Intel 8087

Intel 8087
Intel 8087 Math Coprocessor
Produced	1980
Marketed by	Intel, IBM^[1]
Designed by	Intel
Common manufacturer(s)	Intel AMD^[2] Cyrix^[3]
Max. CPU clock rate	4 MHz to 10 MHz
Min. feature size	3 μm
Instruction set	x87 (coprocessor extension of x86-16)
Predecessor	8231
Successor	80287
Package(s)	40-pin DIP

The Intel 8087, announced in 1980, was the first x87 floating-point coprocessor for the 8086 line of microprocessors.^[4]^[5]

The purpose of the 8087 was to speed up computations for floating-point arithmetic, such as addition, subtraction, multiplication, division, and square root. It also computed transcendental functions such as exponential, logarithmic or trigonometric calculations, and besides floating-point it could also operate on large binary and decimal integers. The performance enhancements were from approximately 20% to over 500%, depending on the specific application. The 8087 could perform about 50,000 FLOPS^[4] using around 2.4 watts.^[5] Only arithmetic operations benefited from installation of an 8087; computers used only with such applications as word processing, for example, would not benefit from the extra expense (around $150^[6]) and power consumption of an 8087.

Die of Intel 8087.

The 8087 was an advanced IC for its time, pushing the limits of period manufacturing technology. Initial yields were extremely low.

The sales of the 8087 received a significant boost when IBM included a coprocessor socket on the IBM PC motherboard. Due to a shortage of chips, IBM did not actually offer the 8087 as an option for the PC until it had been on the market for six months. Development of the 8087 led to the IEEE 754-1985 standard for floating-point arithmetic. There were later x87 coprocessors for the 80186 (not used in PC-compatibles), 80286, 80386, and 80386SX processors. Starting with the 80486, the later Intel x86 processors did not use a separate floating point coprocessor; floating point functions were provided integrated with the processor.

Design and development

Intel had previously manufactured the 8231 Arithmetic processing unit, and the 8232 Floating Point Processor. These were designed for use with 8080 or similar processors and used an 8-bit data bus. They were interfaced to a host system either through programmed I/O or a DMA controller.^[7]

The 8087 was initially conceived by Bill Pohlman, the engineering manager at Intel who oversaw the development of the 8086 chip. Bill took steps to be sure that the 8086 chip could support a yet-to-be-developed math chip.

In 1977 Pohlman got the go ahead to design the 8087 math chip. Bruce Ravenel was assigned as architect, and John Palmer was hired to be co-architect and mathematician for the project. The two came up with a revolutionary design with 64 bits of mantissa and 16 bits of exponent for the longest format real number, with a stack architecture CPU and 8 80-bit stack registers, with a computationally rich instruction set. The design solved a few outstanding known problems in numerical computing and numerical software: rounding error problems were eliminated for 64-bit operands, and numerical mode conversions were solved for all 64-bit numbers. Palmer credited William Kahan's writings on floating point as a significant influence on their design.^[8]

The 8087 design initially met a cool reception in Santa Clara due to its aggressive design. Eventually, the design was assigned to Intel Israel, and Rafi Nave was assigned to lead the implementation of the chip. Palmer, Ravenel and Nave were awarded patents for the design.^[9] Robert Koehler and John Bayliss were also awarded a patent for the technique where some instructions with a particular bit pattern were offloaded to the coprocessor.^[10]

The 8087 had 45,000 transistors and was manufactured as a 3 μm depletion load HMOS circuit. It worked in tandem with the 8086 or 8088 and introduced about 60 new instructions. Most 8087 assembly mnemonics begin with F, such as FADD, FMUL, FCOM and so on, making them easily distinguishable from 8086 instructions. The binary encodings for all 8087 instructions begin with the bit pattern 11011, decimal 27, the same as the ASCII character ESC although in the higher order bits of a byte; similar instruction prefixes are also sometimes referred to as "escape codes". When the 8088 saw the escape code, it would defer to the 8087 until it was ready.

The codes are encoded in 6 bits across 2 bytes, beginning with the escape sequence:

 ┌───────────┬───────────┐
 │ 1101 1xxx │ mmxx xrrr │
 └───────────┴───────────┘

The first three x's are the first three bits of the floating point opcode. Then two m's, then the latter half three bits of the floating point opcode, followed by three r's. The m's and r's specify the addressing mode information.^[11]

Application programs had to be written to make use of the special floating point instructions. At run time, software could detect the coprocessor and use it for floating point operations. When detected absent, similar floating point functions had to be calculated in software or the whole coprocessor could be emulated in software for more precise numerical compatibility.^[6]

Registers

Simplified 8087 microarchitecture.

The x87 family does not use a directly addressable register set such as the main registers of the x86 processors; instead, the x87 registers form an eight-level deep stack structure^[12] ranging from st0 to st7, where st0 is the top. The x87 instructions operate by pushing, calculating, and popping values on this stack. However, dyadic operations such as FADD, FMUL, FCMP, and so on may either implicitly use the topmost st0 and st1, or it may use st0 together with an explicit memory operand or register; the st0 register may thus be used as an accumulator (i.e. as a combined destination and left operand) and can also be exchanged with any of the eight stack registers using an instruction called FXCH stX (codes D9C8..D9CF_h). This makes the x87 stack usable as seven freely addressable registers plus an accumulator. This is especially applicable on superscalar x86 processors (Pentium of 1993 and later) where these exchange instructions are optimized down to a zero clock penalty.

IEEE floating point standard

When Intel designed the 8087, it aimed to make a standard floating-point format for future designs. An important aspect of the 8087 from a historical perspective was that it became the basis for the IEEE 754 floating-point standard. The 8087 did not implement the eventual IEEE 754 standard in all its details, as the standard was not finished until 1985, but the 80387 did. The 8087 provided two basic 32/64-bit floating-point data types and an additional extended 80-bit internal temporary format (that could also be stored in memory) to improve accuracy over large and complex calculations. Apart from this, the 8087 offered an 80-bit/18-digit packed BCD (binary coded decimal) format and 16, 32, and 64-bit integer data types.^[12]

8087 Data Types

⁷₉

...

⁷₁

...

⁶₇

...

⁶₃

...

⁵₀

...

³₁

...

²₂

...

¹₅

...

⁰₀

(bit position)

Exponent

Fraction

80-bit extended-precision real

Exponent

Fraction

64-bit double-precision real

Exponent

Fraction

32-bit single-precision real

BCD Integer

18-digit decimal integer

Integer

64-bit binary integer

Integer

32-bit binary integer

Integer

16-bit binary integer

Infinity

The 8087 handles infinity values by either affine closure or projective closure (selected via the status register). With affine closure, positive and negative infinities are treated as different values. With projective closure, infinity is treated as an unsigned representation for very small or very large numbers.^[13] These two methods of handling infinity were incorporated into the draft version of the IEEE 754 floating-point standard. However, projective closure was dropped from the later formal issue of IEEE 754-1985. The 80287 retained projective closure as an option, but the 80387 and subsequent floating point processors (including the 80187) only supported affine closure.

Coprocessor interface

The 8087 differed from subsequent Intel coprocessors in that it was directly connected to the address and data buses. The 8088/86 looked for instructions that commenced with the '11011' sequence and relinquished control to the coprocessor. The coprocessor handed control back once the execution of the coprocessor instruction was complete. There was a potential crash problem if the coprocessor instruction failed to decode to one that the coprocessor understood. Intel's later coprocessors did not connect to the buses in the same way, but were handed the instructions by the main processor. This yielded an execution time penalty, but the potential crash problem was avoided because the main processor would ignore the instruction if the coprocessor refused to accept it. The 8087 was able to detect whether it was connected to an 8088 or an 8086 by monitoring the data bus during the reset cycle.

The 8087 was, in theory, capable of working concurrently while the 8086/8 processes additional instructions. In practice, there was the potential for a bus crash if both processors attempted to access either bus simultaneously. The assembler would automatically insert an 'FWAIT' instruction after each and every coprocessor opcode forcing the 8086/8 to halt execution until the 8087 signalled that it had finished.^[14] This limitation was removed from later designs.

Models and second sources

Intel 8087 Math Coprocessor Pinout

Intel 8087 coprocessors were fabricated in two variants, one with ceramic side-brazed DIP (CerDIP) and one in hermetic DIP (PDIP), and were designed to operate in the following temperature ranges:

C, D, QC and QD prefixes: 0 °C to +70 °C (Commercial use).
LC, LD, TC and TD prefixes: −40 °C to +85 °C (Industrial use).
MC and MD prefixes: −55 °C to +125 °C (Military use).

All models of the 8087 had a 40 pin DIP package and operated on 5 volts, consuming around 2.4 watts. Unlike later Intel coprocessors, the 8087 had to run at the same clock speed as the main processor.^[6] Suffixes on the part number identified the clock speed:

8087 clock speeds^[5]^[12]
Model number	Frequency
Intel 8087	5 MHz
Intel 8087-1	10 MHz
Intel 8087-2	8 MHz
Intel 8087-3	4 MHz
Intel 8087-6	6 MHz

The original 5 MHz Intel C8087
The original 5 MHz Intel D8087
An 8 MHz Intel D8087-2
An Intel 5 MHz C8087-3

The part was second-sourced by AMD as AMD 8087^[2] and by Cyrix as Cyrix 8087.^[3] The clone K1810WM87 of the 8087 was produced in the Soviet Union.^[15]

Successors

Just as the 8088 and 8086 processors were superseded by later parts, so was the 8087 superseded. Other Intel coprocessors were the 80287, 80387, and the 80187. Starting with the 80486, the later Intel processors did not use a separate floating point coprocessor; virtually all included it on the main processor die, with the significant exception of the 80486SX which was a modified 80486DX with the FPU disabled. The 80487 was in fact a full blown i486DX chip with an extra pin. When installed, it disabled the 80486SX CPU. The 80486DX, Pentium, and later processors include floating-point functionality on the CPU core.

Complete FPU Instruction set of the 8087

Abbreviations:

f32: 32 bit IEEE-754 floating point number
f64: 64 bit IEEE-754 floating point number
f80: 80 bit IEEE-754 floating point number
i16: 16 bit signed integer
i32: 32 bit signed integer
i64: 64 bit signed integer
bcd: 80 bit signed BCD integer
u16: 16 bit status or control word
env: FPU environment state
stt: complete FPU state (FPU environment + eight 80 bit floating point registers)

Table contains complete FPU instruction set of 8087, 80287, 80387 and the last extension on Pentium based FPUs.

