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out of date.
FSUBR/FSUBRP/FISUBR
◄Summary► ◄Timings► ◄Example►
────────────────┬─────────────────────────┬────────────────────────────────
FSUBR [reg,reg]│ fsubr st,st(2) │ 87 70-100
│ fsubr st(5),st │ 287 70-100
│ fsubr │ 387 t=29-37,f=26-34
────────────────┼─────────────────────────┼────────────────────────────────
FSUBRP reg,ST │ fsubrp st(6),st │ 87 75-105
│ │ 287 75-105
│ │ 387 26-34
────────────────┼─────────────────────────┼────────────────────────────────
FSUBR memreal │ fsubr QWORD PTR [bx] │ 87 (s=90-120,s=95-125)+EA
│ fsubr shortreal[di] │ 287 s=90-120,l=95-125
│ fsubr longreal │ 387 s=25-33,l=29-37
────────────────┼─────────────────────────┼────────────────────────────────
FISUBR memint │ fisubr int16 │ 87 (w=103-139,d=109-144)+EA
│ fisubr warray[di] │ 287 w=103-139,d=109-144
│ fisubr double │ 387 w=72-84,d=58-83
────────────────┴─────────────────────────┴────────────────────────────────
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