X1241REG_SR
WRITERTC(sc, X1241REG_SR, X1241REG_SR_WEL);
WRITERTC(sc, X1241REG_SR, X1241REG_SR_WEL | X1241REG_SR_RWEL);
WRITERTC(sc, X1241REG_SR, 0);
status = READRTC(sc, X1241REG_SR);
WRITERTC(sc, X1241REG_SR, X1241REG_SR_WEL);
WRITERTC(sc, X1241REG_SR, X1241REG_SR_WEL | X1241REG_SR_RWEL);
WRITERTC(sc, X1241REG_SR, 0);
status = READRTC(sc, X1241REG_SR);