Instruction Set
Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo
D800	FADD f32[BX+SI]	D808	FMUL f32[BX+SI]	D810	FCOM f32[BX+SI]	D818	FCOMP f32[BX+SI]	D820	FSUB f32[BX+SI]	D828	FSUBR f32[BX+SI]	D830	FDIV f32[BX+SI]	D838	FDIVR f32[BX+SI]
D801	FADD f32[BX+DI]	D809	FMUL f32[BX+DI]	D811	FCOM f32[BX+DI]	D819	FCOMP f32[BX+DI]	D821	FSUB f32[BX+DI]	D829	FSUBR f32[BX+DI]	D831	FDIV f32[BX+DI]	D839	FDIVR f32[BX+DI]
D802	FADD f32[BP+SI]	D80A	FMUL f32[BP+SI]	D812	FCOM f32[BP+SI]	D81A	FCOMP f32[BP+SI]	D822	FSUB f32[BP+SI]	D82A	FSUBR f32[BP+SI]	D832	FDIV f32[BP+SI]	D83A	FDIVR f32[BP+SI]
D803	FADD f32[BP+DI]	D80B	FMUL f32[BP+DI]	D813	FCOM f32[BP+DI]	D81B	FCOMP f32[BP+DI]	D823	FSUB f32[BP+DI]	D82B	FSUBR f32[BP+DI]	D833	FDIV f32[BP+DI]	D83B	FDIVR f32[BP+DI]
D804	FADD f32[SI]	D80C	FMUL f32[SI]	D814	FCOM f32[SI]	D81C	FCOMP f32[SI]	D824	FSUB f32[SI]	D82C	FSUBR f32[SI]	D834	FDIV f32[SI]	D83C	FDIVR f32[SI]
D805	FADD f32[DI]	D80D	FMUL f32[DI]	D815	FCOM f32[DI]	D81D	FCOMP f32[DI]	D825	FSUB f32[DI]	D82D	FSUBR f32[DI]	D835	FDIV f32[DI]	D83D	FDIVR f32[DI]
D806nn	FADD f32[nn]	D80Enn	FMUL f32[nn]	D816nn	FCOM f32[nn]	D81Enn	FCOMP f32[nn]	D826nn	FSUB f32[nn]	D82Enn	FSUBR f32[nn]	D836nn	FDIV f32[nn]	D83Enn	FDIVR f32[nn]
D807	FADD f32[BX]	D80F	FMUL f32[BX]	D817	FCOM f32[BX]	D81F	FCOMP f32[BX]	D827	FSUB f32[BX]	D82F	FSUBR f32[BX]	D837	FDIV f32[BX]	D83F	FDIVR f32[BX]
D840n	FADD f32[BX+SI+n]	D848n	FMUL f32[BX+SI+n]	D850n	FCOM f32[BX+SI+n]	D858n	FCOMP f32[BX+SI+n]	D860n	FSUB f32[BX+SI+n]	D868n	FSUBR f32[BX+SI+n]	D870n	FDIV f32[BX+SI+n]	D878n	FDIVR f32[BX+SI+n]
D841n	FADD f32[BX+DI+n]	D849n	FMUL f32[BX+DI+n]	D851n	FCOM f32[BX+DI+n]	D859n	FCOMP f32[BX+DI+n]	D861n	FSUB f32[BX+DI+n]	D869n	FSUBR f32[BX+DI+n]	D871n	FDIV f32[BX+DI+n]	D879n	FDIVR f32[BX+DI+n]
D842n	FADD f32[BP+SI+n]	D84An	FMUL f32[BP+SI+n]	D852n	FCOM f32[BP+SI+n]	D85An	FCOMP f32[BP+SI+n]	D862n	FSUB f32[BP+SI+n]	D86An	FSUBR f32[BP+SI+n]	D872n	FDIV f32[BP+SI+n]	D87An	FDIVR f32[BP+SI+n]
D843n	FADD f32[BP+DI+n]	D84Bn	FMUL f32[BP+DI+n]	D853n	FCOM f32[BP+DI+n]	D85Bn	FCOMP f32[BP+DI+n]	D863n	FSUB f32[BP+DI+n]	D86Bn	FSUBR f32[BP+DI+n]	D873n	FDIV f32[BP+DI+n]	D87Bn	FDIVR f32[BP+DI+n]
D844n	FADD f32[SI+n]	D84Cn	FMUL f32[SI+n]	D854n	FCOM f32[SI+n]	D85Cn	FCOMP f32[SI+n]	D864n	FSUB f32[SI+n]	D86Cn	FSUBR f32[SI+n]	D874n	FDIV f32[SI+n]	D87Cn	FDIVR f32[SI+n]
D845n	FADD f32[DI+n]	D84Dn	FMUL f32[DI+n]	D855n	FCOM f32[DI+n]	D85Dn	FCOMP f32[DI+n]	D865n	FSUB f32[DI+n]	D86Dn	FSUBR f32[DI+n]	D875n	FDIV f32[DI+n]	D87Dn	FDIVR f32[DI+n]
D846n	FADD f32[BP+n]	D84En	FMUL f32[BP+n]	D856n	FCOM f32[BP+n]	D85En	FCOMP f32[BP+n]	D866n	FSUB f32[BP+n]	D86En	FSUBR f32[BP+n]	D876n	FDIV f32[BP+n]	D87En	FDIVR f32[BP+n]
D847n	FADD f32[BX+n]	D84Fn	FMUL f32[BX+n]	D857n	FCOM f32[BX+n]	D85Fn	FCOMP f32[BX+n]	D867n	FSUB f32[BX+n]	D86Fn	FSUBR f32[BX+n]	D877n	FDIV f32[BX+n]	D87Fn	FDIVR f32[BX+n]
D880nn	FADD f32[BX+SI+nn]	D888nn	FMUL f32[BX+SI+nn]	D890nn	FCOM f32[BX+SI+nn]	D898nn	FCOMP f32[BX+SI+nn]	D8A0nn	FSUB f32[BX+SI+nn]	D8A8nn	FSUBR f32[BX+SI+nn]	D8B0nn	FDIV f32[BX+SI+nn]	D8B8nn	FDIVR f32[BX+SI+nn]
D881nn	FADD f32[BX+DI+nn]	D889nn	FMUL f32[BX+DI+nn]	D891nn	FCOM f32[BX+DI+nn]	D899nn	FCOMP f32[BX+DI+nn]	D8A1nn	FSUB f32[BX+DI+nn]	D8A9nn	FSUBR f32[BX+DI+nn]	D8B1nn	FDIV f32[BX+DI+nn]	D8B9nn	FDIVR f32[BX+DI+nn]
D882nn	FADD f32[BP+SI+nn]	D88Ann	FMUL f32[BP+SI+nn]	D892nn	FCOM f32[BP+SI+nn]	D89Ann	FCOMP f32[BP+SI+nn]	D8A2nn	FSUB f32[BP+SI+nn]	D8AAnn	FSUBR f32[BP+SI+nn]	D8B2nn	FDIV f32[BP+SI+nn]	D8BAnn	FDIVR f32[BP+SI+nn]
D883nn	FADD f32[BP+DI+nn]	D88Bnn	FMUL f32[BP+DI+nn]	D893nn	FCOM f32[BP+DI+nn]	D89Bnn	FCOMP f32[BP+DI+nn]	D8A3nn	FSUB f32[BP+DI+nn]	D8ABnn	FSUBR f32[BP+DI+nn]	D8B3nn	FDIV f32[BP+DI+nn]	D8BBnn	FDIVR f32[BP+DI+nn]
D884nn	FADD f32[SI+nn]	D88Cnn	FMUL f32[SI+nn]	D894nn	FCOM f32[SI+nn]	D89Cnn	FCOMP f32[SI+nn]	D8A4nn	FSUB f32[SI+nn]	D8ACnn	FSUBR f32[SI+nn]	D8B4nn	FDIV f32[SI+nn]	D8BCnn	FDIVR f32[SI+nn]
D885nn	FADD f32[DI+nn]	D88Dnn	FMUL f32[DI+nn]	D895nn	FCOM f32[DI+nn]	D89Dnn	FCOMP f32[DI+nn]	D8A5nn	FSUB f32[DI+nn]	D8ADnn	FSUBR f32[DI+nn]	D8B5nn	FDIV f32[DI+nn]	D8BDnn	FDIVR f32[DI+nn]
D886nn	FADD f32[BP+nn]	D88Enn	FMUL f32[BP+nn]	D896nn	FCOM f32[BP+nn]	D89Enn	FCOMP f32[BP+nn]	D8A6nn	FSUB f32[BP+nn]	D8AEnn	FSUBR f32[BP+nn]	D8B6nn	FDIV f32[BP+nn]	D8BEnn	FDIVR f32[BP+nn]
D887nn	FADD f32[BX+nn]	D88Fnn	FMUL f32[BX+nn]	D897nn	FCOM f32[BX+nn]	D89Fnn	FCOMP f32[BX+nn]	D8A7nn	FSUB f32[BX+nn]	D8AFnn	FSUBR f32[BX+nn]	D8B7nn	FDIV f32[BX+nn]	D8BFnn	FDIVR f32[BX+nn]
DC00	FADD f64[BX+SI]	DC08	FMUL f64[BX+SI]	DC10	FCOM f64[BX+SI]	DC18	FCOMP f64[BX+SI]	DC20	FSUB f64[BX+SI]	DC28	FSUBR f64[BX+SI]	DC30	FDIV f64[BX+SI]	DC38	FDIVR f64[BX+SI]
DC01	FADD f64[BX+DI]	DC09	FMUL f64[BX+DI]	DC11	FCOM f64[BX+DI]	DC19	FCOMP f64[BX+DI]	DC21	FSUB f64[BX+DI]	DC29	FSUBR f64[BX+DI]	DC31	FDIV f64[BX+DI]	DC39	FDIVR f64[BX+DI]
DC02	FADD f64[BP+SI]	DC0A	FMUL f64[BP+SI]	DC12	FCOM f64[BP+SI]	DC1A	FCOMP f64[BP+SI]	DC22	FSUB f64[BP+SI]	DC2A	FSUBR f64[BP+SI]	DC32	FDIV f64[BP+SI]	DC3A	FDIVR f64[BP+SI]
DC03	FADD f64[BP+DI]	DC0B	FMUL f64[BP+DI]	DC13	FCOM f64[BP+DI]	DC1B	FCOMP f64[BP+DI]	DC23	FSUB f64[BP+DI]	DC2B	FSUBR f64[BP+DI]	DC33	FDIV f64[BP+DI]	DC3B	FDIVR f64[BP+DI]
DC04	FADD f64[SI]	DC0C	FMUL f64[SI]	DC14	FCOM f64[SI]	DC1C	FCOMP f64[SI]	DC24	FSUB f64[SI]	DC2C	FSUBR f64[SI]	DC34	FDIV f64[SI]	DC3C	FDIVR f64[SI]
DC05	FADD f64[DI]	DC0D	FMUL f64[DI]	DC15	FCOM f64[DI]	DC1D	FCOMP f64[DI]	DC25	FSUB f64[DI]	DC2D	FSUBR f64[DI]	DC35	FDIV f64[DI]	DC3D	FDIVR f64[DI]
DC06nn	FADD f64[nn]	DC0Enn	FMUL f64[nn]	DC16nn	FCOM f64[nn]	DC1Enn	FCOMP f64[nn]	DC26nn	FSUB f64[nn]	DC2Enn	FSUBR f64[nn]	DC36nn	FDIV f64[nn]	DC3Enn	FDIVR f64[nn]
DC07	FADD f64[BX]	DC0F	FMUL f64[BX]	DC17	FCOM f64[BX]	DC1F	FCOMP f64[BX]	DC27	FSUB f64[BX]	DC2F	FSUBR f64[BX]	DC37	FDIV f64[BX]	DC3F	FDIVR f64[BX]
DC40n	FADD f64[BX+SI+n]	DC48n	FMUL f64[BX+SI+n]	DC50n	FCOM f64[BX+SI+n]	DC58n	FCOMP f64[BX+SI+n]	DC60n	FSUB f64[BX+SI+n]	DC68n	FSUBR f64[BX+SI+n]	DC70n	FDIV f64[BX+SI+n]	DC78n	FDIVR f64[BX+SI+n]
DC41n	FADD f64[BX+DI+n]	DC49n	FMUL f64[BX+DI+n]	DC51n	FCOM f64[BX+DI+n]	DC59n	FCOMP f64[BX+DI+n]	DC61n	FSUB f64[BX+DI+n]	DC69n	FSUBR f64[BX+DI+n]	DC71n	FDIV f64[BX+DI+n]	DC79n	FDIVR f64[BX+DI+n]
DC42n	FADD f64[BP+SI+n]	DC4An	FMUL f64[BP+SI+n]	DC52n	FCOM f64[BP+SI+n]	DC5An	FCOMP f64[BP+SI+n]	DC62n	FSUB f64[BP+SI+n]	DC6An	FSUBR f64[BP+SI+n]	DC72n	FDIV f64[BP+SI+n]	DC7An	FDIVR f64[BP+SI+n]
