ZSR15_CTS
wr15 = ZSR15_BREAK | ZSR15_TX_UNDER | ZSR15_CD | ZSR15_CTS;
ZSR15_CTS | ZSR15_CD);
SCC_BIC(15, ZSR15_CTS);
SCC_BIC(15, ZSR15_CTS);
SCC_BIS(15, ZSR15_CTS);
(ZSR15_TX_UNDER | ZSR15_BREAK | ZSR15_SYNC | ZSR15_CTS);
zspp->wr15 &= ~ZSR15_CTS;
zspp->wr15 |= ZSR15_CTS;
SCC_BIS(15, ZSR15_CTS);
SCC_BIC(15, ZSR15_CTS);
(ZSR15_TX_UNDER | ZSR15_BREAK | ZSR15_SYNC | ZSR15_CTS));
SCC_BIS(15, ZSR15_CTS);