" for the sampling clock.
This enables low and high resolutions, at various refresh rates. In a test, I had no problems running some common resolutions at 60, 72, 75 or 85Hz.

Also new is the ability to work with sources that have H+V Sync, but where the HSync is actually CSync.
The CRT Emudriver for AMD video cards can force this mode under Windows, but I'm sure there are other devices that use it.
This mode generally works as well as the normal RGBHV mode, but it isn't as reliable over time yet.
The added VSync pulses need to be properly separated, and there is a lot of variance on how they're shaped.
But just being able to do this now enables possible improvements to the Sync Processor that will benefit all operation modes.

Edit:
Oh, and I needed a field rate detection tool, so I added one as well.
This can pretty accurately tell the incoming refresh rate, and thus be used to make an educated guess on what the source is.
In another thread it was mentioned to use something like to detect a Super Nintendo, and sure enough, it can do that :)


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sun Mar 24, 2019 5:58 pm 



Joined: 18 Oct 2015
Posts: 659
Having the GBS identify the source based on the incoming refresh rate is quite ingenious. It can potentially automate alot of the image adjustments that you would usually do.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Mar 25, 2019 6:34 am 



Joined: 28 Nov 2018
Posts: 10
AndehX wrote:
Got myself a 3D printer this week, so I took the liberty of editing a case found on Thingiverse, to accommodate the ESP8266.

Image

Image

Image

I added a hole for a power switch, and a small hole in the side to give access to the USB port on the ESP without removing the top cover.

You can download it here:
https://drive.google.com/open?id=1xRcTA ... cnQjPfRWsi


I Love your design I was searching any Solution for one enclosure for the proyect and the yours its excellent, thank you so much. But I lieing if I saying to you it your proyect is exactly I searching. I need add a DB9 port to connect in tue RGBS lines in the PCB. I built a Cable to convert Scart Female Plug to DB9 with RGBS. It would be too much to ask that you add this port to the 3D model. I do not know anything about 3D modeling, that's why I have not tried it myself.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Mar 25, 2019 10:17 am 



Joined: 18 Oct 2015
Posts: 659
DB9 is the same shape as a standard DB15 VGA connector though....


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Mar 25, 2019 12:02 pm 



Joined: 28 Nov 2018
Posts: 10
AndehX wrote:
DB9 is the same shape as a standard DB15 VGA connector though....


I'm not so sure but I think they are of a very similar size.

https://encrypted-tbn0.gstatic.com/imag ... VbU5bONFLT


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 27, 2019 12:48 am 



Joined: 17 May 2018
Posts: 23
Folks,

I'm having sudden problems with my GBS Control setup. Suddenly there is no video on the TV, and the web console on my smartphone shows the message below, repeating over and over:

found: 238 getVideoMode: 1 input: 1
lost...

I'm using this with a Mega Drive, and the console is working fine (there is image and sound through Composite). I did no changes to the GBS since it last worked, and the connections seem to be fine. I also updated the firmware in case something got corrupted, but the problem persists. Any ideas?

Regards,


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 27, 2019 2:30 am 



Joined: 17 May 2018
Posts: 23
Nevermind. Just double-checked and found a broken wire on the SCL Line. Always check with a multimeter before posting...

rigues wrote:
Folks,

I'm having sudden problems with my GBS Control setup. Suddenly there is no video on the TV, and the web console on my smartphone shows the message below, repeating over and over:

found: 238 getVideoMode: 1 input: 1
lost...

I'm using this with a Mega Drive, and the console is working fine (there is image and sound through Composite). I did no changes to the GBS since it last worked, and the connections seem to be fine. I also updated the firmware in case something got corrupted, but the problem persists. Any ideas?

Regards,


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 27, 2019 12:29 pm 



Joined: 08 Mar 2017
Posts: 759
Hey, good that you figured it out.
Could you share details on how this connection broke?
Did the wire come off, was it an adapter that lost contact?

Knowing these things, we can figure out more reliable construction :)


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 27, 2019 3:11 pm 



Joined: 17 May 2018
Posts: 23
Seems it was an internal break. I'm using wires with pin headers (female on one end, 90º male on the other) to connect the GBS to the Wemos, and the SCL wire would make/break contact if I moved it around. Makes sense, as I moved the board to a new case a few days ago.

I mount the Wemos over the GBS with Nylon spacers, and everything goes on a "case" made with two pieces of laser-cut acrylic. Picture below:

Image

rama wrote:
Hey, good that you figured it out.
Could you share details on how this connection broke?
Did the wire come off, was it an adapter that lost contact?

