PRO_PCS
PRWRITE(sc, PRX(chp->ch_channel, PRO_PCS), PR_PC_PORT_INITIALIZE);
PRWRITE(sc, PRX(chp->ch_channel, PRO_PCS), PR_PC_PMP_ENABLE);
PRWRITE(sc, PRX(chp->ch_channel, PRO_PCS), PR_PC_DEVICE_RESET);
PRWRITE(siic, PRX(chp->ch_channel, PRO_PCS),
PRWRITE(sc, PRX(chp->ch_channel, PRO_PCS),
#define PRO_PS PRO_PCS /* (read) port status */