CRT_ID_START_HOR_BLANK
WCrt(ba, CRT_ID_START_HOR_BLANK, HBS);
WCrt(ba, CRT_ID_START_HOR_BLANK, HBS);
WCrt(ba, CRT_ID_START_HOR_BLANK, 0x50);
WCrt(ba, CRT_ID_START_HOR_BLANK, HBS);
WCrt(ba, CRT_ID_START_HOR_BLANK, 0x50);
WCrt(ba, CRT_ID_START_HOR_BLANK, HBS);
WCrt(ba, CRT_ID_START_HOR_BLANK, md->HBS & 0xff);
WCrt (ba, CRT_ID_START_HOR_BLANK, md->HBS & 0xff);
regs->crt[CRT_ID_START_HOR_BLANK] = mode->hblank_start;