FBX

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Viewing 15 posts - 1 through 15 (of 26 total)
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  • in reply to: Firmware 0.84 #27814
    FBX
    Participant

    Apparently it’s not just me either. Had someone else message me they can’t get the SNES stable on 0.84 when it worked perfectly fine before they updated. Now I can’t claim to know if 0.83 had the same problem as I never got around to checking that one, but the updates before then my SNES was working rock-steady. Now I have to shift a bit out of phase to get a picture to hold on 0.84. Something had to have been changed during the past few firmwares for my SNES to suddenly become so unstable on the OSSC.

    I’ll try the alt build, but the point is something got “fixed” when it wasn’t broken to begin with, so people shouldn’t have to use alternate builds.

    in reply to: Firmware 0.84 #27809
    FBX
    Participant

    I don’t know when this started as I hadn’t done much testing with 0.83, but I noticed on 0.84, my SNES 1CHIP console is now very unstable on the sync (picture blacks out for several seconds at a time). It was never this way before, so clearly something was changed on how sync is handled. Anyone have some insight on this?

    in reply to: Fine-tuning of sampling rate in optimized modes #27737
    FBX
    Participant

    I’m having trouble understanding the math here. I know that if I choose line4x for Genesis 320 mode, the horizontal multiplication factor is 4. So what do I put in for H. samplerate and H. s.rate adj to get 427.5? I had artemio make me a spreadsheet to calculate the formula, but when I put in 427 for H. samplerate, I get an effective samplerate output of around 107 depending on the value in H. s.rate adj. I’m just totally confused.

    Edit: spreadsheet was missing a parenthesis, which threw the whole formula off. It all makes sense now, and I was right in working it out in my head that a value of “2” was needed for 427.5 for 320 at line4x.

    in reply to: Profile settings web app #23732
    FBX
    Participant

    Thanks for fixing that bug in the app! I was able to make a working set of profiles for RGB SCART (except 32X is using HD Retrovision cables in the YPbPr jacks):

    http://www.firebrandx.com/downloads/ossc_profiles_fbx.zip

    in reply to: Using OSSC with Framemeister #23731
    FBX
    Participant

    I don’t recall exactly what I did as it’s been a while since I even used the Framemeister, but feel free to check out the Dreamcast + Toro Box + OSSC Framemeister profile I made:

    http://www.firebrandx.com/downloads/OSSCTORO.zip

    I believe it used HDMI1 input and I was able to dial in a perfect integer scale on it from the 960P source. I even made a comparison picture showing the difference between straight into the Framemeister and then using the OSSC to line double to 960P into the FM’s HDMI port:

    480P FM versus 960P pre-scaled:

    in reply to: Profile settings web app #23712
    FBX
    Participant

    The app is missing the 512×240 optimal timing option in the drop-down box on each LineX mode. Can you update the app to include this new feature of firmware 0.82? Much appreciated!

    Edit: This is also causing a bug: When you assign 320×240 mode in the app for each LineX box, the OSSC reads it as 512. When you assign 256×240 in the app, the OSSC sees that as 320. So it seems the missing 512 mode is causing a ‘shift’ in the OSSC’s recognition of optimal timing modes from the bin file.

    in reply to: Optimal timing video for Genesis/Master System: #21678
    FBX
    Participant

    I’ve since started a repository of all new optimal timing research based on the 0.81 firmware. I even found some slight tweaks to improve the Genesis/MA profiles too. All are now text files on my web page here:

    OSSC Optimal Timing Repository

    Still a work in progress as I’ve got a lot more consoles to go through, but it’s a page that will continue to expand for quite some time!

    -FBX

    in reply to: Invalid data CRC: #21529
    FBX
    Participant

    Card is a sandisk and works great whenever I test it for any other applications. I’m thinking the Disk image software is flaky when it comes to these tiny bin files.

    in reply to: Invalid data CRC: #21480
    FBX
    Participant

    Found a stupid solution that works: Make the win32 disk imager write the bin file to the card TWICE in a row. Then it worked fine after that.

