OSSC (DIY video digitizer & scandoubler)

[Sid]

Any indication as to when the audio add-on will be offered as an option? Since I'll be running it to a Pioneer (with it's decent, but more importantly, front facing speakers), it's a fair consideration for me.

[Elrinth]

my famicom audio is very scrappy to begin with, maybe if it's somehow cleaned up (if possible) it will work correctly in the dvi+L/R -> hdmi unit.

[rtw]

my famicom audio is very scrappy to begin with, maybe if it's somehow cleaned up (if possible) it will work correctly in the dvi+L/R -> hdmi unit.

To rule out the combiner, pull the DVI from the OSSC and connect the 3.5" jack to your phone while playing some songs

[borti4938]

Any indication as to when the audio add-on will be offered as an option?

http://shmups.system11.org/viewtopic.ph ... 6#p1205236

[Elrinth]

my famicom audio is very scrappy to begin with, maybe if it's somehow cleaned up (if possible) it will work correctly in the dvi+L/R -> hdmi unit.

To rule out the combiner, pull the DVI from the OSSC and connect the 3.5" jack to your phone while playing some songs

As I have said, it works with Mega Drive. But not with RGBmodded Sharp Twin Famicom. I am assuming this is because the audio signal from the famicom is so bad.

[BuckoA51]

Any indication as to when the audio add-on will be offered as an option? Since I'll be running it to a Pioneer (with it's decent, but more importantly, front facing speakers), it's a fair consideration for me.

We're waiting on the first batch of PCBs for these at the moment.

[BuckoA51]

Barebones DIY kits are now available:-

https://www.videogameperfection.com/pro ... barebones/

Depending on any feedback I get I'll consider a more fully featured DIY kit in future, though buying the components from your local supplier should work out cheaper in most instances.

[Tranquilite]

Barebones DIY kits are now available:-

https://www.videogameperfection.com/pro ... barebones/

Depending on any feedback I get I'll consider a more fully featured DIY kit in future, though buying the components from your local supplier should work out cheaper in most instances.

I bought one of the first wave of DIY kits from Marqs, and had all the SMD components soldered before I detected that power and ground were shorted. It took me a month of weekends to find the short. Despite excellent assembly instructions and ample warning, I still managed to break one of the legs off of the LCD screen, and had to dremel my way back in to find a trace to solder to. I somehow managed to get a working OSSC anyway. This project is not for the faint of heart.

A++ would buy again.

[Nrg]

OSSC has been working perfectly with all the sources I've tried so far.. until now.

I have Commodore 64 svideo output connected to Sony S-RGB transcoder, and the RGB SCART output from Sony transcoder connected to OSSC AV1 SCART input. The problem is OSSC detects the input signal, but output is totally black/empty. Any idea what might be causing this? Connecting the Sony transcoder directly to TV using RGB SCART works OK, so the problem is related to OSSC..

Bad: C64 svideo -> Sony S-RGB SCART -> OSSC -> TV.
Good: C64 svideo -> Sony S-RGB SCART -> TV.

OSSC reports the following information about the signal from C64 via Sony S-RGB transcoder:

AV1: RGBS 311p
15.63 kHz 50.27Hz

Samsung TV detects the OSSC DVI output as 720x576 @ 50 Hz, but the image is totally black/empty.
Any ideas? Currently OSSC in question is running 0.69 firmware.

[marqs]

OSSC has been working perfectly with all the sources I've tried so far.. until now.

I have Commodore 64 svideo output connected to Sony S-RGB transcoder, and the RGB SCART output from Sony transcoder connected to OSSC AV1 SCART input. The problem is OSSC detects the input signal, but output is totally black/empty. Any idea what might be causing this? Connecting the Sony transcoder directly to TV using RGB SCART works OK, so the problem is related to OSSC..

Bad: C64 svideo -> Sony S-RGB SCART -> OSSC -> TV.
Good: C64 svideo -> Sony S-RGB SCART -> TV.

