x87 is a floating-point-related subset of the x86 architecture instruction set. It originated as an extension of the 8086 instruction set in the form...

instructions provided by x87 obey PC and RC. x87 coprocessors (other than the 8087) handle exceptions in a fairly unusual way. When an x87 instruction generates...

mode switching penalty for issuing x87 instructions present in MMX because it is sharing register space with the x87 FPU. The SSE2 also complements the...

independent clocking schemes. CORDIC routines have been implemented in Intel x87 coprocessors (8087, 80287, 80387) up to the 80486 microprocessor series,...

do have limited support for the decimal numeral system. In addition, the x87 part supports a unique 18-digit (ten-byte) BCD format that can be loaded...

integrated this x87 functionality on chip which made the x87 instructions a de facto integral part of the x86 instruction set. Each x87 register, known...

aliases for the existing x87 floating-point unit (FPU) registers, which context switches would already save and restore. Unlike the x87 registers, which behave...

The available speed version were 4.77 (5), 8, and 10 MHz. There were later x87 coprocessors for the 80186, 80286, 80386, and 80386SX processors. Starting...

the standard x87 FPU, 3DNow! instructions and x87 instructions cannot be executed simultaneously. However, because it is aliased to the x87 FPU, the 3DNow...

Floating-point arithmetic is supported via mandatory SSE2-like instructions, and x87/MMX style registers are generally not used (but still available even in 64-bit...