OSSC Pro

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  • #1669986
    ObermotzObermotz
    Teilnehmer
    Old School Checker
    Maniac (Mark II)

    Die Produktion des Framemeister wurde ja bereits eingestellt, mit dem OSSC Pro steht aber was Neues an, wenn man auf aktuellen Fernsehern zocken will.

    Highlights of the new design:

    ISL51002 video ADC:
    * improved sync processing robustness
    * reduced sampling jitter with DPLL
    * fine-grained video LPF
    * automatic sampling phase adjustment

    Cyclone V FPGA (5CEFA5F23C8N):
    * higher performance and more resources
    * hard memory controller
    * large number of IOs

    Clocking and memory improvements:
    * Si5351C clock generator for accurate output pixel clock generation (framelock or free-running)
    * 512MB LPDDR2 RAM and 16MB QSPI flash

    New AV inputs:
    * HDMI
    * SPDIF (optical)

    2×20 pin GPIO connector for future expansion possibilities such as:
    * composite & s-video input module
    * secondary video output (e.g. VGA) module
    * latency tester interface module
    * game controller port module (for using OSSC Pro as a dedicated FPGA console)

    The processing modes enabled by the HW can be split roughly into three types:

    1. Pure line multiplier
    * both active and blanking lines multiplied – basically what original OSSC does
    * simplest mode with least latency

    2. Adaptive line multiplier
    * visible lines are multiplied but horizontal & vertical total matched to standard timings
    * high compatibility with minimal latency overhead (1-30 lines typically)
    * enables some new output configurations such as 4x240p/2x480p in standard 1080p frame

    3. Scaler
    * higher flexibility via LPDDR2 utilization
    * HQ deinterlacing
    * non-integer scaling
    * rotation
    * refresh rate conversion

    It will take time until all the features get implemented, but release can be expected once the HW is complete and a sufficient number of new features are available and verified. As a thanks to community’s support for the first project, upcoming prototypes of the new model will be sent to the guys who have contributed most on the original OSSC firmware. New developers are also welcome as the project is large enough to enable different implementation areas for several people. For DIY-builders and those who can’t wait for the final HW, a small add-on PCB compatible with a couple Terasic FPGA dev boards (DE10-Nano, DE2-115) is in works and available soon. Together with the parent dev board, it can be used to implement a subset of the functionality presented above.

    Quelle

    #1670453
    retrofan81retrofan81
    Teilnehmer
    Profi (Level 2)

    Das klingt sehr interessant und ich werde mir das sicher zulegen . Ich plane mir ein Set Up aufzubauen wo ich mit Hilfe eines Scart Verteilers mit 2 Ausgängen ein Sony BVM und ein Full HD TV mit dem OSSC parallel betreiben kann. Weiß jemand ob die Hydra von Lotharek beide Ausgänge gleichzeitig befeuern kann?

    #1670454
    ObermotzObermotz
    Teilnehmer
    Old School Checker
    Maniac (Mark II)

    Mit der Hydra2 geht das problemlos, zumindest in dem Video.

    #1670455
    genpei tomategenpei tomate
    Teilnehmer
    Gold MAN!AC
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