DC43n	FADD f64[BP+DI+n]	DC4Bn	FMUL f64[BP+DI+n]	DC53n	FCOM f64[BP+DI+n]	DC5Bn	FCOMP f64[BP+DI+n]	DC63n	FSUB f64[BP+DI+n]	DC6Bn	FSUBR f64[BP+DI+n]	DC73n	FDIV f64[BP+DI+n]	DC7Bn	FDIVR f64[BP+DI+n]
DC44n	FADD f64[SI+n]	DC4Cn	FMUL f64[SI+n]	DC54n	FCOM f64[SI+n]	DC5Cn	FCOMP f64[SI+n]	DC64n	FSUB f64[SI+n]	DC6Cn	FSUBR f64[SI+n]	DC74n	FDIV f64[SI+n]	DC7Cn	FDIVR f64[SI+n]
DC45n	FADD f64[DI+n]	DC4Dn	FMUL f64[DI+n]	DC55n	FCOM f64[DI+n]	DC5Dn	FCOMP f64[DI+n]	DC65n	FSUB f64[DI+n]	DC6Dn	FSUBR f64[DI+n]	DC75n	FDIV f64[DI+n]	DC7Dn	FDIVR f64[DI+n]
DC46n	FADD f64[BP+n]	DC4En	FMUL f64[BP+n]	DC56n	FCOM f64[BP+n]	DC5En	FCOMP f64[BP+n]	DC66n	FSUB f64[BP+n]	DC6En	FSUBR f64[BP+n]	DC76n	FDIV f64[BP+n]	DC7En	FDIVR f64[BP+n]
DC47n	FADD f64[BX+n]	DC4Fn	FMUL f64[BX+n]	DC57n	FCOM f64[BX+n]	DC5Fn	FCOMP f64[BX+n]	DC67n	FSUB f64[BX+n]	DC6Fn	FSUBR f64[BX+n]	DC77n	FDIV f64[BX+n]	DC7Fn	FDIVR f64[BX+n]
DC80nn	FADD f64[BX+SI+nn]	DC88nn	FMUL f64[BX+SI+nn]	DC90nn	FCOM f64[BX+SI+nn]	DC98nn	FCOMP f64[BX+SI+nn]	DCA0nn	FSUB f64[BX+SI+nn]	DCA8nn	FSUBR f64[BX+SI+nn]	DCB0nn	FDIV f64[BX+SI+nn]	DCB8nn	FDIVR f64[BX+SI+nn]
DC81nn	FADD f64[BX+DI+nn]	DC89nn	FMUL f64[BX+DI+nn]	DC91nn	FCOM f64[BX+DI+nn]	DC99nn	FCOMP f64[BX+DI+nn]	DCA1nn	FSUB f64[BX+DI+nn]	DCA9nn	FSUBR f64[BX+DI+nn]	DCB1nn	FDIV f64[BX+DI+nn]	DCB9nn	FDIVR f64[BX+DI+nn]
DC82nn	FADD f64[BP+SI+nn]	DC8Ann	FMUL f64[BP+SI+nn]	DC92nn	FCOM f64[BP+SI+nn]	DC9Ann	FCOMP f64[BP+SI+nn]	DCA2nn	FSUB f64[BP+SI+nn]	DCAAnn	FSUBR f64[BP+SI+nn]	DCB2nn	FDIV f64[BP+SI+nn]	DCBAnn	FDIVR f64[BP+SI+nn]
DC83nn	FADD f64[BP+DI+nn]	DC8Bnn	FMUL f64[BP+DI+nn]	DC93nn	FCOM f64[BP+DI+nn]	DC9Bnn	FCOMP f64[BP+DI+nn]	DCA3nn	FSUB f64[BP+DI+nn]	DCABnn	FSUBR f64[BP+DI+nn]	DCB3nn	FDIV f64[BP+DI+nn]	DCBBnn	FDIVR f64[BP+DI+nn]
DC84nn	FADD f64[SI+nn]	DC8Cnn	FMUL f64[SI+nn]	DC94nn	FCOM f64[SI+nn]	DC9Cnn	FCOMP f64[SI+nn]	DCA4nn	FSUB f64[SI+nn]	DCACnn	FSUBR f64[SI+nn]	DCB4nn	FDIV f64[SI+nn]	DCBCnn	FDIVR f64[SI+nn]
DC85nn	FADD f64[DI+nn]	DC8Dnn	FMUL f64[DI+nn]	DC95nn	FCOM f64[DI+nn]	DC9Dnn	FCOMP f64[DI+nn]	DCA5nn	FSUB f64[DI+nn]	DCADnn	FSUBR f64[DI+nn]	DCB5nn	FDIV f64[DI+nn]	DCBDnn	FDIVR f64[DI+nn]
DC86nn	FADD f64[BP+nn]	DC8Enn	FMUL f64[BP+nn]	DC96nn	FCOM f64[BP+nn]	DC9Enn	FCOMP f64[BP+nn]	DCA6nn	FSUB f64[BP+nn]	DCAEnn	FSUBR f64[BP+nn]	DCB6nn	FDIV f64[BP+nn]	DCBEnn	FDIVR f64[BP+nn]
DC87nn	FADD f64[BX+nn]	DC8Fnn	FMUL f64[BX+nn]	DC97nn	FCOM f64[BX+nn]	DC9Fnn	FCOMP f64[BX+nn]	DCA7nn	FSUB f64[BX+nn]	DCAFnn	FSUBR f64[BX+nn]	DCB7nn	FDIV f64[BX+nn]	DCBFnn	FDIVR f64[BX+nn]
DE00	FIADD i16[BX+SI]	DE08	FIMUL i16[BX+SI]	DE10	FICOM i16[BX+SI]	DE18	FICOMP i16[BX+SI]	DE20	FISUB i16[BX+SI]	DE28	FISUBR i16[BX+SI]	DE30	FIDIV i16[BX+SI]	DE38	FIDIVR i16[BX+SI]
DE01	FIADD i16[BX+DI]	DE09	FIMUL i16[BX+DI]	DE11	FICOM i16[BX+DI]	DE19	FICOMP i16[BX+DI]	DE21	FISUB i16[BX+DI]	DE29	FISUBR i16[BX+DI]	DE31	FIDIV i16[BX+DI]	DE39	FIDIVR i16[BX+DI]
DE02	FIADD i16[BP+SI]	DE0A	FIMUL i16[BP+SI]	DE12	FICOM i16[BP+SI]	DE1A	FICOMP i16[BP+SI]	DE22	FISUB i16[BP+SI]	DE2A	FISUBR i16[BP+SI]	DE32	FIDIV i16[BP+SI]	DE3A	FIDIVR i16[BP+SI]
DE03	FIADD i16[BP+DI]	DE0B	FIMUL i16[BP+DI]	DE13	FICOM i16[BP+DI]	DE1B	FICOMP i16[BP+DI]	DE23	FISUB i16[BP+DI]	DE2B	FISUBR i16[BP+DI]	DE33	FIDIV i16[BP+DI]	DE3B	FIDIVR i16[BP+DI]
DE04	FIADD i16[SI]	DE0C	FIMUL i16[SI]	DE14	FICOM i16[SI]	DE1C	FICOMP i16[SI]	DE24	FISUB i16[SI]	DE2C	FISUBR i16[SI]	DE34	FIDIV i16[SI]	DE3C	FIDIVR i16[SI]
DE05	FIADD i16[DI]	DE0D	FIMUL i16[DI]	DE15	FICOM i16[DI]	DE1D	FICOMP i16[DI]	DE25	FISUB i16[DI]	DE2D	FISUBR i16[DI]	DE35	FIDIV i16[DI]	DE3D	FIDIVR i16[DI]
DE06nn	FIADD i16[nn]	DE0Enn	FIMUL i16[nn]	DE16nn	FICOM i16[nn]	DE1Enn	FICOMP i16[nn]	DE26nn	FISUB i16[nn]	DE2Enn	FISUBR i16[nn]	DE36nn	FIDIV i16[nn]	DE3Enn	FIDIVR i16[nn]
DE07	FIADD i16[BX]	DE0F	FIMUL i16[BX]	DE17	FICOM i16[BX]	DE1F	FICOMP i16[BX]	DE27	FISUB i16[BX]	DE2F	FISUBR i16[BX]	DE37	FIDIV i16[BX]	DE3F	FIDIVR i16[BX]
DE40n	FIADD i16[BX+SI+n]	DE48n	FIMUL i16[BX+SI+n]	DE50n	FICOM i16[BX+SI+n]	DE58n	FICOMP i16[BX+SI+n]	DE60n	FISUB i16[BX+SI+n]	DE68n	FISUBR i16[BX+SI+n]	DE70n	FIDIV i16[BX+SI+n]	DE78n	FIDIVR i16[BX+SI+n]
DE41n	FIADD i16[BX+DI+n]	DE49n	FIMUL i16[BX+DI+n]	DE51n	FICOM i16[BX+DI+n]	DE59n	FICOMP i16[BX+DI+n]	DE61n	FISUB i16[BX+DI+n]	DE69n	FISUBR i16[BX+DI+n]	DE71n	FIDIV i16[BX+DI+n]	DE79n	FIDIVR i16[BX+DI+n]
DE42n	FIADD i16[BP+SI+n]	DE4An	FIMUL i16[BP+SI+n]	DE52n	FICOM i16[BP+SI+n]	DE5An	FICOMP i16[BP+SI+n]	DE62n	FISUB i16[BP+SI+n]	DE6An	FISUBR i16[BP+SI+n]	DE72n	FIDIV i16[BP+SI+n]	DE7An	FIDIVR i16[BP+SI+n]
DE43n	FIADD i16[BP+DI+n]	DE4Bn	FIMUL i16[BP+DI+n]	DE53n	FICOM i16[BP+DI+n]	DE5Bn	FICOMP i16[BP+DI+n]	DE63n	FISUB i16[BP+DI+n]	DE6Bn	FISUBR i16[BP+DI+n]	DE73n	FIDIV i16[BP+DI+n]	DE7Bn	FIDIVR i16[BP+DI+n]
DE44n	FIADD i16[SI+n]	DE4Cn	FIMUL i16[SI+n]	DE54n	FICOM i16[SI+n]	DE5Cn	FICOMP i16[SI+n]	DE64n	FISUB i16[SI+n]	DE6Cn	FISUBR i16[SI+n]	DE74n	FIDIV i16[SI+n]	DE7Cn	FIDIVR i16[SI+n]
DE45n	FIADD i16[DI+n]	DE4Dn	FIMUL i16[DI+n]	DE55n	FICOM i16[DI+n]	DE5Dn	FICOMP i16[DI+n]	DE65n	FISUB i16[DI+n]	DE6Dn	FISUBR i16[DI+n]	DE75n	FIDIV i16[DI+n]	DE7Dn	FIDIVR i16[DI+n]
DE46n	FIADD i16[BP+n]	DE4En	FIMUL i16[BP+n]	DE56n	FICOM i16[BP+n]	DE5En	FICOMP i16[BP+n]	DE66n	FISUB i16[BP+n]	DE6En	FISUBR i16[BP+n]	DE76n	FIDIV i16[BP+n]	DE7En	FIDIVR i16[BP+n]
DE47n	FIADD i16[BX+n]	DE4Fn	FIMUL i16[BX+n]	DE57n	FICOM i16[BX+n]	DE5Fn	FICOMP i16[BX+n]	DE67n	FISUB i16[BX+n]	DE6Fn	FISUBR i16[BX+n]	DE77n	FIDIV i16[BX+n]	DE7Fn	FIDIVR i16[BX+n]
DE80nn	FIADD i16[BX+SI+nn]	DE88nn	FIMUL i16[BX+SI+nn]	DE90nn	FICOM i16[BX+SI+nn]	DE98nn	FICOMP i16[BX+SI+nn]	DEA0nn	FISUB i16[BX+SI+nn]	DEA8nn	FISUBR i16[BX+SI+nn]	DEB0nn	FIDIV i16[BX+SI+nn]	DEB8nn	FIDIVR i16[BX+SI+nn]
DE81nn	FIADD i16[BX+DI+nn]	DE89nn	FIMUL i16[BX+DI+nn]	DE91nn	FICOM i16[BX+DI+nn]	DE99nn	FICOMP i16[BX+DI+nn]	DEA1nn	FISUB i16[BX+DI+nn]	DEA9nn	FISUBR i16[BX+DI+nn]	DEB1nn	FIDIV i16[BX+DI+nn]	DEB9nn	FIDIVR i16[BX+DI+nn]
DE82nn	FIADD i16[BP+SI+nn]	DE8Ann	FIMUL i16[BP+SI+nn]	DE92nn	FICOM i16[BP+SI+nn]	DE9Ann	FICOMP i16[BP+SI+nn]	DEA2nn	FISUB i16[BP+SI+nn]	DEAAnn	FISUBR i16[BP+SI+nn]	DEB2nn	FIDIV i16[BP+SI+nn]	DEBAnn	FIDIVR i16[BP+SI+nn]
DE83nn	FIADD i16[BP+DI+nn]	DE8Bnn	FIMUL i16[BP+DI+nn]	DE93nn	FICOM i16[BP+DI+nn]	DE9Bnn	FICOMP i16[BP+DI+nn]	DEA3nn	FISUB i16[BP+DI+nn]	DEABnn	FISUBR i16[BP+DI+nn]	DEB3nn	FIDIV i16[BP+DI+nn]	DEBBnn	FIDIVR i16[BP+DI+nn]
