Optimised settings for DC 3rd Strike

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  • #26104
    longsun_zhao
    Participant

    Yo yo yo! I’ve been trying to dial in some perfectly optimized settings for some Dreamcast games, namely the Capcom fighting games for the system like Vampire Savior or Street Fighter 3. I have a well-optimized profile for 320x240p (looks great on Twinkle Star Sprites) but the Capcom games clearly require different settings. Does anyone have any recommendations? Thanks!

    #26105
    longsun_zhao
    Participant

    I should add this is via SCART, there’s nothing in the middle to mess up the signal.

    #26108
    Harrumph
    Participant

    Totally depends on how the DC ports were made and what video modes the DC generates for those games (if it’s on a game by game basis).

    The games you mention were from different platforms, CPS2 & CPS3.
    CPS2 can be optimized with 512 sample rate.
    CPS3, I’m not sure but in a MAME document I read something about 486 video clock.

    Also, optimized modes for these games, which have 384 horizontal pixels, will make the aspect ratio look quite strange (too wide).

    #26110
    PugHoofGaming
    Participant

    I just did a quick Google to see what resolution Third Strike runs at, and it looks like you can force different modes by holding a few buttons. Haven’t tried it myself but here’s what it says:

    De-interlaced – After loading the GD-ROM keep pressing the Start button + L button until the Capcom logo appears on the screen.
    240p mode with scanlines – After loading the GD-ROM keep pressing the Start button + Y button until the Capcom logo appears on the screen.
    Normal screen – After loading the GD-ROM keep pressing the Start button + X button until the Capcom logo appears on the screen.
    240p mode for scanlines (flawless) – Hold the Start button + L button until the Capcom logo appears on the screen.
    240p mode for scanlines + anti-flicker/sprite filter – Hold the Start button + Y button until the Capcom logo appears on the screen.
    480i screen, no scanlines + anti-flicker/sprite filter – Normal Bootup

    Might be worth trying these with your profiles?

    #26112
    longsun_zhao
    Participant

    I definitely have it booting in 240p mode already. I’m asking if anyone has any idea what optimised timing setting are appropriate for these games.

    #26113
    longsun_zhao
    Participant

    I know they are 384 pixel width games, and I’ve tried but I can’t get sample rates which work at all.

    Also, my TV can display 384 pixel width games in standard 4:3 just fine. I just have to use Line 3x instead of 4x.

    #26146
    Papercut
    Participant

    Some Dreamcast 240p games actually run at 640×240. From what I could see the games tend to be 320×240, but menu’s, text overlays etc. sometimes run at 640×240.

    After forcing third strike into 240p with Start+L, these settings worked for me:

    Sampling Opt.
    – 480p in sampler: DTV 480p

    Adv Timing: 512×240
    – H. samplerate: 858
    – H. synclen: 62
    – H. backporch: 106
    – H. active: 640
    – V. synclen: 3
    – V. backporch: 14
    – V. active: 240

    Sync opt.
    – H-PLL Post-Coast: 1

    Output opt.
    – 240p/288p proc.: Line5x
    – Line5x mode: 512×240 optim.
    – Line5x format: 1920×1200

    You could actually optimise this further for most 240p Capcom games, as they draw something like 614×224, rather than using the full 640×240 display. I think the horizontal resolution is integer scaled internally from 384×224 to 614×224, without interpolation, so it is always going to look a bit inconsistent.

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