OSSC reports the following information about the signal from C64 via Sony S-RGB transcoder:

AV1: RGBS 311p
15.63 kHz 50.27Hz

Samsung TV detects the OSSC DVI output as 720x576 @ 50 Hz, but the image is totally black/empty.
Any ideas? Currently OSSC in question is running 0.69 firmware.

Try setting both H-PLL pre and post coast values to 3 or 4. As a general rule, if there are sane numbers on the character display (with red LED possibly alight), the source requires tuning H-PLL coast settings.

[BuckoA51]

Might also need a touch of Analogue sync LPF - as per the Wiki page - http://junkerhq.net/xrgb/index.php/C64

Very bright screens on the C64 may cause problems too.

A++ would buy again.

[cleeg]

Does the OSSC have any issues with PAL 50hz consoles modded to run NTSC games in 60hz? In particular I'm wondering if I should just get an NTSC PS1 console for use with the PSIO, or would my PAL console running NTSC games achieve the exact same result?

I've seen examples where a 50/60hz modded PAL Sega Mega Drive doesn't truly run in 60hz, just very close to it which causes issues on some displays and even lag on side-scrolling games etc. Does this apply to every PAL console modded for 60hz with the OSSC?

I think it was actually BuckoA51 who talked about this in a YouTube vid.

As far as I understand it, the PS1 is like the PS2 in regard to Hz: If you can play a game out of the console's native region it will run at its correct speed whatever; an NTSC J/U game will run at 60Hz on a PAL unit, and an NTSC console running a PAL game will do so at 50Hz. Please correct me if I'm wrong!

[Nrg]

Try setting both H-PLL pre and post coast values to 3 or 4. As a general rule, if there are sane numbers on the character display (with red LED possibly alight), the source requires tuning H-PLL coast settings.

Changing the H-PLL pre/post values to 4 made the led change from red to green, but TV still shows black/empty screen.. I also tried playing with analog sync LPF, but that didn't seem to help. Other ideas?

Thanks!

[BuckoA51]

As far as I understand it, the PS1 is like the PS2 in regard to Hz: If you can play a game out of the console's native region it will run at its correct speed whatever; an NTSC J/U game will run at 60Hz on a PAL unit, and an NTSC console running a PAL game will do so at 50Hz. Please correct me if I'm wrong!

Not quite, as Bayonetta might say. The PS1 runs import games at almost the correct speed, but because the PAL PS1s timing crystal is tuned for PAL not NTSC, it's a significant fraction off. I think it's something like 59.08 instead of 59.94 (or thereabouts). Some TVs freak out at this and stutter, judder or have a white streak/interference line keep going through the image.

Amiga and Megadrive also suffer from this problem quite badly.

Changing the H-PLL pre/post values to 4 made the led change from red to green, but TV still shows black/empty screen.. I also tried playing with analog sync LPF, but that didn't seem to help. Other ideas?

It sounds like your display is incompatible in this case. I know Marqs was investigating the C64 more closely so maybe we'll figure something out to improve the situation.

[blizzz]

I think it's something like 59.08 instead of 59.94 (or thereabouts).

The OSSC showed 59.17 HZ / 59.27 Hz for my PAL PSone.

[marqs]

Changing the H-PLL pre/post values to 4 made the led change from red to green, but TV still shows black/empty screen.. I also tried playing with analog sync LPF, but that didn't seem to help. Other ideas?


It sounds like your display is incompatible in this case. I know Marqs was investigating the C64 more closely so maybe we'll figure something out to improve the situation.

That's quite strange, what are the values on the other status screen (accessed via info-button) and which transcoder exactly are you using?

[Nrg]

That's quite strange, what are the values on the other status screen (accessed via info-button) and which transcoder exactly are you using?

VMod: 288p
LO: 624 VSM; 0

I also tried with Dell monitor, and it also detects the OSSC output as 720x576 @ 50 Hz, but the image is all black..