DE84nn	FIADD i16[SI+nn]	DE8Cnn	FIMUL i16[SI+nn]	DE94nn	FICOM i16[SI+nn]	DE9Cnn	FICOMP i16[SI+nn]	DEA4nn	FISUB i16[SI+nn]	DEACnn	FISUBR i16[SI+nn]	DEB4nn	FIDIV i16[SI+nn]	DEBCnn	FIDIVR i16[SI+nn]
DE85nn	FIADD i16[DI+nn]	DE8Dnn	FIMUL i16[DI+nn]	DE95nn	FICOM i16[DI+nn]	DE9Dnn	FICOMP i16[DI+nn]	DEA5nn	FISUB i16[DI+nn]	DEADnn	FISUBR i16[DI+nn]	DEB5nn	FIDIV i16[DI+nn]	DEBDnn	FIDIVR i16[DI+nn]
DE86nn	FIADD i16[BP+nn]	DE8Enn	FIMUL i16[BP+nn]	DE96nn	FICOM i16[BP+nn]	DE9Enn	FICOMP i16[BP+nn]	DEA6nn	FISUB i16[BP+nn]	DEAEnn	FISUBR i16[BP+nn]	DEB6nn	FIDIV i16[BP+nn]	DEBEnn	FIDIVR i16[BP+nn]
DE87nn	FIADD i16[BX+nn]	DE8Fnn	FIMUL i16[BX+nn]	DE97nn	FICOM i16[BX+nn]	DE9Fnn	FICOMP i16[BX+nn]	DEA7nn	FISUB i16[BX+nn]	DEAFnn	FISUBR i16[BX+nn]	DEB7nn	FIDIV i16[BX+nn]	DEBFnn	FIDIVR i16[BX+nn]
DA00	FIADD i32[BX+SI]	DA08	FIMUL i32[BX+SI]	DA10	FICOM i32[BX+SI]	DA18	FICOMP i32[BX+SI]	DA20	FISUB i32[BX+SI]	DA28	FISUBR i32[BX+SI]	DA30	FIDIV i32[BX+SI]	DA38	FIDIVR i32[BX+SI]
DA01	FIADD i32[BX+DI]	DA09	FIMUL i32[BX+DI]	DA11	FICOM i32[BX+DI]	DA19	FICOMP i32[BX+DI]	DA21	FISUB i32[BX+DI]	DA29	FISUBR i32[BX+DI]	DA31	FIDIV i32[BX+DI]	DA39	FIDIVR i32[BX+DI]
DA02	FIADD i32[BP+SI]	DA0A	FIMUL i32[BP+SI]	DA12	FICOM i32[BP+SI]	DA1A	FICOMP i32[BP+SI]	DA22	FISUB i32[BP+SI]	DA2A	FISUBR i32[BP+SI]	DA32	FIDIV i32[BP+SI]	DA3A	FIDIVR i32[BP+SI]
DA03	FIADD i32[BP+DI]	DA0B	FIMUL i32[BP+DI]	DA13	FICOM i32[BP+DI]	DA1B	FICOMP i32[BP+DI]	DA23	FISUB i32[BP+DI]	DA2B	FISUBR i32[BP+DI]	DA33	FIDIV i32[BP+DI]	DA3B	FIDIVR i32[BP+DI]
DA04	FIADD i32[SI]	DA0C	FIMUL i32[SI]	DA14	FICOM i32[SI]	DA1C	FICOMP i32[SI]	DA24	FISUB i32[SI]	DA2C	FISUBR i32[SI]	DA34	FIDIV i32[SI]	DA3C	FIDIVR i32[SI]
DA05	FIADD i32[DI]	DA0D	FIMUL i32[DI]	DA15	FICOM i32[DI]	DA1D	FICOMP i32[DI]	DA25	FISUB i32[DI]	DA2D	FISUBR i32[DI]	DA35	FIDIV i32[DI]	DA3D	FIDIVR i32[DI]
DA06nn	FIADD i32[nn]	DA0Enn	FIMUL i32[nn]	DA16nn	FICOM i32[nn]	DA1Enn	FICOMP i32[nn]	DA26nn	FISUB i32[nn]	DA2Enn	FISUBR i32[nn]	DA36nn	FIDIV i32[nn]	DA3Enn	FIDIVR i32[nn]
DA07	FIADD i32[BX]	DA0F	FIMUL i32[BX]	DA17	FICOM i32[BX]	DA1F	FICOMP i32[BX]	DA27	FISUB i32[BX]	DA2F	FISUBR i32[BX]	DA37	FIDIV i32[BX]	DA3F	FIDIVR i32[BX]
DA40n	FIADD i32[BX+SI+n]	DA48n	FIMUL i32[BX+SI+n]	DA50n	FICOM i32[BX+SI+n]	DA58n	FICOMP i32[BX+SI+n]	DA60n	FISUB i32[BX+SI+n]	DA68n	FISUBR i32[BX+SI+n]	DA70n	FIDIV i32[BX+SI+n]	DA78n	FIDIVR i32[BX+SI+n]
DA41n	FIADD i32[BX+DI+n]	DA49n	FIMUL i32[BX+DI+n]	DA51n	FICOM i32[BX+DI+n]	DA59n	FICOMP i32[BX+DI+n]	DA61n	FISUB i32[BX+DI+n]	DA69n	FISUBR i32[BX+DI+n]	DA71n	FIDIV i32[BX+DI+n]	DA79n	FIDIVR i32[BX+DI+n]
DA42n	FIADD i32[BP+SI+n]	DA4An	FIMUL i32[BP+SI+n]	DA52n	FICOM i32[BP+SI+n]	DA5An	FICOMP i32[BP+SI+n]	DA62n	FISUB i32[BP+SI+n]	DA6An	FISUBR i32[BP+SI+n]	DA72n	FIDIV i32[BP+SI+n]	DA7An	FIDIVR i32[BP+SI+n]
DA43n	FIADD i32[BP+DI+n]	DA4Bn	FIMUL i32[BP+DI+n]	DA53n	FICOM i32[BP+DI+n]	DA5Bn	FICOMP i32[BP+DI+n]	DA63n	FISUB i32[BP+DI+n]	DA6Bn	FISUBR i32[BP+DI+n]	DA73n	FIDIV i32[BP+DI+n]	DA7Bn	FIDIVR i32[BP+DI+n]
DA44n	FIADD i32[SI+n]	DA4Cn	FIMUL i32[SI+n]	DA54n	FICOM i32[SI+n]	DA5Cn	FICOMP i32[SI+n]	DA64n	FISUB i32[SI+n]	DA6Cn	FISUBR i32[SI+n]	DA74n	FIDIV i32[SI+n]	DA7Cn	FIDIVR i32[SI+n]
DA45n	FIADD i32[DI+n]	DA4Dn	FIMUL i32[DI+n]	DA55n	FICOM i32[DI+n]	DA5Dn	FICOMP i32[DI+n]	DA65n	FISUB i32[DI+n]	DA6Dn	FISUBR i32[DI+n]	DA75n	FIDIV i32[DI+n]	DA7Dn	FIDIVR i32[DI+n]
DA46n	FIADD i32[BP+n]	DA4En	FIMUL i32[BP+n]	DA56n	FICOM i32[BP+n]	DA5En	FICOMP i32[BP+n]	DA66n	FISUB i32[BP+n]	DA6En	FISUBR i32[BP+n]	DA76n	FIDIV i32[BP+n]	DA7En	FIDIVR i32[BP+n]
DA47n	FIADD i32[BX+n]	DA4Fn	FIMUL i32[BX+n]	DA57n	FICOM i32[BX+n]	DA5Fn	FICOMP i32[BX+n]	DA67n	FISUB i32[BX+n]	DA6Fn	FISUBR i32[BX+n]	DA77n	FIDIV i32[BX+n]	DA7Fn	FIDIVR i32[BX+n]
DA80nn	FIADD i32[BX+SI+nn]	DA88nn	FIMUL i32[BX+SI+nn]	DA90nn	FICOM i32[BX+SI+nn]	DA98nn	FICOMP i32[BX+SI+nn]	DAA0nn	FISUB i32[BX+SI+nn]	DAA8nn	FISUBR i32[BX+SI+nn]	DAB0nn	FIDIV i32[BX+SI+nn]	DAB8nn	FIDIVR i32[BX+SI+nn]
DA81nn	FIADD i32[BX+DI+nn]	DA89nn	FIMUL i32[BX+DI+nn]	DA91nn	FICOM i32[BX+DI+nn]	DA99nn	FICOMP i32[BX+DI+nn]	DAA1nn	FISUB i32[BX+DI+nn]	DAA9nn	FISUBR i32[BX+DI+nn]	DAB1nn	FIDIV i32[BX+DI+nn]	DAB9nn	FIDIVR i32[BX+DI+nn]
DA82nn	FIADD i32[BP+SI+nn]	DA8Ann	FIMUL i32[BP+SI+nn]	DA92nn	FICOM i32[BP+SI+nn]	DA9Ann	FICOMP i32[BP+SI+nn]	DAA2nn	FISUB i32[BP+SI+nn]	DAAAnn	FISUBR i32[BP+SI+nn]	DAB2nn	FIDIV i32[BP+SI+nn]	DABAnn	FIDIVR i32[BP+SI+nn]
DA83nn	FIADD i32[BP+DI+nn]	DA8Bnn	FIMUL i32[BP+DI+nn]	DA93nn	FICOM i32[BP+DI+nn]	DA9Bnn	FICOMP i32[BP+DI+nn]	DAA3nn	FISUB i32[BP+DI+nn]	DAABnn	FISUBR i32[BP+DI+nn]	DAB3nn	FIDIV i32[BP+DI+nn]	DABBnn	FIDIVR i32[BP+DI+nn]
DA84nn	FIADD i32[SI+nn]	DA8Cnn	FIMUL i32[SI+nn]	DA94nn	FICOM i32[SI+nn]	DA9Cnn	FICOMP i32[SI+nn]	DAA4nn	FISUB i32[SI+nn]	DAACnn	FISUBR i32[SI+nn]	DAB4nn	FIDIV i32[SI+nn]	DABCnn	FIDIVR i32[SI+nn]
DA85nn	FIADD i32[DI+nn]	DA8Dnn	FIMUL i32[DI+nn]	DA95nn	FICOM i32[DI+nn]	DA9Dnn	FICOMP i32[DI+nn]	DAA5nn	FISUB i32[DI+nn]	DAADnn	FISUBR i32[DI+nn]	DAB5nn	FIDIV i32[DI+nn]	DABDnn	FIDIVR i32[DI+nn]
DA86nn	FIADD i32[BP+nn]	DA8Enn	FIMUL i32[BP+nn]	DA96nn	FICOM i32[BP+nn]	DA9Enn	FICOMP i32[BP+nn]	DAA6nn	FISUB i32[BP+nn]	DAAEnn	FISUBR i32[BP+nn]	DAB6nn	FIDIV i32[BP+nn]	DABEnn	FIDIVR i32[BP+nn]
DA87nn	FIADD i32[BX+nn]	DA8Fnn	FIMUL i32[BX+nn]	DA97nn	FICOM i32[BX+nn]	DA9Fnn	FICOMP i32[BX+nn]	DAA7nn	FISUB i32[BX+nn]	DAAFnn	FISUBR i32[BX+nn]	DAB7nn	FIDIV i32[BX+nn]	DABFnn	FIDIVR i32[BX+nn]
D8C0	FADD ST,ST0	D8C8	FMUL ST,ST0	D8D0	FCOM ST0	D8D8	FCOMP ST0	D8E0	FSUB ST,ST0	D8E8	FSUBR ST,ST0	D8F0	FDIV ST,ST0	D8F8	FDIVR ST,ST0
D8C1	FADD ST,ST1	D8C9	FMUL ST,ST1	D8D1	FCOM ST1	D8D9	FCOMP ST1	D8E1	FSUB ST,ST1	D8E9	FSUBR ST,ST1	D8F1	FDIV ST,ST1	D8F9	FDIVR ST,ST1
D8C2	FADD ST,ST2	D8CA	FMUL ST,ST2	D8D2	FCOM ST2	D8DA	FCOMP ST2	D8E2	FSUB ST,ST2	D8EA	FSUBR ST,ST2	D8F2	FDIV ST,ST2	D8FA	FDIVR ST,ST2
D8C3	FADD ST,ST3	D8CB	FMUL ST,ST3	D8D3	FCOM ST3	D8DB	FCOMP ST3	D8E3	FSUB ST,ST3	D8EB	FSUBR ST,ST3	D8F3	FDIV ST,ST3	D8FB	FDIVR ST,ST3
D8C4	FADD ST,ST4	D8CC	FMUL ST,ST4	D8D4	FCOM ST4	D8DC	FCOMP ST4	D8E4	FSUB ST,ST4	D8EC	FSUBR ST,ST4	D8F4	FDIV ST,ST4	D8FC	FDIVR ST,ST4
D8C5	FADD ST,ST5	D8CD	FMUL ST,ST5	D8D5	FCOM ST5	D8DD	FCOMP ST5	D8E5	FSUB ST,ST5	D8ED	FSUBR ST,ST5	D8F5	FDIV ST,ST5	D8FD	FDIVR ST,ST5
