RBOPT
{"dccci", X(31,454), XRT_MASK, PPC403|PPC440|TITAN|PPCA2, 0, {RAOPT, RBOPT}},
#define RC RBOPT + 1
{"iccci", X(31,966), XRT_MASK, PPC403|PPC440|TITAN|PPCA2, 0, {RAOPT, RBOPT}},