Is the C64 refresh rate 50.27Hz "too far off" from 50.00 Hz perhaps? Svideo -> RGB Transcoder is Sony S-RGB YR-3000.

[BuckoA51]

I've a PAL C64C and the exact same transcoder here. I noticed it didn't work with the PEXHDCAP (the picture comes and goes), but works with my TV. My C64 has a Lumafix board in it too but it worked before I fitted that.

Might be worth opening a thread on the official forum for this so people can compare results.

[Nrg]

I've a PAL C64C and the exact same transcoder here. I noticed it didn't work with the PEXHDCAP (the picture comes and goes), but works with my TV. My C64 has a Lumafix board in it too but it worked before I fitted that.

Yep. Like said my TV accept the C64 svideo -> Sony transcoder -> TV RGB SCART signal just fine, no problems with it. I only have problems when passing the signal through OSSC..

Might be worth opening a thread on the official forum for this so people can compare results.

I guess I'll do that..

Thanks.

[mechacrash]

As far as I understand it, the PS1 is like the PS2 in regard to Hz: If you can play a game out of the console's native region it will run at its correct speed whatever; an NTSC J/U game will run at 60Hz on a PAL unit, and an NTSC console running a PAL game will do so at 50Hz. Please correct me if I'm wrong!

Not quite, as Bayonetta might say. The PS1 runs import games at almost the correct speed, but because the PAL PS1s timing crystal is tuned for PAL not NTSC, it's a significant fraction off. I think it's something like 59.08 instead of 59.94 (or thereabouts). Some TVs freak out at this and stutter, judder or have a white streak/interference line keep going through the image.

Amiga and Megadrive also suffer from this problem quite badly.

Out of curiosity, how does the net yaroze handle this? As far as I can remember, it's a region free PS1... but does it do the simple "approximation" for timing like a modded PS1 does, or does it have a more complicated oscillator?

[eric90000]

That OSSC newsletter this morning Looks like I'm gonna get one sooner than I thought!

[Nrg]

Might be worth opening a thread on the official forum for this so people can compare results.

Now done: https://www.videogameperfection.com/for ... ranscoder/

[xadox]

@BuckoA51 I am on place 254. Could I also order one on the next batch?

[CobraKing]

^^
In the most recent newsletter, they've ordered about 500 units - so you'll definitely be included in the next batch.

[TillDawn]

I am currently thinking about buying a new TV. As far as I can tell, my current Sony W655 does not seem to support the linetriple mode of the OSSC and I would consider buying a TV that does. Is there a list or overview that has all TV models that are currently known to support linetriple mode?

By the way, the OSSC is a great piece of equipment, very happy with mine

[BuckoA51]

https://docs.google.com/spreadsheets/d/ ... =923290594

Having seen the 480p scaling on newer Sony sets, I honestly wouldn't care if line triple wasn't supported on my display if I had one of those.

[Fudoh]

As announced by BuckoA51 in the newsletter already, the MY LIFE IN GAMING video is now up: https://www.youtube.com/watch?v=lHoOKLWIMKU

[TillDawn]

https://docs.google.com/spreadsheets/d/ ... =923290594

Thanks a lot for the overview, very useful.

Having seen the 480p scaling on newer Sony sets, I honestly wouldn't care if line triple wasn't supported on my display if I had one of those.

Yeah, it looks very good, for sure, and I have nothing to complain about. Just wanted to check whether a solution exists that has low input lag, like the W655, and works with linetriple mode. Tanks again!

[Fudoh]

Just wanted to check whether a solution exists that has low input lag, like the W655, and works with linetriple mode.

If you are in the US, Vizio would be your choice. Over here in Europe it's much more complicated and you probably would have to get a much more expensive Samsung to get low lag and possible 720p compatibility with the OSSC.

[fafangus]

My samsung UE32J6300 works with line triple mode and has very low lag...