D8C6	FADD ST,ST6	D8CE	FMUL ST,ST6	D8D6	FCOM ST6	D8DE	FCOMP ST6	D8E6	FSUB ST,ST6	D8EE	FSUBR ST,ST6	D8F6	FDIV ST,ST6	D8FE	FDIVR ST,ST6
D8C7	FADD ST,ST7	D8CF	FMUL ST,ST7	D8D7	FCOM ST7	D8DF	FCOMP ST7	D8E7	FSUB ST,ST7	D8EF	FSUBR ST,ST7	D8F7	FDIV ST,ST7	D8FF	FDIVR ST,ST7
DCC0	FADD ST0,ST	DCC8	FMUL ST0,ST					DCE0	FSUBR ST0,ST	DCE8	FSUB ST0,ST	DCF0	FDIVR ST0,ST	DCF8	FDIV ST0,ST
DCC1	FADD ST1,ST	DCC9	FMUL ST1,ST					DCE1	FSUBR ST1,ST	DCE9	FSUB ST1,ST	DCF1	FDIVR ST1,ST	DCF9	FDIV ST1,ST
DCC2	FADD ST2,ST	DCCA	FMUL ST2,ST					DCE2	FSUBR ST2,ST	DCEA	FSUB ST2,ST	DCF2	FDIVR ST2,ST	DCFA	FDIV ST2,ST
DCC3	FADD ST3,ST	DCCB	FMUL ST3,ST					DCE3	FSUBR ST3,ST	DCEB	FSUB ST3,ST	DCF3	FDIVR ST3,ST	DCFB	FDIV ST3,ST
DCC4	FADD ST4,ST	DCCC	FMUL ST4,ST					DCE4	FSUBR ST4,ST	DCEC	FSUB ST4,ST	DCF4	FDIVR ST4,ST	DCFC	FDIV ST4,ST
DCC5	FADD ST5,ST	DCCD	FMUL ST5,ST					DCE5	FSUBR ST5,ST	DCED	FSUB ST5,ST	DCF5	FDIVR ST5,ST	DCFD	FDIV ST5,ST
DCC6	FADD ST6,ST	DCCE	FMUL ST6,ST					DCE6	FSUBR ST6,ST	DCEE	FSUB ST6,ST	DCF6	FDIVR ST6,ST	DCFE	FDIV ST6,ST
DCC7	FADD ST7,ST	DCCF	FMUL ST7,ST					DCE7	FSUBR ST7,ST	DCEF	FSUB ST7,ST	DCF7	FDIVR ST7,ST	DCFF	FDIV ST7,ST
DEC0	FADDP ST0,ST	DEC8	FMULP ST0,ST	DED0	FCOMP ST0			DEE0	FSUBRP ST0,ST	DEE8	FSUBP ST0,ST	DEF0	FDIVRP ST0,ST	DEF8	FDIVP ST0,ST
DEC1	FADDP ST1,ST	DEC9	FMULP ST1,ST	DED1	FCOMP ST1	DED9	FCOMPP ST1	DEE1	FSUBRP ST1,ST	DEE9	FSUBP ST1,ST	DEF1	FDIVRP ST1,ST	DEF9	FDIVP ST1,ST
DEC2	FADDP ST2,ST	DECA	FMULP ST2,ST	DED2	FCOMP ST2			DEE2	FSUBRP ST2,ST	DEEA	FSUBP ST2,ST	DEF2	FDIVRP ST2,ST	DEFA	FDIVP ST2,ST
DEC3	FADDP ST3,ST	DECB	FMULP ST3,ST	DED3	FCOMP ST3			DEE3	FSUBRP ST3,ST	DEEB	FSUBP ST3,ST	DEF3	FDIVRP ST3,ST	DEFB	FDIVP ST3,ST
DEC4	FADDP ST4,ST	DECC	FMULP ST4,ST	DED4	FCOMP ST4			DEE4	FSUBRP ST4,ST	DEEC	FSUBP ST4,ST	DEF4	FDIVRP ST4,ST	DEFC	FDIVP ST4,ST
DEC5	FADDP ST5,ST	DECD	FMULP ST5,ST	DED5	FCOMP ST5			DEE5	FSUBRP ST5,ST	DEED	FSUBP ST5,ST	DEF5	FDIVRP ST5,ST	DEFD	FDIVP ST5,ST
DEC6	FADDP ST6,ST	DECE	FMULP ST6,ST	DED6	FCOMP ST6			DEE6	FSUBRP ST6,ST	DEEE	FSUBP ST6,ST	DEF6	FDIVRP ST6,ST	DEFE	FDIVP ST6,ST
DEC7	FADDP ST7,ST	DECF	FMULP ST7,ST	DED7	FCOMP ST7			DEE7	FSUBRP ST7,ST	DEEF	FSUBP ST7,ST	DEF7	FDIVRP ST7,ST	DEFF	FDIVP ST7,ST
DAC0	FCMOVB ST0	DAC8	FCMOVE ST0	DAD0	FCMOVB ST0	DAD8	FCMOVU ST0
DAC1	FCMOVB ST1	DAC9	FCMOVE ST1	DAD1	FCMOVB ST1	DAD9	FCMOVU ST1			DAE9	FUCOMP
DAC2	FCMOVB ST2	DACA	FCMOVE ST2	DAD2	FCMOVB ST2	DADA	FCMOVU ST2
DAC3	FCMOVB ST3	DACB	FCMOVE ST3	DAD3	FCMOVB ST3	DADB	FCMOVU ST3
DAC4	FCMOVB ST4	DACC	FCMOVE ST4	DAD4	FCMOVB ST4	DADC	FCMOVU ST4
DAC5	FCMOVB ST5	DACD	FCMOVE ST5	DAD5	FCMOVB ST5	DADD	FCMOVU ST5
DAC6	FCMOVB ST6	DACE	FCMOVE ST6	DAD6	FCMOVB ST6	DADE	FCMOVU ST6
DAC7	FCMOVB ST7	DACF	FCMOVE ST7	DAD7	FCMOVB ST7	DADF	FCMOVU ST7
Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo
D900	FLD f32[BX+SI]	D910	FST f32[BX+SI]	D918	FSTP f32[BX+SI]	D938	FSTCW u16[BX+SI]	D920	FLDENV env[BX+SI]	D930	FSTENV env[BX+SI]	D928	FLDCW u16[BX+SI]
D901	FLD f32[BX+DI]	D911	FST f32[BX+DI]	D919	FSTP f32[BX+DI]	D939	FSTCW u16[BX+DI]	D921	FLDENV env[BX+DI]	D931	FSTENV env[BX+DI]	D929	FLDCW u16[BX+DI]
D902	FLD f32[BP+SI]	D912	FST f32[BP+SI]	D91A	FSTP f32[BP+SI]	D93A	FSTCW u16[BP+SI]	D922	FLDENV env[BP+SI]	D932	FSTENV env[BP+SI]	D92A	FLDCW u16[BP+SI]
D903	FLD f32[BP+DI]	D913	FST f32[BP+DI]	D91B	FSTP f32[BP+DI]	D93B	FSTCW u16[BP+DI]	D923	FLDENV env[BP+DI]	D933	FSTENV env[BP+DI]	D92B	FLDCW u16[BP+DI]
D904	FLD f32[SI]	D914	FST f32[SI]	D91C	FSTP f32[SI]	D93C	FSTCW u16[SI]	D924	FLDENV env[SI]	D934	FSTENV env[SI]	D92C	FLDCW u16[SI]
D905	FLD f32[DI]	D915	FST f32[DI]	D91D	FSTP f32[DI]	D93D	FSTCW u16[DI]	D925	FLDENV env[DI]	D935	FSTENV env[DI]	D92D	FLDCW u16[DI]
D906nn	FLD f32[nn]	D916nn	FST f32[nn]	D91Enn	FSTP f32[nn]	D93Enn	FSTCW u16[nn]	D926nn	FLDENV env[nn]	D936nn	FSTENV env[nn]	D92Enn	FLDCW u16[nn]
D907	FLD f32[BX]	D917	FST f32[BX]	D91F	FSTP f32[BX]	D93F	FSTCW u16[BX]	D927	FLDENV env[BX]	D937	FSTENV env[BX]	D92F	FLDCW u16[BX]
D940n	FLD f32[BX+SI+n]	D950n	FST f32[BX+SI+n]	D958n	FSTP f32[BX+SI+n]	D978n	FSTCW u16[BX+SI+n]	D960n	FLDENV env[BX+SI+n]	D970n	FSTENV env[BX+SI+n]	D968n	FLDCW u16[BX+SI+n]
D941n	FLD f32[BX+DI+n]	D951n	FST f32[BX+DI+n]	D959n	FSTP f32[BX+DI+n]	D979n	FSTCW u16[BX+DI+n]	D961n	FLDENV env[BX+DI+n]	D971n	FSTENV env[BX+DI+n]	D969n	FLDCW u16[BX+DI+n]
D942n	FLD f32[BP+SI+n]	D952n	FST f32[BP+SI+n]	D95An	FSTP f32[BP+SI+n]	D97An	FSTCW u16[BP+SI+n]	D962n	FLDENV env[BP+SI+n]	D972n	FSTENV env[BP+SI+n]	D96An	FLDCW u16[BP+SI+n]
D943n	FLD f32[BP+DI+n]	D953n	FST f32[BP+DI+n]	D95Bn	FSTP f32[BP+DI+n]	D97Bn	FSTCW u16[BP+DI+n]	D963n	FLDENV env[BP+DI+n]	D973n	FSTENV env[BP+DI+n]	D96Bn	FLDCW u16[BP+DI+n]
D944n	FLD f32[SI+n]	D954n	FST f32[SI+n]	D95Cn	FSTP f32[SI+n]	D97Cn	FSTCW u16[SI+n]	D964n	FLDENV env[SI+n]	D974n	FSTENV env[SI+n]	D96Cn	FLDCW u16[SI+n]
D945n	FLD f32[DI+n]	D955n	FST f32[DI+n]	D95Dn	FSTP f32[DI+n]	D97Dn	FSTCW u16[DI+n]	D965n	FLDENV env[DI+n]	D975n	FSTENV env[DI+n]	D96Dn	FLDCW u16[DI+n]
D946n	FLD f32[BP+n]	D956n	FST f32[BP+n]	D95En	FSTP f32[BP+n]	D97En	FSTCW u16[BP+n]	D966n	FLDENV env[BP+n]	D976n	FSTENV env[BP+n]	D96En	FLDCW u16[BP+n]
D947n	FLD f32[BX+n]	D957n	FST f32[BX+n]	D95Fn	FSTP f32[BX+n]	D97Fn	FSTCW u16[BX+n]	D967n	FLDENV env[BX+n]	D977n	FSTENV env[BX+n]	D96Fn	FLDCW u16[BX+n]
D980nn	FLD f32[BX+SI+nn]	D990nn	FST f32[BX+SI+nn]	D998nn	FSTP f32[BX+SI+nn]	D9B8nn	FSTCW u16[BX+SI+nn]	D9A0nn	FLDENV env[BX+SI+nn]	D9B0nn	FSTENV env[BX+SI+nn]	D9A8nn	FLDCW u16[BX+SI+nn]
D981nn	FLD f32[BX+DI+nn]	D991nn	FST f32[BX+DI+nn]	D999nn	FSTP f32[BX+DI+nn]	D9B9nn	FSTCW u16[BX+DI+nn]	D9A1nn	FLDENV envBX+DI+nn	D9B1nn	FSTENV envBX+DI+nn	D9A9nn	FLDCW u16[BX+DI+nn]
D982nn	FLD f32[BP+SI+nn]	D992nn	FST f32[BP+SI+nn]	D99Ann	FSTP f32[BP+SI+nn]	D9BAnn	FSTCW u16[BP+SI+nn]	D9A2nn	FLDENV envBP+SI+nn	D9B2nn	FSTENV envBP+SI+nn	D9AAnn	FLDCW u16[BP+SI+nn]
D983nn	FLD f32[BP+DI+nn]	D993nn	FST f32[BP+DI+nn]	D99Bnn	FSTP f32[BP+DI+nn]	D9BBnn	FSTCW u16[BP+DI+nn]	D9A3nn	FLDENV envBP+DI+nn	D9B3nn	FSTENV envBP+DI+nn	D9ABnn	FLDCW u16[BP+DI+nn]
D984nn	FLD f32[SI+nn]	D994nn	FST f32[SI+nn]	D99Cnn	FSTP f32[SI+nn]	D9BCnn	FSTCW u16[SI+nn]	D9A4nn	FLDENV envSI+nn	D9B4nn	FSTENV envSI+nn	D9ACnn	FLDCW u16[SI+nn]
D985nn	FLD f32[DI+nn]	D995nn	FST f32[DI+nn]	D99Dnn	FSTP f32[DI+nn]	D9BDnn	FSTCW u16[DI+nn]	D9A5nn	FLDENV envDI+nn	D9B5nn	FSTENV envDI+nn	D9ADnn	FLDCW u16[DI+nn]
