First, I'll test the onboard video at those timings (using my old monitor, just in case...) If it works, I'll consider building the C-sync circuit. If not, I'll try to find a used PCI Geforce MX or PCI?? VE/7000. I forgot my old ATI 7000 is AGP and the 810 mobo doenst have a AGP slot.
But I think I'll start wiring the LCD so I can test it. Tidder, do you have a schematic for your wiring? I assume you didnt need to alter the wiring when you switched video cards. There are so many different versions online, I would like to use the one most similar to my setup. You have a offical Sony NTSC version, right?
I definitely would prefer to get the PSone LCD working. Its bigger, color TFT, and I can control it with a mouse instead of serial buttons or a hacked keypad.