Reply To: Tips & Tweaks: Lx3, Lx4, Lx5 modes

[Anonymous]

I was having problems getting CPS1 and CPS2 game boards to display properly. They were displaying with top and bottom edges off the screen. Capturing from the camlink would have it shifted down, and about 1/8 of the bottom of the image being cut off.
I found the below settings to work for CPS1/CPS2 , to get it to display fully on screen in line5x @ 1920×1080, and perfectly centered within capture software.

Start OSSC and game. Set OSSC to:

Output Opt:
240p/288p proc
Line5x

Line5x Mode
Generic 4:3

Line5x format
1920×1080

Sampling Opt:
<Adv Timing>
1536×240

V. synclen 1
V. backporch 1
V. active 300
H. samplerate 2046
H. synclen 150
H. Backporch 231
H. active 1538

If it gets close to centered, but not perfectly centered, then v./h. backporch should be your first attempts to center, and use v./h. synclen if those don’t work or some additional fine tuning is needed.

Both devices see it as a 1920×1235, whatever the heck that is.

I hope this is helpful to others.

:edit: I just tested the above with MVS also, and it solved my problem of not being able to the grid pattern fully on the screen. That of course, includes the standard tweaks necessary to get MVS syncing (and the one tweak to Analog LPF that I found to be necessary, for me at least):

Sync OPT. -> H-PLL Post-Coast – 2 lines
Sync OPT. -> Hsync Tolerance – 8.30us
Sync OPT. -> Analog LPF – 10MHz