D986nn	FLD f32[BP+nn]	D996nn	FST f32[BP+nn]	D99Enn	FSTP f32[BP+nn]	D9BEnn	FSTCW u16[BP+nn]	D9A6nn	FLDENV envBP+nn	D9B6nn	FSTENV envBP+nn	D9AEnn	FLDCW u16[BP+nn]
D987nn	FLD f32[BX+nn]	D997nn	FST f32[BX+nn]	D99Fnn	FSTP f32[BX+nn]	D9BFnn	FSTCW u16[BX+nn]	D9A7nn	FLDENV envBX+nn	D9B7nn	FSTENV envBX+nn	D9AFnn	FLDCW u16[BX+nn]
DD00	FLD f64[BX+SI]	DD10	FST f64[BX+SI]	DD18	FSTP f64[BX+SI]	DD38	FSTSW u16[BX+SI]	DD20	FRSTOR stt[BX+SI]	DD30	FSAVE stt[BX+SI]
DD01	FLD f64[BX+DI]	DD11	FST f64[BX+DI]	DD19	FSTP f64[BX+DI]	DD39	FSTSW u16[BX+DI]	DD21	FRSTOR stt[BX+DI]	DD31	FSAVE stt[BX+DI]
DD02	FLD f64[BP+SI]	DD12	FST f64[BP+SI]	DD1A	FSTP f64[BP+SI]	DD3A	FSTSW u16[BP+SI]	DD22	FRSTOR stt[BP+SI]	DD32	FSAVE stt[BP+SI]
DD03	FLD f64[BP+DI]	DD13	FST f64[BP+DI]	DD1B	FSTP f64[BP+DI]	DD3B	FSTSW u16[BP+DI]	DD23	FRSTOR stt[BP+DI]	DD33	FSAVE stt[BP+DI]
DD04	FLD f64[SI]	DD14	FST f64[SI]	DD1C	FSTP f64[SI]	DD3C	FSTSW u16[SI]	DD24	FRSTOR stt[SI]	DD34	FSAVE stt[SI]
DD05	FLD f64[DI]	DD15	FST f64[DI]	DD1D	FSTP f64[DI]	DD3D	FSTSW u16[DI]	DD25	FRSTOR stt[DI]	DD35	FSAVE stt[DI]
DD06nn	FLD f64[nn]	DD16nn	FST f64[nn]	DD1Enn	FSTP f64[nn]	DD3Enn	FSTSW u16[nn]	DD26nn	FRSTOR stt[nn]	DD36nn	FSAVE stt[nn]
DD07	FLD f64[BX]	DD17	FST f64[BX]	DD1F	FSTP f64[BX]	DD3F	FSTSW u16[BX]	DD27	FRSTOR stt[BX]	DD37	FSAVE stt[BX]
DD40n	FLD f64[BX+SI+n]	DD50n	FST f64[BX+SI+n]	DD58n	FSTP f64[BX+SI+n]	DD78n	FSTSW u16[BX+SI+n]	DD60n	FRSTOR stt[BX+SI+n]	DD70n	FSAVE stt[BX+SI+n]
DD41n	FLD f64[BX+DI+n]	DD51n	FST f64[BX+DI+n]	DD59n	FSTP f64[BX+DI+n]	DD79n	FSTSW u16[BX+DI+n]	DD61n	FRSTOR stt[BX+DI+n]	DD71n	FSAVE stt[BX+DI+n]
DD42n	FLD f64[BP+SI+n]	DD52n	FST f64[BP+SI+n]	DD5An	FSTP f64[BP+SI+n]	DD7An	FSTSW u16[BP+SI+n]	DD62n	FRSTOR stt[BP+SI+n]	DD72n	FSAVE stt[BP+SI+n]
DD43n	FLD f64[BP+DI+n]	DD53n	FST f64[BP+DI+n]	DD5Bn	FSTP f64[BP+DI+n]	DD7Bn	FSTSW u16[BP+DI+n]	DD63n	FRSTOR stt[BP+DI+n]	DD73n	FSAVE stt[BP+DI+n]
DD44n	FLD f64[SI+n]	DD54n	FST f64[SI+n]	DD5Cn	FSTP f64[SI+n]	DD7Cn	FSTSW u16[SI+n]	DD64n	FRSTOR stt[SI+n]	DD74n	FSAVE stt[SI+n]
DD45n	FLD f64[DI+n]	DD55n	FST f64[DI+n]	DD5Dn	FSTP f64[DI+n]	DD7Dn	FSTSW u16[DI+n]	DD65n	FRSTOR stt[DI+n]	DD75n	FSAVE stt[DI+n]
DD46n	FLD f64[BP+n]	DD56n	FST f64[BP+n]	DD5En	FSTP f64[BP+n]	DD7En	FSTSW u16[BP+n]	DD66n	FRSTOR stt[BP+n]	DD76n	FSAVE stt[BP+n]
DD47n	FLD f64[BX+n]	DD57n	FST f64[BX+n]	DD5Fn	FSTP f64[BX+n]	DD7Fn	FSTSW u16[BX+n]	DD67n	FRSTOR stt[BX+n]	DD77n	FSAVE stt[BX+n]
DD80nn	FLD f64[BX+SI+nn]	DD90nn	FST f64[BX+SI+nn]	DD98nn	FSTP f64[BX+SI+nn]	DDB8nn	FSTSW u16[BX+SI+nn]	DDA0nn	FRSTOR stt[BX+SI+nn]	DDB0nn	FSAVE stt[BX+SI+nn]
DD81nn	FLD f64[BX+DI+nn]	DD91nn	FST f64[BX+DI+nn]	DD99nn	FSTP f64[BX+DI+nn]	DDB9nn	FSTSW u16[BX+DI+nn]	DDA1nn	FRSTOR stt[BX+DI+nn]	DDB1nn	FSAVE stt[BX+DI+nn]
DD82nn	FLD f64[BP+SI+nn]	DD92nn	FST f64[BP+SI+nn]	DD9Ann	FSTP f64[BP+SI+nn]	DDBAnn	FSTSW u16[BP+SI+nn]	DDA2nn	FRSTOR stt[BP+SI+nn]	DDB2nn	FSAVE stt[BP+SI+nn]
DD83nn	FLD f64[BP+DI+nn]	DD93nn	FST f64[BP+DI+nn]	DD9Bnn	FSTP f64[BP+DI+nn]	DDBBnn	FSTSW u16[BP+DI+nn]	DDA3nn	FRSTOR stt[BP+DI+nn]	DDB3nn	FSAVE stt[BP+DI+nn]
DD84nn	FLD f64[SI+nn]	DD94nn	FST f64[SI+nn]	DD9Cnn	FSTP f64[SI+nn]	DDBCnn	FSTSW u16[SI+nn]	DDA4nn	FRSTOR stt[SI+nn]	DDB4nn	FSAVE stt[SI+nn]
DD85nn	FLD f64[DI+nn]	DD95nn	FST f64[DI+nn]	DD9Dnn	FSTP f64[DI+nn]	DDBDnn	FSTSW u16[DI+nn]	DDA5nn	FRSTOR stt[DI+nn]	DDB5nn	FSAVE stt[DI+nn]
DD86nn	FLD f64[BP+nn]	DD96nn	FST f64[BP+nn]	DD9Enn	FSTP f64[BP+nn]	DDBEnn	FSTSW u16[BP+nn]	DDA6nn	FRSTOR stt[BP+nn]	DDB6nn	FSAVE stt[BP+nn]
DD87nn	FLD f64[BX+nn]	DD97nn	FST f64[BX+nn]	DD9Fnn	FSTP f64[BX+nn]	DDBFnn	FSTSW u16[BX+nn]	DDA7nn	FRSTOR stt[BX+nn]	DDB7nn	FSAVE stt[BX+nn]
DF00	FILD i16[BX+SI]	DF10	FIST i16[BX+SI]	DF18	FISTP i16[BX+SI]	DF38	FISTP i64[BX+SI]	DF20	FBLD bcd[BX+SI]	DF30	FBSTP bcd[BX+SI]	DF28	FILD i64[BX+SI]
DF01	FILD i16[BX+DI]	DF11	FIST i16[BX+DI]	DF19	FISTP i16[BX+DI]	DF39	FISTP i64[BX+DI]	DF21	FBLD bcd[BX+DI]	DF31	FBSTP bcd[BX+DI]	DF29	FILD i64[BX+DI]
DF02	FILD i16[BP+SI]	DF12	FIST i16[BP+SI]	DF1A	FISTP i16[BP+SI]	DF3A	FISTP i64[BP+SI]	DF22	FBLD bcd[BP+SI]	DF32	FBSTP bcd[BP+SI]	DF2A	FILD i64[BP+SI]
DF03	FILD i16[BP+DI]	DF13	FIST i16[BP+DI]	DF1B	FISTP i16[BP+DI]	DF3B	FISTP i64[BP+DI]	DF23	FBLD bcd[BP+DI]	DF33	FBSTP bcd[BP+DI]	DF2B	FILD i64[BP+DI]
DF04	FILD i16[SI]	DF14	FIST i16[SI]	DF1C	FISTP i16[SI]	DF3C	FISTP i64[SI]	DF24	FBLD bcd[SI]	DF34	FBSTP bcd[SI]	DF2C	FILD i64[SI]
DF05	FILD i16[DI]	DF15	FIST i16[DI]	DF1D	FISTP i16[DI]	DF3D	FISTP i64[DI]	DF25	FBLD bcd[DI]	DF35	FBSTP bcd[DI]	DF2D	FILD i64[DI]
DF06nn	FILD i16[nn]	DF16nn	FIST i16[nn]	DF1Enn	FISTP i16[nn]	DF3Enn	FISTP i64[nn]	DF26nn	FBLD bcd[nn]	DF36nn	FBSTP bcd[nn]	DF2Enn	FILD i64[nn]
DF07	FILD i16[BX]	DF17	FIST i16[BX]	DF1F	FISTP i16[BX]	DF3F	FISTP i64[BX]	DF27	FBLD bcd[BX]	DF37	FBSTP bcd[BX]	DF2F	FILD i64[BX]
DF40n	FILD i16[BX+SI+n]	DF50n	FIST i16[BX+SI+n]	DF58n	FISTP i16[BX+SI+n]	DF78n	FISTP i64[BX+SI+n]	DF60n	FBLD bcd[BX+SI+n]	DF70n	FBSTP bcd[BX+SI+n]	DF68n	FILD i64[BX+SI+n]
DF41n	FILD i16[BX+DI+n]	DF51n	FIST i16[BX+DI+n]	DF59n	FISTP i16[BX+DI+n]	DF79n	FISTP i64[BX+DI+n]	DF61n	FBLD bcd[BX+DI+n]	DF71n	FBSTP bcd[BX+DI+n]	DF69n	FILD i64[BX+DI+n]
DF42n	FILD i16[BP+SI+n]	DF52n	FIST i16[BP+SI+n]	DF5An	FISTP i16[BP+SI+n]	DF7An	FISTP i64[BP+SI+n]	DF62n	FBLD bcd[BP+SI+n]	DF72n	FBSTP bcd[BP+SI+n]	DF6An	FILD i64[BP+SI+n]
DF43n	FILD i16[BP+DI+n]	DF53n	FIST i16[BP+DI+n]	DF5Bn	FISTP i16[BP+DI+n]	DF7Bn	FISTP i64[BP+DI+n]	DF63n	FBLD bcd[BP+DI+n]	DF73n	FBSTP bcd[BP+DI+n]	DF6Bn	FILD i64[BP+DI+n]
DF44n	FILD i16[SI+n]	DF54n	FIST i16[SI+n]	DF5Cn	FISTP i16[SI+n]	DF7Cn	FISTP i64[SI+n]	DF64n	FBLD bcd[SI+n]	DF74n	FBSTP bcd[SI+n]	DF6Cn	FILD i64[SI+n]
DF45n	FILD i16[DI+n]	DF55n	FIST i16[DI+n]	DF5Dn	FISTP i16[DI+n]	DF7Dn	FISTP i64[DI+n]	DF65n	FBLD bcd[DI+n]	DF75n	FBSTP bcd[DI+n]	DF6Dn	FILD i64[DI+n]
DF46n	FILD i16[BP+n]	DF56n	FIST i16[BP+n]	DF5En	FISTP i16[BP+n]	DF7En	FISTP i64[BP+n]	DF66n	FBLD bcd[BP+n]	DF76n	FBSTP bcd[BP+n]	DF6En	FILD i64[BP+n]
DF47n	FILD i16[BX+n]	DF57n	FIST i16[BX+n]	DF5Fn	FISTP i16[BX+n]	DF7Fn	FISTP i64[BX+n]	DF67n	FBLD bcd[BX+n]	DF77n	FBSTP bcd[BX+n]	DF6Fn	FILD i64[BX+n]
DF80nn	FILD i16[BX+SI+nn]	DF90nn	FIST i16[BX+SI+nn]	DF98nn	FISTP i16[BX+SI+nn]	DFB8nn	FISTP i64[BX+SI+nn]	DFA0nn	FBLD bcd[BX+SI+nn]	DFB0nn	FBSTP bcd[BX+SI+nn]	DFA8nn	FILD i64[BX+SI+nn]
