H_TABLE_POS1
p1 = hor_timing_NTSC[H_TABLE_POS1];
p1 = hor_timing_PAL[H_TABLE_POS1];
h_changed = (p1 != tv_dac->tv.h_code_timing[H_TABLE_POS1] ||
tv_dac->tv.h_code_timing[H_TABLE_POS1] = p1;