ZSWR5_RTS
if (!(zs->zs_wreg[5] & ZSWR5_RTS)) { \
SCC_BIS(5, ZSWR5_RTS); \
if (zs->zs_wreg[5] & ZSWR5_RTS) \
SCC_BIC(5, ZSWR5_RTS); \
} else if (zs->zs_wreg[5] & ZSWR5_RTS) { \
SCC_BIC(5, ZSWR5_RTS); \
b |= ZSWR5_RTS;
if (bits & ZSWR5_RTS)
wr5 = (zs->zs_wreg[5] & (ZSWR5_RTS|ZSWR5_DTR)) | ZSWR5_TX_ENABLE;
rtsdtr_bits = ZSWR5_RTS | ZSWR5_DTR;
mbits = zs->zs_wreg[5] & (ZSWR5_RTS|ZSWR5_DTR);
zs->zs_wreg[5] &= ~(ZSWR5_RTS|ZSWR5_DTR);
SCC_BIS(5, mbits & (ZSWR5_RTS|ZSWR5_DTR));
SCC_BIC(5, ZSWR5_RTS);
zspp->wr5 |= ZSWR5_RTS;
SCC_BIC(5, ZSWR5_RTS);
SCC_BIS(5, ZSWR5_RTS);
SCC_BIC(5, ZSWR5_RTS);
SCC_BIC(5, (ZSWR5_DTR | ZSWR5_RTS | ZSWR5_TXCRC_ENABLE));
SCC_BIS(5, ZSWR5_RTS);
#define ZS_ON (ZSWR5_DTR|ZSWR5_RTS)