Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

add SONY CXA2025AS YUV decoder present #439

Closed
zack867 opened this issue Mar 16, 2025 · 2 comments
Closed

add SONY CXA2025AS YUV decoder present #439

zack867 opened this issue Mar 16, 2025 · 2 comments

Comments

@zack867
Copy link

zack867 commented Mar 16, 2025

According to page 17 of public SONY CXA2025AS Datasheet PDF.
It has a R-Y G-Y axis selector switch to switch axis angle for JAPAN NTSC-J and US NTSC-M
JP : R-Y: 95° * 0.78 G-Y: 240° * 0.3 B-Y: 0° * 1
US : R-Y: 112° * 0.83 G-Y: 252° * 0.3 B-Y: 0° * 1
Since nestopia already support native YUV decoder function,
I think it's a good idea to include SONY CXA2025AS-JP and SONY CXA2025AS-US present.

@carmiker
Copy link
Collaborator

I think it's a jolly good idea. I'm experimenting right now, and these numbers produce a nice palette in both cases. The US version is slightly different from the included SONY_CXA2025AS_US.pal. I suppose the YUV generator may be more accurate than this palette which I believe was handcrafted.

@carmiker
Copy link
Collaborator

These are added to the core now, and are currently usable in the FLTK frontend (and upstream in Nestopia JG). I've removed the old .pal based CXA2025AS option, but it is still loadable as a custom palette.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

2 participants