The first integrated circuit to implement the draft of what was to become IEEE 754-1985 was the Intel 8087.

Denormal numbers were implemented in the Intel 8087 while the IEEE 754 standard was being written.

Some floating-point units, such as the AMD 9511, Intel I8231 and Weitek FPUs were treated as peripheral devices, while others such as the Intel 8087, Motorola 68881 and National 32081 were more closely integrated with the CPU.

The original IBM PC included a socket for the Intel 8087 floating-point coprocessor ( aka FPU ) which was a popular option for people using the PC for CAD or mathematics-intensive calculations.

The company was founded in 1982 to write software to support the Intel 8087.

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

Intel production of the 8087 was done in Malaysia.

When Intel designed the 8087, it aimed to make a standard floating-point format for future designs.

The 8087 differed from subsequent Intel coprocessors in that it was directly connected to the address and data buses.

Unlike later Intel coprocessors, the 8087 had to run at the same clock speed as the main processor.

# REDIRECT Intel 8087

Examples include the floppy disk controller on the Amstrad PCW, the 8087 coprocessor on the x86 when used in the IBM PC or its compatibles ( even though Intel recommended connecting it to a normal interrupt, causing the error pin on the 287 when used in the IBM PC / AT to be connected to a normal interrupt rather than directly to the 286 error pin, for which the handler jumps to the NMI handler, and later causing Intel, in the 486, to add the MS-DOS compatibility mode to it ), and the Low Battery signal on the HP 95LX.

Since the Intel 8087 ( 1980 ), the x86 architecture supports 80-bit floating points that store and process 64-bit signed integers (- 2 < sup > 63 </ sup >... 2 < sup > 63 </ sup >- 1 ) accurately.

In addition to the Intel architectures, FPUs as coprocessors were available for the Motorola 68000 family line.

The Motorola 68000 family had the 68881 / 68882 coprocessors which provided similar floating-point speed acceleration as for the Intel processors.

Weitek developed math coprocessors for several systems, including those based on the Motorola 68000 family, the 1064, and for Intel based i286 systems, the 1067.

Per a News article on Page # 9 of the October 1984 issue of Acorn User, the Plus 3 was originally destined to have used the Intel 8272 disk controller, ( and not 8271, which were in short supply at the time ).

The first Socket 7 chipsets to support AGP were the VIA Apollo VP3, SiS 5591 / 5592, and the ALI Aladdin V. Intel never released an AGP-equipped Socket 7 chipset.

One limitation ( also afflicting the Intel Pentium III ) is that SRAM cache designs at the time were incapable of keeping up with the Athlon's clock scalability, due both to manufacturing limitations of the cache chips and the difficulty of routing electrical connections to the cache chips themselves.

Microprocessors such as the Intel 8008, the direct predecessor of the 8080 and the 8086, used in early personal computers, could also perform a small number of operations on four bits, such as the DAA ( Decimal Add Adjust ) instruction, and the auxiliary carry ( AC / NA ) flag, which were used to implement decimal arithmetic routines.

Therefore, despite being very fast clock by clock, the 6x86 and MII were forced to compete at the low-end of the market as AMD K6 and Intel P6 Pentium II were always ahead on clock speed.

Some parts of DEC, notably the compiler business and the Hudson, Massachusetts facility, were sold to Intel.

This was based on a proposal from Intel who were designing the i8087 numerical coprocessor.

In theory, real-mode applications could be directly executed in 16-bit protected mode if certain rules were followed ; however, as many DOS programs broke those rules, protected mode was not widely used until the appearance of its successor, the 32-bit Intel 80386, which was designed to go back and forth between modes easily.

In August, after extensive testing E-1 step samples of the 80286, Digital Research acknowledged that Intel corrected all documented 286 errata, but said there were still undocumented chip performance problems with the prerelease version of Concurrent DOS 286 running on the E-1 step.

Similar I / O-port schemes were used in the backward compatible Zilog Z80 and Intel 8085 as well as the closely related x86 families of microprocessors.

The Intel 80C88. The 8088 was targeted at economical systems by allowing the use of an 8-bit data path and 8-bit support and peripheral chips ; complex circuit boards were still fairly cumbersome and expensive when it was released.

The agreement with Intel limited their use to IBM's own line of computers and upgrade boards only, so they were not available on the open market.

Not all of the processors already manufactured were affected, so Intel tested its inventory.

More powerful 486 iterations such as the OverDrive and DX4 were less popular ( the latter available as an OEM part only ), as they came out after Intel had released the next generation P5 Pentium processor family.

There were also unofficial ports to Intel 386 PC compatibles ( in 32-bit protected mode ), National Semiconductor NS32532, ARM and INMOS transputer processors.

The Pilot / Mesa world in later releases moved away from the world swap view when the micro-coded machines were phased out in favor of SPARC workstations and Intel PC's running a Mesa PrincOps emulator for the basic hardware instruction set.

The processors for the first Microvision cartridges were made with both Intel 8021 ( cross licensed by Signetics ) and Texas Instruments TMS1100 processors.

Some IBM PC clone vendors offered somewhat customised hardware solutions that were delivered running NeXTSTEP on Intel, such as the Elonex NextStation and the Canon object. station 41.

At the same time, an Intel port and OpenStep Enterprise toolkit for Windows were both produced.

NeXTSTEP's processor-independent capabilities were retained in Mac OS X, leading to both PowerPC and Intel x86 versions ( although only PowerPC versions were publicly available before 2006 ).

According to Intel, there were a few missing entries in the lookup table used by the digital divide operation algorithm.

Intel offered to replace processors to users who could prove that they were affected.

Some of the defective chips were later turned into key rings by Intel.

It was fabricated in a 0. 28 µm CMOS process with the same metal pitches as the previous 0. 35 µm BiCMOS process, so Intel described it as " 0. 35 µm " because of its similar transistor density.

It was fabricated at DEC's former Hudson, Massachusetts fabrication plant, which was also sold to Intel.