Optimised settings for DC 3rd Strike

[longsun_zhao]

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!

[longsun_zhao]

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

[Harrumph]

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).

[PugHoofGaming]

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?

[longsun_zhao]

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.

[longsun_zhao]

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.

[Papercut]

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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