PRSX
PRSX(chp->ch_channel, xfer->c_slot, PRSO_FIS),
if (PRREAD(sc, PRSX(chp->ch_channel, xfer->c_slot, PRSO_RTC)))
PRREAD(sc, PRSX(chp->ch_channel, xfer->c_slot, PRSO_RTC));
sc_xfer->resid -= PRREAD(sc, PRSX(chp->ch_channel, xfer->c_slot,
PRSX(chp->ch_channel, xfer->c_slot,
*sigp |= (PRREAD(sc, PRSX(chp->ch_channel, c_slot,
*sigp |= PRREAD(sc, PRSX(chp->ch_channel, c_slot,
sig |= (PRREAD(sc, PRSX(chp->ch_channel, c_slot,
sig |= PRREAD(sc, PRSX(chp->ch_channel, c_slot,