OPB-compatible VGA character display, no DAC

user_logic.v (line 2132) now it is vhdl-like defparam value: defparam RESET_SYSTEM_DCM.INIT = "000F"; but it should be: defparam RESET_SYSTEM_DCM.INIT = 16'h000F;

Other thing is that it does not work stable with my LCD. When I write the same string at the same position every 1 second, there are often wrong chars in some random(?) positions. Maybe I should adjust some VGA timing parameters in SVGA_DEFINES.v file to fix it ?