USS820_SCR
USS820_WRITE_1(sc, USS820_SCR, USS820_SCR_SRESET);
USS820_WRITE_1(sc, USS820_SCR, 0);
USS820_WRITE_1(sc, USS820_SCR,
temp = USS820_READ_1(sc, USS820_SCR);
USS820_WRITE_1(sc, USS820_SCR, temp);
scr = USS820_READ_1(sc, USS820_SCR);
USS820_WRITE_1(sc, USS820_SCR, scr);