1111nnn010101101
Available only when PR=1 and SZ=0
sr ← ZeroExtend32(SR);
fps ← ZeroExtend32(FPSCR);
fpul ← SignExtend32(FPUL);
IF (FpuIsDisabled(sr) AND IsDelaySlot())
THROW SLOTFPUDIS;
IF (FpuIsDisabled(sr))
THROW FPUDIS;
op1, fps ← FCNV_SD(fpul, fps);
IF (FpuEnableV(fps) AND FpuCauseV(fps))
THROW FPUEXC, fps;
IF (FpuCauseE(fps))
THROW FPUEXC, fps;
DR2n ← FloatRegister64(op1);
FPSCR ← ZeroExtend32(fps);