DF81nn	FILD i16[BX+DI+nn]	DF91nn	FIST i16[BX+DI+nn]	DF99nn	FISTP i16[BX+DI+nn]	DFB9nn	FISTP i64[BX+DI+nn]	DFA1nn	FBLD bcd[BX+DI+nn]	DFB1nn	FBSTP bcd[BX+DI+nn]	DFA9nn	FILD i64[BX+DI+nn]
DF82nn	FILD i16[BP+SI+nn]	DF92nn	FIST i16[BP+SI+nn]	DF9Ann	FISTP i16[BP+SI+nn]	DFBAnn	FISTP i64[BP+SI+nn]	DFA2nn	FBLD bcd[BP+SI+nn]	DFB2nn	FBSTP bcd[BP+SI+nn]	DFAAnn	FILD i64[BP+SI+nn]
DF83nn	FILD i16[BP+DI+nn]	DF93nn	FIST i16[BP+DI+nn]	DF9Bnn	FISTP i16[BP+DI+nn]	DFBBnn	FISTP i64[BP+DI+nn]	DFA3nn	FBLD bcd[BP+DI+nn]	DFB3nn	FBSTP bcd[BP+DI+nn]	DFABnn	FILD i64[BP+DI+nn]
DF84nn	FILD i16[SI+nn]	DF94nn	FIST i16[SI+nn]	DF9Cnn	FISTP i16[SI+nn]	DFBCnn	FISTP i64[SI+nn]	DFA4nn	FBLD bcd[SI+nn]	DFB4nn	FBSTP bcd[SI+nn]	DFACnn	FILD i64[SI+nn]
DF85nn	FILD i16[DI+nn]	DF95nn	FIST i16[DI+nn]	DF9Dnn	FISTP i16[DI+nn]	DFBDnn	FISTP i64[DI+nn]	DFA5nn	FBLD bcd[DI+nn]	DFB5nn	FBSTP bcd[DI+nn]	DFADnn	FILD i64[DI+nn]
DF86nn	FILD i16[BP+nn]	DF96nn	FIST i16[BP+nn]	DF9Enn	FISTP i16[BP+nn]	DFBEnn	FISTP i64[BP+nn]	DFA6nn	FBLD bcd[BP+nn]	DFB6nn	FBSTP bcd[BP+nn]	DFAEnn	FILD i64[BP+nn]
DF87nn	FILD i16[BX+nn]	DF97nn	FIST i16[BX+nn]	DF9Fnn	FISTP i16[BX+nn]	DFBFnn	FISTP i64[BX+nn]	DFA7nn	FBLD bcd[BX+nn]	DFB7nn	FBSTP bcd[BX+nn]	DFAFnn	FILD i64[BX+nn]
DB00	FILD i32[BX+SI]	DB10	FIST i32[BX+SI]	DB18	FISTP i32[BX+SI]	DB38	FSTP f80[BX+SI]					DB28	FLD f80[BX+SI]
DB01	FILD i32[BX+DI]	DB11	FIST i32[BX+DI]	DB19	FISTP i32[BX+DI]	DB39	FSTP f80[BX+DI]					DB29	FLD f80[BX+DI]
DB02	FILD i32[BP+SI]	DB12	FIST i32[BP+SI]	DB1A	FISTP i32[BP+SI]	DB3A	FSTP f80[BP+SI]					DB2A	FLD f80[BP+SI]
DB03	FILD i32[BP+DI]	DB13	FIST i32[BP+DI]	DB1B	FISTP i32[BP+DI]	DB3B	FSTP f80[BP+DI]					DB2B	FLD f80[BP+DI]
DB04	FILD i32[SI]	DB14	FIST i32[SI]	DB1C	FISTP i32[SI]	DB3C	FSTP f80[SI]					DB2C	FLD f80[SI]
DB05	FILD i32[DI]	DB15	FIST i32[DI]	DB1D	FISTP i32[DI]	DB3D	FSTP f80[DI]					DB2D	FLD f80[DI]
DB06nn	FILD i32[nn]	DB16nn	FIST i32[nn]	DB1Enn	FISTP i32[nn]	DB3Enn	FSTP f80[nn]					DB2Enn	FLD f80[nn]
DB07	FILD i32[BX]	DB17	FIST i32[BX]	DB1F	FISTP i32[BX]	DB3F	FSTP f80[BX]					DB2F	FLD f80[BX]
DB40n	FILD i32[BX+SI+n]	DB50n	FIST i32[BX+SI+n]	DB58n	FISTP i32[BX+SI+n]	DB78n	FSTP f80[BX+SI+n]					DB68n	FLD f80[BX+SI+n]
DB41n	FILD i32[BX+DI+n]	DB51n	FIST i32[BX+DI+n]	DB59n	FISTP i32[BX+DI+n]	DB79n	FSTP f80[BX+DI+n]					DB69n	FLD f80[BX+DI+n]
DB42n	FILD i32[BP+SI+n]	DB52n	FIST i32[BP+SI+n]	DB5An	FISTP i32[BP+SI+n]	DB7An	FSTP f80[BP+SI+n]					DB6An	FLD f80[BP+SI+n]
DB43n	FILD i32[BP+DI+n]	DB53n	FIST i32[BP+DI+n]	DB5Bn	FISTP i32[BP+DI+n]	DB7Bn	FSTP f80[BP+DI+n]					DB6Bn	FLD f80[BP+DI+n]
DB44n	FILD i32[SI+n]	DB54n	FIST i32[SI+n]	DB5Cn	FISTP i32[SI+n]	DB7Cn	FSTP f80[SI+n]					DB6Cn	FLD f80[SI+n]
DB45n	FILD i32[DI+n]	DB55n	FIST i32[DI+n]	DB5Dn	FISTP i32[DI+n]	DB7Dn	FSTP f80[DI+n]					DB6Dn	FLD f80[DI+n]
DB46n	FILD i32[BP+n]	DB56n	FIST i32[BP+n]	DB5En	FISTP i32[BP+n]	DB7En	FSTP f80[BP+n]					DB6En	FLD f80[BP+n]
DB47n	FILD i32[BX+n]	DB57n	FIST i32[BX+n]	DB5Fn	FISTP i32[BX+n]	DB7Fn	FSTP f80[BX+n]					DB6Fn	FLD f80[BX+n]
DB80nn	FILD i32[BX+SI+nn]	DB90nn	FIST i32[BX+SI+nn]	DB98nn	FISTP i32[BX+SI+nn]	DBB8nn	FSTP f80[BX+SI+nn]					DBA8nn	FLD f80[BX+SI+nn]
DB81nn	FILD i32[BX+DI+nn]	DB91nn	FIST i32[BX+DI+nn]	DB99nn	FISTP i32[BX+DI+nn]	DBB9nn	FSTP f80[BX+DI+nn]					DBA9nn	FLD f80[BX+DI+nn]
DB82nn	FILD i32[BP+SI+nn]	DB92nn	FIST i32[BP+SI+nn]	DB9Ann	FISTP i32[BP+SI+nn]	DBBAnn	FSTP f80[BP+SI+nn]					DBAAnn	FLD f80[BP+SI+nn]
DB83nn	FILD i32[BP+DI+nn]	DB93nn	FIST i32[BP+DI+nn]	DB9Bnn	FISTP i32[BP+DI+nn]	DBBBnn	FSTP f80[BP+DI+nn]					DBABnn	FLD f80[BP+DI+nn]
DB84nn	FILD i32[SI+nn]	DB94nn	FIST i32[SI+nn]	DB9Cnn	FISTP i32[SI+nn]	DBBCnn	FSTP f80[SI+nn]					DBACnn	FLD f80[SI+nn]
DB85nn	FILD i32[DI+nn]	DB95nn	FIST i32[DI+nn]	DB9Dnn	FISTP i32[DI+nn]	DBBDnn	FSTP f80[DI+nn]					DBADnn	FLD f80[DI+nn]
DB86nn	FILD i32[BP+nn]	DB96nn	FIST i32[BP+nn]	DB9Enn	FISTP i32[BP+nn]	DBBEnn	FSTP f80[BP+nn]					DBAEnn	FLD f80[BP+nn]
DB87nn	FILD i32[BX+nn]	DB97nn	FIST i32[BX+nn]	DB9Fnn	FISTP i32[BX+nn]	DBBFnn	FSTP f80[BX+nn]					DBAFnn	FLD f80[BX+nn]
D9C0	FLD ST0					D9F8	FPREM	D9E0	FCHS	D9F0	F2XM1	D9E8	FLD1	D9C8	FXCH ST0
D9C1	FLD ST1					D9F9	FYL2XP	D9E1	FABS	D9F1	FYL2X	D9E9	FLDL2T	D9C9	FXCH ST1
D9C2	FLD ST2					D9FA	FSQRT			D9F2	FPTAN	D9EA	FLDL2E	D9CA	FXCH ST2
D9C3	FLD ST3					D9FB	FSINCO			D9F3	FPATAN	D9EB	FLDPI	D9CB	FXCH ST3
D9C4	FLD ST4					D9FC	FRNDIN	D9E4	FTST	D9F4	FXTRAC	D9EC	FLDLG2	D9CC	FXCH ST4
D9C5	FLD ST5					D9FD	FSCALE	D9E5	FXAM	D9F5	FPREM1	D9ED	FLDLN2	D9CD	FXCH ST5
D9C6	FLD ST6					D9FE	FSIN			D9F6	FDECST	D9EE	FLDZ	D9CE	FXCH ST6
D9C7	FLD ST7					D9FF	FCOS			D9F7	FINCST			D9CF	FXCH ST7
DDC0	FFREE ST0	DDD0	FST ST0	DDD8	FSTP ST0			DDE0	FCOM ST0			DDE8	FCOMP ST0
DDC1	FFREE ST1	DDD1	FST ST1	DDD9	FSTP ST1			DDE1	FCOM ST1			DDE9	FCOMP ST1
DDC2	FFREE ST2	DDD2	FST ST2	DDDA	FSTP ST2			DDE2	FCOM ST2			DDEA	FCOMP ST2
DDC3	FFREE ST3	DDD3	FST ST3	DDDB	FSTP ST3			DDE3	FCOM ST3			DDEB	FCOMP ST3
DDC4	FFREE ST4	DDD4	FST ST4	DDDC	FSTP ST4			DDE4	FCOM ST4			DDEC	FCOMP ST4
DDC5	FFREE ST5	DDD5	FST ST5	DDDD	FSTP ST5			DDE5	FCOM ST5			DDED	FCOMP ST5
DDC6	FFREE ST6	DDD6	FST ST6	DDDE	FSTP ST6			DDE6	FCOM ST6			DDEE	FCOMP ST6
DDC7	FFREE ST7	DDD7	FST ST7	DDDF	FSTP ST7			DDE7	FCOM ST7			DDEF	FCOMP ST7
DFC0	FFREEP ST0							DFE0	FSTSW AX	DFF0	FCOMIP ST0
DFC1	FFREEP ST1									DFF1	FCOMIP ST1
DFC2	FFREEP ST2									DFF2	FCOMIP ST2
DFC3	FFREEP ST3									DFF3	FCOMIP ST3
DFC4	FFREEP ST4									DFF4	FCOMIP ST4
DFC5	FFREEP ST5									DFF5	FCOMIP ST5
DFC6	FFREEP ST6									DFF6	FCOMIP ST6
DFC7	FFREEP ST7									DFF7	FCOMIP ST7
DBC0	FCMOVN ST0	DBD0	FCMOVN ST0	DBD8	FCMOVN ST0			DBE0	FENI	DBF0	FCOMI ST0			DBC8	FCMOVN ST0
DBC1	FCMOVN ST1	DBD1	FCMOVN ST1	DBD9	FCMOVN ST1			DBE1	FDISI	DBF1	FCOMI ST1			DBC9	FCMOVN ST1
DBC2	FCMOVN ST2	DBD2	FCMOVN ST2	DBDA	FCMOVN ST2			DBE2	FCLEX	DBF2	FCOMI ST2			DBCA	FCMOVN ST2
DBC3	FCMOVN ST3	DBD3	FCMOVN ST3	DBDB	FCMOVN ST3			DBE3	FINIT	DBF3	FCOMI ST3			DBCB	FCMOVN ST3
DBC4	FCMOVN ST4	DBD4	FCMOVN ST4	DBDC	FCMOVN ST4			DBE4	FSETPM	DBF4	FCOMI ST4			DBCC	FCMOVN ST4
DBC5	FCMOVN ST5	DBD5	FCMOVN ST5	DBDD	FCMOVN ST5					DBF5	FCOMI ST5			DBCD	FCMOVN ST5
DBC6	FCMOVN ST6	DBD6	FCMOVN ST6	DBDE	FCMOVN ST6					DBF6	FCOMI ST6			DBCE	FCMOVN ST6
DBC7	FCMOVN ST7	DBD7	FCMOVN ST7	DBDF	FCMOVN ST7					DBF7	FCOMI ST7			DBCF	FCMOVN ST7
Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo	Opcode	Mnemo