Knowing these things, we can figure out more reliable construction :)


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Wed Mar 27, 2019 4:06 pm 



Joined: 08 Mar 2017
Posts: 759
Thanks,

those wires look a bit like those "100 pack" colored plug wires from China.
I often use those for prototyping, and they're probably of the cheapest possible to produce kind.

I suppose the recommendation here is to solder, not plug, all connections :)


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Fri Apr 05, 2019 9:42 am 



Joined: 26 Dec 2018
Posts: 25
Hello.
Is it possible to do something to prevent the GBS-8200 from deinterlacing the image?


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Fri Apr 05, 2019 4:30 pm 



Joined: 08 Mar 2017
Posts: 759
Hey,
sure, if you mean with gbscontrol. Simply select "Bob" deinterlacing in the web ui.

If you mean the original MCU, then no, there aren't any meaningful options for the original software.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sat Apr 06, 2019 9:21 am 



Joined: 26 Dec 2018
Posts: 25
Hi,
Thank you for your response. I would like to find out if someone sells a ready replacement system kit (in the sense of a ready-made PCB to be installed in the device) :?
I was also interested in the P6 connector on which Vcc, TxD, RxD and GND are located. Maybe with their help, it would be possible to reprogram the original chip and insert GBS Control there :?:


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sat Apr 06, 2019 12:51 pm 



Joined: 18 Oct 2015
Posts: 659
I thought about buying a few GBS boards, assembling an ESP8266 and programming it with GBScontrol, then selling them. Not sure if anyone would actually buy them though so im holding off.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sun Apr 07, 2019 5:29 am 



Joined: 26 Dec 2018
Posts: 25
I have one more question about the GBS Control. I would like to know if I can control the system from the device itself or only from the browser level?


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sun Apr 07, 2019 11:02 am 



Joined: 18 Oct 2015
Posts: 659
only from the browser currently.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sun Apr 07, 2019 3:08 pm 



Joined: 26 Dec 2018
Posts: 25
Is this controller enough for me to upload the system?
https://link.do/cOoaF
Image
Do I have to stock up on this one?
https://link.do/lCfKD
Image


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Sun Apr 07, 2019 5:24 pm 



Joined: 18 Oct 2015
Posts: 659
both of those will work just fine.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Apr 08, 2019 11:01 am 



Joined: 26 Dec 2018
Posts: 25
Just the last question about the UI. Can I replace the .HTML file with my site layout or I have to use it from the author :? (I ask because I do not like it very much and I created my own for fun).


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Apr 08, 2019 1:04 pm 



Joined: 08 Mar 2017
Posts: 759
What? No, you cannot replace my design. It is fabulous! ;p

If you absolutely must change it, then it depends on what you want to change :)
You can see the HTML source in "webui.html". There's some CSS that defines the color palette and overall look.
The layout is HTML and there's some JS that works on the CSS to show the state of things.

You can change all of this in any way you want, but it should obviously still work, so I'd leave the JS as it is.
Once everything is done, save the file, get a Linux terminal and run this script in the gbscontrol working folder:
Code:
gzip -c9 webui.html > webui_html && xxd -i webui_html > webui_html.h && rm webui_html && sed -i -e 's/unsigned char webui_html\[]/const char webui_html[] PROGMEM/' webui_html.h && sed -i -e 's/unsigned int webui_html_len/const unsigned int webui_html_len/' webui_html.h

If you're on Windows, you can use http://babun.github.io/ .

The script formats the .html and compresses it to the correct format.
After uploading the sketch, your new site will be served.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Apr 08, 2019 1:19 pm 



Joined: 26 Dec 2018
Posts: 25
If I understand correctly. I can replace this HTML to make it look less harsh and I will do it with Babun (linux not installed) :)
Below is a link from HTML
https://drive.google.com/file/d/1uwLiRF-HStGn6-02nzSb5kTRFrby3A5v/view?usp=sharing


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Apr 08, 2019 1:35 pm 



Joined: 08 Mar 2017
Posts: 759
Yep, call me impressed. This does look nice! :)

There are some functional issues, but more importantly, would you want to share your design?


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Apr 08, 2019 1:42 pm 



Joined: 26 Dec 2018
Posts: 25
rama wrote:
Yep, call me impressed. This does look nice! :)

There are some functional issues, but more importantly, would you want to share your design?

Why not. I can share it.
I just do not know where it is from.


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 Post subject: Re: GBS 8200/8220 CFW Project
PostPosted: Mon Apr 08, 2019 2:15 pm 



Joined: 19 Jul 2017
Posts: 1146
Has anyone started selling pre-modded/pre-configured GBS units, with or without cases?


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