starting io-graphics on an old C&T 65545

Hello,

Could you help me to start the correct driver on a C&T 65545 controller,
connected to an isa bus, on an embedded system ( an old panel pc )
I’ve tried :
Photon
io-graphics -dvga xres=640,yres=480,bitpp=8,photon -f

the flat panel switch to graphics mode but I get white vertical lines
separated by blank lines ?

Thanks

Philippe.