Firmware v0.76

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  • February 26, 2017 at 11:49 PM #11555
    samson7point1
    Participant

    Really awesome update. The 5X mode is absolutely beautiful. I do seem to have a bit of a problem with it. When the OSSC starts up in 5x mode, the image is shifted down by about 20%. The only way I can get the image to move back into the correct position is to switch to 4x mode and back. I’m assuming this is a bug?

    February 28, 2017 at 4:42 PM #11577
    crx91
    Participant

    I don’t know why, but when i’m updated from my base FW 0.73 to 0.76 all mode (x2,x3, x4 or x5 with psx PAL input) shows my image always shifted down, even changing V.Backporch doesen’t help much 😛

    February 28, 2017 at 8:36 PM #11583
    marqs
    Participant

    @Harrumph: 1920×1080 format includes some internal adjustments explained here.


    @lepo76    : Does 0.75 work normally for you, and have you tested 0.76 with another display?


    @crx91    : Is that also apparent in 0.75? I’m trying to pinpoint where exactly things have gone wrong.

    March 1, 2017 at 12:03 AM #11588
    ptepid
    Participant

    The 0.76 update causes issues for me with running 15kHz signals over VGA (from Dreamcast), the sync constantly switches between 312p, 313p and 625i (PAL 50Hz). I rolled back to 0.75 and it syncs properly.

    March 1, 2017 at 11:43 AM #11592
    lepo76
    Participant

    Hi Marqs, I haven’t tried 0.75, I went from 0.73 to 0.76 and yes it does work great on my pc monitor
    It used to work on the HDTV as well with 0.73 but I’n not getting any signal now with 0.76.

    Therefore I was wondering if any default value changed btw the 2 versions

    March 1, 2017 at 12:43 PM #11598
    BuckoA51
    Keymaster

    The 0.76 update causes issues for me with running 15kHz signals over VGA (from Dreamcast), the sync constantly switches between 312p, 313p and 625i (PAL 50Hz). I rolled back to 0.75 and it syncs properly.

    I’m unable to replicate this, no problems with my modded VGA box (this one http://www.racketboy.com/retro/vgabox3.jpg)

    March 1, 2017 at 12:55 PM #11599
    ptepid
    Participant

    I’m unable to replicate this, no problems with my modded VGA box (this one http://www.racketboy.com/retro/vgabox3.jpg)

    I’m using a modded VGA cable (this guy). Did you try with NTSC or PAL? Games that run at 60Hz/480i work fine with 0.76 for me too, it’s the 50Hz interlaced signal that’s causing the sync issue. I’m using a PAL Dreamcast, in case that wasn’t clear. 🙂

    March 1, 2017 at 11:54 PM #11606
    BuckoA51
    Keymaster

    PAL Dreamcast here, dashboard is displaying just fine. Most of my software is NTSC but if you can say a specific game I’ll see if I can find it.

    March 2, 2017 at 1:31 AM #11608
    ptepid
    Participant

    Even the dashboard failed for me, along with every other PAL game.

    But I found a workaround! Everything syncs properly if 240p/288p line multiple is set to Line2x, but ONLY Line2x. If it’s Line3x or higher, or Passthru, the 625i signal over VGA fails to sync.

    I noticed that even when 240p is set to Line2x, the OSSC seems to initially think the signal is 313p and then quickly switches to 625i.

    March 2, 2017 at 1:39 AM #11609
    crx91
    Participant

    @marqs :tomorrow i will downgrade and i will report all… Thanks for the support!

    EDIT: Downgraded to 0.75 and the image was perfect, reupgraded to 0.76 strangely now is ok. No more image shifted down…
    So I’m very sorry for the false positive 😛

    March 11, 2017 at 9:40 PM #11752
    HDL
    Participant

    Is it also possible to do native aspect pass-thru? As in, can I output a 320×224 signal (Genesis) or a multiple of it?

    March 27, 2017 at 9:41 AM #12039
    Edenal
    Participant

    I’m also struggling with the 0.76 firmware update. (Test system is a NTSC Genesis)

    Since the update the OSSC doesn’t work at all with my Lumagen HDP. Not even the initial test pattern.

    To confirm that my OSSC is not broken I hooked it up straight to the monitor. To confirm that my Lumagen HDP is not broken, I hooked it up to an OSSC with 0.72 firmware. Works like clockwork.

    0.76 firmware works fine with DVDO VP50 (non pro) though with identical settings. Anyone able to shed some light on what’s changed? Or if there’s any settings that can be tweaked to get the Lumagen working?

    March 27, 2017 at 10:14 AM #12041
    BuckoA51
    Keymaster

    Nothing should have changed with the initial input test pattern. Sounds like your OSSC might have ESD damage, flash it back to 0.72 and see if the problem persists, if it does, it’s damaged I’m afraid.

    March 27, 2017 at 11:06 AM #12042
    Edenal
    Participant

    Thank you for the switch reply. I flashed it back to 0.72, same problem persists.

    The unit works perfectly when hooked up to my monitor. But not at all hooked up the the video processor. For the sake of it, I also tested multiple inputs. Same results.

    Sorry for jumping to conclusions about the firmware. If my posts causes clutter, feel free to remove them!

    March 28, 2017 at 7:43 PM #12074
    marqs
    Participant

    If you have a multimeter with a diode tester function on hand, try measuring (while OSSC is off and disconnected) forward voltage from ground (e.g. DVI chassis) to TMDS link1 and clock pins (8 total). You should measure 500-600mV in each pin if HDMI transmitter IC is undamaged.

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