    FBX
    Participant

    Well I’ve not messed with anything lower than line4x to be honest, and in that case (and for line5x as well) I recommend using the “4:3” 256 aspect ratio mode the OSSC offers. There are some alignment issues with 8:7 mode I’m not happy with (one side gets pinched while the other side gets a hair of overscan).

    That said, you could see what the 4:3 option does for 256 mode optimal, and see if you can adjust your monitor based on that mode instead.

    in reply to: Horrible Dreamcast Quality with OSSC #20885
    FBX
    Participant

    I do know that there is dithering on Code Veronica for example, and it’s definitely the game itself doing it. Here’s a screenshot I took of a perfectly dialed-in optimal timing image of the title screen:

    Code Veronica Title Screen

    in reply to: Saturn optimal settings #20874
    FBX
    Participant

    @Galdelico

    Yeah, my capture card detects the various OSSC 480i modes at some very oddball resolutions that didn’t even make sense to me. Interlaced content is just not the OSSC’s cup of tea so to speak.

    in reply to: Firmware update troubles: #20872
    FBX
    Participant

    @nmalinoski, well I don’t know what was causing the CRC check to fail then. I tried it a good 30 times and it wouldn’t work. Then I tried non-audio 0.80 and that worked on the first try, which then lead into 0.80a working first try. Same card, same software imager, same file.

    in reply to: Saturn optimal settings #20864
    FBX
    Participant

    It should be the same for model 2. I just specify which model I used just in case people blow a gasket and yell at me for my profiles not working on their particular console revision.

    in reply to: Saturn optimal settings #20857
    FBX
    Participant

    Okay here are my research results, with links to my screen grabs of each example (note you will need to right-click on each image and select “View Image” to see full detail):

    Sega Saturn NTSC Model 1 OSSC optimal timings:

    320×224 (Game Example: World Heroes Perfect [has in-game letterboxing] )

    Video in proc.:

    Video LPF = 9MHz

    Ouput: (for 240p/288p proc)

    Make sure whatever linex you use is set to “320×240 opt.”

    Sync opt.:

    Analog sync LPF = 10MHz (I tend to base all my profiles on this setting)

    Sampling opt. <Adv. timing > 320×240

    H. samplerate = 427
    H. active = 320

    I didn’t have to change H. synclen or H. backporch as it happened to fall dead center on my capture card.

    Sampling opt.:

    Sampling phase = 225 degrees (this will differ from console to console).

    World Heroes Perfect 4x optimal screenshot

    ——————–

    352×224 (Game example: All of the various Capcom arcade fighting game ports)

    Video in proc.:

    Video LPF = 9MHz (vital for some saturn consoles in 352 and 704 res modes)

    Ouput: (for 240p/288p proc)

    Make sure whatever linex you use is set to “320×240 opt.”

    Sync opt.:

    Analog sync LPF = 10MHz (I tend to base all my profiles on this setting)

    Sampling opt. <Adv. timing > 320×240

    H. samplerate = 455
    H. active = 352

    I didn’t have to change H. synclen or H. backporch as it happened to fall dead center on my capture card.

    Sampling opt.:

    Sampling phase = 225 degrees (this will differ from console to console).

    Street Fighter Alpha 2 4x optimal screenshot

    ——————–

    704x480i (Game example: Virtua Fighter 2 [stage areas] )

    Video in proc.:

    Video LPF = 9MHz (vital for some saturn consoles in 352 and 704 res modes)

    Sync opt.:

    Analog sync LPF = 10MHz (I tend to base all my profiles on this setting)

    Sampling opt. <Adv. timing > 480i

    H. samplerate = 910
    H. synclen = 62
    H. backporch = 98
    H. active = 704

    Sampling opt.:

    Sampling phase = 225 degrees (this will differ from console to console).

    Note the optimal timing couldn’t perfectly fine-tune the dot alignment. Some slight ghosting appears on hard edges.

    Virtua Fighter 2 4x optimal screenshot

Viewing 15 posts - 1 through 15 (of 26 total)