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Old 06 August 2018, 23:48   #81
jbilander
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Originally Posted by Krashan View Post
True. Having a framebuffer, Indi can produce 1280×1024 mode, which is deinterlaced and looks awesome on 17"/19" displays having exactly this native resolution.

Ok, thanks. That is good to know I'm waiting for the vampire v4 standalone (for more serious wb stuff) so I think I won't go down the Indivision mk2 route on this machine. Only use it for casual gaming, but it would have been nice to have classic wb in at least 640x512 deinterlaced. Maybe I will look into getting a cheap GBS-8220 for deinterlacing. Maybe a bit off topic but does anyone know if that board has pass-through possibilities? I'm thinking 640x512 interlaced could be handled by GBS-8220 and all other progressive modes just passed through untouched (15KHz 50Hz) to the monitor through the one and same vga cable.
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Old 07 August 2018, 10:32   #82
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Don't use the GBS-8220. It looks as if you've pulled a nylon stocking over your monitor.
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Old 07 August 2018, 22:13   #83
jbilander
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Originally Posted by idrougge View Post
Don't use the GBS-8220. It looks as if you've pulled a nylon stocking over your monitor.

Is the GBS-8220 really that bad? I watched this clip and I think it looks okay for some easier wb stuff in 640x512 laced.

9:09 into the clip...

[ Show youtube player ]

However I do not know if it is possible to put it in bypass mode and just pass through the signal as is. That would be great for progressive modes since the Benq monitor can handle those pretty good by itself and I don't wanna introduce unnecessary lag or 50Hz->60Hz conversion. Games (often low res) looks great on this monitor by using a simple RGB->Vga adapter (but no scanlines option of course).
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Old 07 August 2018, 23:04   #84
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I will try for sure when I get home from work later but I do not believe it will accept a 31KHz signal through the RGBS port. The VGA connector on the GBS is a passthrough port I believe though.
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Old 08 August 2018, 03:43   #85
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If you want to improve the GBS picture, start looking here: https://github.com/ramapcsx2/gbs-control
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Old 08 August 2018, 10:53   #86
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Originally Posted by graffias79 View Post
I will try for sure when I get home from work later but I do not believe it will accept a 31KHz signal through the RGBS port. The VGA connector on the GBS is a passthrough port I believe though.

Great if you can try that out. I believe the RGBS header has to be used when connecting the Amiga?. The Vga input is for RGBHV if I understand it correctly? Maybe it's me mixing up terms here (progressive and non-laced modes) but what I'm after is using gbs-8220 for PAL High res 640x512 laced when doing simple wb stuff (deinterlaced/flicker-fixed by GBS-8220) and when running games and demos switch over to pass-through effectively being the same as using simple RGB->Vga adapter to the monitor since Benq BL912 can handle 15kHz PAL input signal well for non-interlaced modes.

Last edited by jbilander; 08 August 2018 at 11:19.
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Old 08 August 2018, 11:10   #87
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Originally Posted by dalek View Post
If you want to improve the GBS picture, start looking here: https://github.com/ramapcsx2/gbs-control

Thanks, will take a look... sorry for hijacking the thread.
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Old 08 August 2018, 17:06   #88
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Originally Posted by jbilander View Post
Great if you can try that out. I believe the RGBS header has to be used when connecting the Amiga?. The Vga input is for RGBHV if I understand it correctly? Maybe it's me mixing up terms here (progressive and non-laced modes) but what I'm after is using gbs-8220 for PAL High res 640x512 laced when doing simple wb stuff (deinterlaced/flicker-fixed by GBS-8220) and when running games and demos switch over to pass-through effectively being the same as using simple RGB->Vga adapter to the monitor since Benq BL912 can handle 15kHz PAL input signal well for non-interlaced modes.
Gah! I forgot last night. I will remember tonight! Yes RGBS for a 15KHz signal. I've tried feeding into the VGA port using my C= RGB to VGA adapter and got no love. I guess it doesn't expect to see 15KHz with separate H/V sync.
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Old 09 August 2018, 00:59   #89
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Originally Posted by graffias79 View Post
Gah! I forgot last night. I will remember tonight! Yes RGBS for a 15KHz signal. I've tried feeding into the VGA port using my C= RGB to VGA adapter and got no love. I guess it doesn't expect to see 15KHz with separate H/V sync.

No worries. From what I've read the Vga input with RGBHV is reserved for 30.5-32.5 KHz signals which would explain why no joy with the Amigas 15 KHz signal even though you connect pin 11 (HSYNC) and pin 12 (VSYNC) from Amigas 23-pin out. I don't know if it will take 15KHz RGBS on the Vga input port, in that case I think Amigas pin 10 should be connected to vga pin 13 (HSYNC or CSYNC). Also recommended to add a 680 ohm resistor on csync line.
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Old 09 August 2018, 06:05   #90
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Ok, I tried Amiga 15KHz through RGBS. That worked of course. Then I used a C= VGA adapter to try 15 KHz over the VGA port. I only got corrupted video (similar to what doublescan modes look like on a 1084 monitor). Then I tried Multiscan Productivity through the VGA port and it was also corrupted.
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Old 10 August 2018, 10:27   #91
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Ok, thanks for the testing, and I guess no passthrough on rgbs header on stock firmware? I found this forum where they talk about it just being achieved, maybe I'll buy one of these boards and give it a try with custom firmware...

https://shmups.system11.org/viewtopi...28409#p1328409
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Old 10 August 2018, 10:58   #92
nexus
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the GBS82xx can look decent for the price factor if you intend on doing the required modding to it which the parts to do that are cheap or free if laying around
many vids and sites on it
ofc you can get a OSSC cheaper to if you built it yourself
with using monitors you can also build your own and use a logic board that is 15khz compatible they sell shit tons on ebay and you can even have them program modes you want or do that yourself if you have the know how and tools
just read the datasheet on the chipset used see if they are able to display 15khz

Last edited by nexus; 10 August 2018 at 11:07.
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Old 17 August 2018, 04:36   #93
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can someone call setting for the Amiga and x5 mode ossc work perfectly?
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Old 17 August 2018, 07:26   #94
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can someone call setting for the Amiga and x5 mode ossc work perfectly?
I have three different settings for three different monitors. I don't think any of them are 5x though (5x256 lines is >1080p so it is too high, but 4x is perfect).
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Old 13 November 2018, 03:36   #95
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I finished a DIY build of the OSSC with an Amiga frame of mind for it. The 8200 just didn't cut it for me beyond basic gaming. This thing hits the sweet spot for both gaming and general WB usage.

Thank you jarp for shortening the learning curve for finding optimized settings.
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