CRT_ID_START_VER_RETR
WCrt(ba, CRT_ID_START_VER_RETR, VSS);
WCrt(ba, CRT_ID_START_VER_RETR, VSS);
WCrt(ba, CRT_ID_START_VER_RETR, 0x9C);
WCrt(ba, CRT_ID_START_VER_RETR, VSS);
WCrt(ba, CRT_ID_START_VER_RETR, 0x9C);
WCrt(ba, CRT_ID_START_VER_RETR, VSS);
WCrt(ba, CRT_ID_START_VER_RETR, md->VSS & 0xff);
WCrt (ba, CRT_ID_START_VER_RETR, md->VSS & 0xff);
regs->crt[CRT_ID_START_VER_RETR] = mode->vsync_start;