{ "mtsrin", X(31,242), XRA_MASK, PPC32, { RS, RB } },
{ "mtsri", X(31,242), XRA_MASK, POWER32, { RS, RB } },
-{ "dcbtst", X(31,246), XRT_MASK, PPC, { CT, RA, RB } },
+{ "dcbtst", X(31,246), X_MASK, PPC, { CT, RA, RB } },
{ "stbux", X(31,247), X_MASK, COM, { RS, RAS, RB } },
{ "lscbx", XRC(31,277,0), X_MASK, M601, { RT, RA, RB } },
{ "lscbx.", XRC(31,277,1), X_MASK, M601, { RT, RA, RB } },
-{ "dcbt", X(31,278), XRT_MASK, PPC, { CT, RA, RB } },
+{ "dcbt", X(31,278), X_MASK, PPC, { CT, RA, RB } },
{ "lhzx", X(31,279), X_MASK, COM, { RT, RA, RB } },