May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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A-46 APPENDIX
FMUL Floating point multiply
FMULP Floating point multiply and pop
variations/
operand 8087 287 387 486 Pentium
fmul reg s 90-105 90-105 29-52 16 3/1 FX
fmul reg 130-145 130-145 46-57 16 3/1 FX
fmul mem32 (110-125)+EA 110-125 27-35 11 3/1 FX
fmul mem64 (154-168)+EA 154-168 32-57 14 3/1 FX
fmulp reg s 94-108 94-108 29-52 16 3/1 FX
fmulp reg 134-148 134-148 29-57 16 3/1 FX
s = register with 40 trailing zeros in fraction
FNOP no operation
8087 287 387 486 Pentium
10-16 10-16 12 3 1 NP
FPATAN Partial arctangent
8087 287 387 486 Pentium
250-800 250-800 314-487 218-303 17-173
FPREM Partial remainder
FPREM1 Partial remainder (IEEE compatible, 387+)
variations ...
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