References

↑ Shvets, Gennadiy (8 October 2011). "IBM 8087 floating-point unit". CPU World. Retrieved 1 December 2011.
1 2 Shvets, Gennadiy (8 October 2011). "AMD 8087 floating-point unit". CPU World. Retrieved 1 December 2011.
1 2 Shvets, Gennadiy (8 October 2011). "Cyrix 8087 floating-point unit". CPU World. Retrieved 1 December 2011.
1 2 "8087". Coprocessor Dot Info. 2007. Retrieved 1 December 2011.
1 2 3 "Intel FPU". cpu-collection.de. 2011. Retrieved 1 December 2011.
1 2 3 Scott Mueller, Upgrading and repairing PCs, second edition, Que Books, 1992 ISBN 0-88022-856-3, pages 395-403
↑ Intel Component Data Catalog 1980, Intel catalog no. C-864/280/150K/CP, pages 8-21, 8-28
↑ Sanchez & Canton 2007, p. 96.
↑ Patent 4,484,259
↑ Patent 4,270,167
↑ Assembly Language and Systems Programming for the IBM PC and Compatibles, Karen A. Lemone, page 302
1 2 3 Shvets, Gennadiy (8 October 2011). "Intel 8087 family". CPU World. Retrieved 1 December 2011.
↑ Sanchez & Canton 2007, p. 110.
↑ Assembly Language and Systems Programming for the IBM PC and Compatibles, Karen A. Lemone, p300
↑ Frolov, Sergej (10 October 2006). "USSR-made i8087 clone". CPU World. Retrieved 1 December 2011.

Bibliography

Sanchez, Julio; Canton, Maria P. (2007). Software Solutions for Engineers and Scientists. CRC Press. ISBN 1-4200-4302-1.

External links

Intel processors

Discontinued

BCD oriented (4-bit)	4004 (1971) 4040 (1974)

pre-x86 (8-bit)	8008 (1972) 8080 (1974) 8085 (1977)

Early x86 (16-bit)	8086 (1978) 8088 (1979) 80186 (1982) 80188 (1982) 80286 (1982)

x87 (external FPUs)	8/16-bit databus 8087 (1980) 16-bit databus 80187 80287 80387SX 32-bit databus 80387DX 80487

IA-32 (32-bit)	80386 SX 376 EX 80486 SX DX2 DX4 SL RapidCAD OverDrive A100/A110 Celeron (1998) M D (2004) Pentium Original OverDrive Pro II II OverDrive III 4 M Dual-Core Core Solo Duo

x86-64 (64-bit)	Celeron D Dual-Core Pentium 4 D Extreme Edition Dual-Core Core 2 i7 (some)

Other	CISC iAPX 432 RISC i860 i960 StrongARM XScale

Current

IA-32 (32-bit)	Tolapai Atom CE SoC Quark

x86-64 (64-bit)	Atom CE SoC Celeron Pentium Core i3 i5 i7 M Xeon E7 E5 E3 Phi

EPIC	Itanium

Lists

Atom Celeron Core 2 i3 i5 i7 M Itanium Pentium Pro II III 4 D M Xeon

Related

Chipsets PCHs SCHs ICHs PIIXs GPUs Codenames GMA HD and Iris Graphics

Microarchitectures

P5	800 nm P5 600 nm P54C 350 nm P54CS P55C 250 nm Tillamook

P6 / Pentium M / Enhanced Pentium M	500 nm P6 350 nm P6 Klamath 250 nm Mendocino Dixon Tonga Covington Deschutes Katmai Drake Tanner 180 nm Coppermine Coppermine T Timna Cascades 130 nm Tualatin Banias 90 nm Dothan Stealey Tolapai Canmore 65 nm Yonah Sossaman

NetBurst	180 nm Willamette Foster 130 nm Northwood Gallatin Prestonia 90 nm Tejas and Jayhawk Prescott Smithfield Nocona Irwindale Cranford Potomac Paxville 65 nm Cedar Mill Presler Dempsey Tulsa

Core / Penryn	65 nm Merom-L Merom Conroe-L Allendale Conroe Kentsfield Woodcrest Clovertown Tigerton 45 nm Penryn Penryn-QC Wolfdale Yorkfield Wolfdale-DP Harpertown Dunnington

Bonnell / Saltwell	45 nm Silverthorne Diamondville Pineview Lincroft Tunnel Creek Stellarton Sodaville Groveland 32 nm Cedarview Penwell Cloverview Berryville Centerton

Nehalem / Westmere	45 nm Clarksfield Lynnfield Jasper Forest Bloomfield Gainestown (Nehalem-EP) Beckton (Nehalem-EX) 32 nm Arrandale Clarkdale Gulftown (Westmere-EP) Westmere-EX

Sandy Bridge / Ivy Bridge	32 nm Sandy Bridge Sandy Bridge-E Gladden 22 nm Ivy Bridge Ivy Bridge-EP Ivy Bridge-EX

Haswell / Broadwell	22 nm Haswell 14 nm Broadwell

Silvermont / Airmont	22 nm Valleyview Tangier Anniedale 14 nm Cherryview

Skylake/Kaby Lake/Coffee Lake/Cannonlake	14 nm Skylake Kaby Lake Coffee Lake 10 nm Cannonlake

Goldmont	14 nm Goldmont

Future (Icelake/Tigerlake)	10 nm Icelake Tigerlake

Authority control	LCCN: sh85067151 GND: 4129509-2 BNF: cb119701833 (data)

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