NASM 2.05 based x86 Instruction Reference[ch062]
A.5.42 CVTPS2DQ: Packed Single-Precision FP to Packed Signed INT32 Conversion CVTPS2DQ xmm1,xmm2/mem128 ; 66 0F 5B /r [WILLAMETTE,SSE2] CVTPS2DQ converts four packed single-precision FP values from the source operand to four packed signed doublewords in the destination operand. The destination operand is an XMM register. The source can be either an XMM register or a 128-bit memory location. For more details of this instruction, see the Intel Processor manuals.