CRT_ID_HOR_DISP_ENA_END
WCrt(ba, CRT_ID_HOR_DISP_ENA_END, ((HDE >= HBS) ? HBS - 1 : HDE));
WCrt(ba, CRT_ID_HOR_DISP_ENA_END, ((HDE >= HBS) ? (HBS - 1) : HDE));
WCrt(ba, CRT_ID_HOR_DISP_ENA_END, 0x4F);
WCrt(ba, CRT_ID_HOR_DISP_ENA_END, ((HDE >= HBS) ? (HBS - 1) : HDE));
WCrt(ba, CRT_ID_HOR_DISP_ENA_END, 0x4F);
WCrt(ba, CRT_ID_HOR_DISP_ENA_END, ((HDE >= HBS) ? HBS - 1 : HDE));
WCrt(ba, CRT_ID_HOR_DISP_ENA_END, (HDE-1) & 0xff);
WCrt (ba, CRT_ID_HOR_DISP_ENA_END, (HDE-1) & 0xff);
regs->crt[CRT_ID_HOR_DISP_ENA_END] = ((HDE >= mode->hblank_start)