Reply To: ps2 240p timings

[phl0w]

Thanks for the in-depth response, really appreciate it.
I tried your suggestion and the sample rate* stretches the picture far beyond the borders the PS2 puts out.I had to reduce it to 1640 to get a picture within the resolution’s boundaries. I then payed around with back porch to center the image.
The thing with this game is that it’s a weird one. It’s output is 224×448 (in Tate like the arcade).

You might also get some clarity issues with games that use a 384 or 512 pixel resolution

I don’t care about other games. I maintain a ps2 exclusively for this game alone plus another shmup which has the same 224×448 output. That’s why I really wanna fine tune the OSSC for this kind of signal.
Any ideas or should I stick with 1640 if it works? Thing is I don’t notice a difference to the 1560 I had it set to before.

* you came up with that sample rate via pixel clock/h.frequency right? 13500000/15730=858,xxx -> x2 oversampling = 1716,xxx. I guess this would yield a proper picture for a standard 240p (320×240) signal? But the game being that weird (224×448) it’s a different thing.

another edit: I used line2x and it defaults to half the settings you recommended (858 samplerate and 62 h.synclen). However, at line2x my monitor renders it at 720×480 which is a 3:2 aspect ratio instead of 4:3.