ReadIPAC
ista = ReadIPAC(ipac, ISACX_ISTA);
ista = ReadIPAC(ipac, ISACX_ISTA);
ista = ReadIPAC(ipac, IPAC_ISTA);
ista = ReadIPAC(ipac, IPAC_ISTA);
ista = ReadIPAC(ipac, IPAC_ISTAB + ipac->hscx[1].off);
val = ReadIPAC(ipac, IPAC_ID);
val = ReadIPAC(ipac, IPAC_CONF);
val = ReadIPAC(ipac, IPAC_ID);