I’m playing around with my PSX at the moment. It’s a modded PAL console that runs at 59.27 Hz. The firmware is borti’s v0.70 with sound support, which is based on .69 I believe.
The 320×240 optimized Linetriple Mode looks amazing after some adjustments to the sampling phase. After getting the right value for the sampling phase I reset the console and the picture came back very blurry, as if the sampling phase was way off. When I increased the sampling phase by one step and then decreased it by one again the picture was perfect once more.
Does the sampling phase auto-adjust (to a wrong value) when you reset the console?
It resets every time you change out of the video mode. Root cause is a design flaw in TVP7002 digitizer chip when it is in PLLDIV2 mode. I’ll try to find a way to use these pixel-optimized modes without using PLLDIV2 so that phase setting wouldn’t be lost.