FAIL_MAX
FAIL_MAX("v_disp too large", v_disp, 0x7ff);
FAIL_MAX("v_sync_stsrt too large", v_sync_strt, 0x7ff);
FAIL_MAX("v_total too large", v_total, 0x7ff);
FAIL_MAX("h_disp too large", h_disp, 0xff);
FAIL_MAX("h_sync_strt too large", h_sync_strt, 0x1ff);
FAIL_MAX("h_total too large", h_total, 0x1ff);