ACT_ID_OVERSCAN_COLOR
WAttr(ba, ACT_ID_OVERSCAN_COLOR, 0x00);
WAttr(ba, ACT_ID_OVERSCAN_COLOR, 0x01);
WAttr(ba, ACT_ID_OVERSCAN_COLOR, 0x01);
WAttr(ba, ACT_ID_OVERSCAN_COLOR, 0x00);
WAttr(ba, ACT_ID_OVERSCAN_COLOR, 0x00);
WAttr (ba, ACT_ID_OVERSCAN_COLOR, 0x00);
regs->attr[ACT_ID_OVERSCAN_COLOR] = 0x00;