Editing List of Intel processors (section)

===The [[16-bit computing|16-bit]] processors: MCS-86 family===
[[File:Intel D8086 CS.jpg|thumb|Intel D8086]]

====[[Intel 8086|8086]]====
* Introduced June 8, 1978
* Clock rates:
** 5&nbsp;MHz, 0.33&nbsp;MIPS<ref name="intel1">{{cite web
| title = Intel Microprocessor Quick Reference Guide – Product Family
| access-date = 2010-01-08
| url = http://www.intel.com/pressroom/kits/quickreffam.htm#i486
| archive-url = https://web.archive.org/web/20100304150628/http://www.intel.com/pressroom/kits/quickreffam.htm#i486
| archive-date = 2010-03-04
| url-status = live
}}</ref>
** 8&nbsp;MHz, 0.66&nbsp;MIPS
** 10&nbsp;MHz, 0.75&nbsp;MIPS
* The memory is divided into odd and even banks. It accesses both banks concurrently to read 16 bits of data in one clock cycle
* Data bus width: 16 bits, address bus: 20 bits
* 29,000 transistors at 3&nbsp;μm
* Addressable memory 1&nbsp;megabyte (1024{{sup|2}}{{nbsp}}B)
* Up to 10× the performance of 8080
* First used in the Compaq Deskpro IBM PC-compatible computers. Later used in portable computing, and in the [[IBM]] [[IBM PS/2|PS/2]] [[IBM PS/2 Model 25|Model 25]] and [[IBM PS/2 Model 30|Model 30]]. Also used in the [[Olivetti M24|AT&T PC6300 / Olivetti M24]], a popular IBM PC-compatible (predating the IBM PS/2 line) and the WANG PC.
* Used [[segment register]]s to access more than 64&nbsp;KB of data at once, which many programmers complained made their work excessively difficult.{{Citation needed|date=March 2012}}
* The first x86 CPU
* Later renamed the iAPX 86<ref name="intel2">Intel IAPX 86,88 User's Manual, August 1981, Intel order number 210201-001</ref>

[[File:Intel D8088.jpg|thumb|Intel D8088]]

====[[Intel 8088|8088]]====
* Introduced June 1, 1979
* Clock rates:
** 4.77&nbsp;MHz, 0.33&nbsp;MIPS
** 8&nbsp;MHz, 0.66&nbsp;MIPS<ref name="intel1"/>
* 16-bit internal architecture
* External data bus width: 8 bits, address bus: 20 bits
* 29,000 transistors at 3&nbsp;μm
* Addressable memory 1&nbsp;megabyte
* Identical to 8086 except for its 8-bit external bus (hence an ''8'' instead of a ''6'' at the end); identical Execution Unit (EU), different Bus Interface Unit (BIU)<ref name="intel2"/>
* Used in [[IBM PC]] and PC-XT and compatibles
* Later renamed the iAPX 88<ref name="intel2"/>

[[File:Intel C80186-6.jpg|thumb|Intel C80186 6&nbsp;MHz]]
====[[Intel 80186|80186]]====
* Introduced 1982
* Clock rates
** 6&nbsp;MHz, > 1&nbsp;MIPS
* 55,000 transistors
* Included two timers, a [[DMA controller]], and an [[interrupt controller]] on the chip in addition to the processor (these were at fixed addresses which differed from the IBM PC, although it was used by several PC compatible vendors such as Australian company Cleveland)
* Added a few opcodes and exceptions to the 8086 design, otherwise identical instruction set to 8086 and 8088
** BOUND, ENTER, LEAVE
** INS, OUTS
** IMUL imm, PUSH imm, PUSHA, POPA
** RCL/RCR/ROL/ROR/SHL/SHR/SAL/SAR reg, imm
* Address calculation and shift operations are faster than 8086
* Used mostly in embedded applications – controllers, point-of-sale systems, terminals, and the like
* Used in several non-PC compatible [[DOS]] computers including [[RM Nimbus]], [[Tandy 2000]], and CP/M 86 Televideo PM16 server
* Later renamed to iAPX 186

====[[Intel 80188|80188]]====
* A version of the 80186 with an 8-bit external data bus
* Later renamed the iAPX 188

[[File:Intel C80286-6.jpg|thumb|Intel C80286 6&nbsp;MHz]]
====[[Intel 80286|80286]]====
* Introduced February 1, 1982
* Clock rates:
** 6&nbsp;MHz, 0.9&nbsp;MIPS
** 8&nbsp;MHz, 10&nbsp;MHz, 1.5&nbsp;MIPS
** 12.5&nbsp;MHz, 2.66&nbsp;MIPS
** 16&nbsp;MHz, 20&nbsp;MHz and 25&nbsp;MHz available.
* Data bus width: 16 bits, address bus: 24 bits
* Included memory protection hardware to support multitasking operating systems with per-process address space.
* 134,000 transistors at [[1.5 μm process|1.5&nbsp;μm]]
* Addressable memory 16&nbsp;[[megabyte|MB]]
* Added protected-mode features to 8086 with essentially the same instruction set
* 3–6× the performance of the 8086
* Widely used in [[IBM PC AT]] and AT clones contemporary to it