Retroarch PSP graphics glitches

Hi! I tried to run my core Theodore ( on PSP. It is running but with some strange graphics glitches: the top part of the screen is blinking and the right part is a repetition of the same column, but the remaining part of the screen is ok. I do not have any PSP specific code in my core. Is there any particular thing to do, like using a particular function for allocating the video buffer? Thanks. Thomas

Does it look okay outside of PSP? like, PC etc?

Yes, it’s running ok on PC, android, raspberry pi, even WiiU!

Hi, does anyone have an idea of what is going wrong ? Thanks