DCM
{"dtstdc", Z(59,194), Z_MASK, POWER6, PPCVLE, {BF, FRA, DCM}},
{"dtstdcq", Z(63,194), Z_MASK, POWER6, PPCVLE, {BF, FRAp, DCM}},
#define DGM DCM
DIONAME(DCM), DIONAME(DCMREM),
data |= DCM;
data &= ~DCM;
tmp |= DCM | CG_DT(1) | CLK_OD(4);
tmp &= ~DCM;
data |= DCM;
data &= ~DCM;