Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
.8087 Instructions Enabled
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     F2XM1     FDIVP     FISUB     FMULP      FPTAN     FSUB
     FABS      FDIVR     FISUBR    FNCLEX     FRNDINT   FSUBP
     FADD      FDIVRP    FLD       FNDISI     FRSTOR    FSUBR
     FADDP     FENI      FLD1      FNENI      FRSTORW   FSUBRP
     FBLD      FFREE     FLDCW     FNINIT     FSAVE     FTST
     FBSTP     FIADD     FLDENV    FNOP       FSAVEW    FWAIT
     FCHS      FIDIV     FLDENVW   FNSAVE     FSCALE    FXAM
     FCLEX     FIDIVR    FLDL2E    FNSAVEW    FSQRT     FXCH
     FCOM      FILD      FLDL2T    FNSTCW     FST       FXTRACT
     FCOMP     FIMUL     FLDLG2    FNSTENV    FSTCW     FYL2X
     FCOMPP    FINCSTP   FLDLN2    FNSTENVW   FSTENV    FYL2XP1
     FDECSTP   FINIT     FLDPI     FNSTSW     FSTENVW
     FDISI     FIST      FLDZ      FPATAN     FSTP
     FDIV      FISTP     FMUL      FPREM      FSTSW
 
     The FDISI and FENI instructions are not available on the 80287 and
     greater coprocessors.
                                    -♦-