List of former IA-32 compatible processor manufacturers
||This article may require cleanup to meet Wikipedia's quality standards. The specific problem is: table formatting is messed up. (January 2014)|
As the 32-bit Intel Architecture became the dominant computing platform during the 1980s and 1990s, multiple companies have tried to build microprocessors that are compatible with that Intel instruction set architecture. Most of these companies were not successful in the mainstream computing market. So far, only AMD has had any market presence in the computing market for more than a couple of product generations. Cyrix was successful during the 386 and 486 generations of products, but did not do well after the Pentium was introduced.
|Original funder of Centaur, later sold off that subsidiary to VIA, no longer in compatible market.||Acquired by National Semiconductor, later acquired by VIA Technologies, eventually shut down|
|Centaur Technology||National Semiconductor||NexGen|
|Originally subsidiary of IDT, later acquired by VIA Technologies, still producing compatible low-end devices for Via||Low-end 486 (designed in-house) never widely sold||Bought by AMD to help develop the successful K6 device|
|First acquirer of Cyrix;||Later keeping only low-end IA-32 devices targeted for consumer System-on-a-chips, finally selling them to AMD|
- Harris Corporation - sold rad-hard versions of 8086 and 80286; product line discontinued.
- NEC - sold early Intel architecture compatibles such as NEC V20 and NEC V30; product line transitioned to NEC internal architecture
- Siemens - sold versions of 8086 and 80286; product line discontinued.
Left the market or closed
- Chips and Technologies - left market after failed 386 compatible chip failed to boot the Windows operating system
- IBM - Cyrix licensee and developer of Blue Lightning 486 line of processors, eventually left compatible chip market
- Rise Technology - after 5 years of working on the slow mP6 chip (released in 1998), the company closed a year later
- Texas Instruments and SGS-Thomson — licensees of Cyrix designs, eventually left compatible chip market
- Transmeta - transitioned to an intellectual property company in 2005.
- United Microelectronics Corporation and Meridian Semiconductor - got out of market after slow 486 compatible missed market window
- Chromatic Research - mediaprocessor with x86 instruction set compatibility never completed
- Exponential Technology - BiCMOS compatible microprocessor never completed
- IIT Corp - 486 compatible project never completed
- MemoryLogix - Multi-threaded CPU core and SOC for PCs never completed
- Metaflow Technologies - project never completed
- Montalvo Systems - Asymmetric multiprocessor never completed
- ULSI System Technology - never completed x86 SOC; company shut down after one of their employees was convicted for stealing Intel Floating-point x87 design documents