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The '''80386''', also '''i386''' and '''386''', (pronounced ''eighty-three-eighty-six'') was a family of {{arch|32}} 3rd-generation [[x86]] microprocessors introduced by [[Intel]] in [[1985]] as a successor to {{intel|80286}}. These processors provided were fully backwards compatible with previous generations of x86 processors but introduced a number of major new features including enhancements to {{x86|protected mode}} and {{x86|virtual 8086 mode}}. The changes brought about by 386 became the standard for all future {{arch|32}} [[x86]] processors, dubbed [[IA-32|i386-architecture]]. | The '''80386''', also '''i386''' and '''386''', (pronounced ''eighty-three-eighty-six'') was a family of {{arch|32}} 3rd-generation [[x86]] microprocessors introduced by [[Intel]] in [[1985]] as a successor to {{intel|80286}}. These processors provided were fully backwards compatible with previous generations of x86 processors but introduced a number of major new features including enhancements to {{x86|protected mode}} and {{x86|virtual 8086 mode}}. The changes brought about by 386 became the standard for all future {{arch|32}} [[x86]] processors, dubbed [[IA-32|i386-architecture]]. | ||
− | == | + | == History == |
{{empty section}} | {{empty section}} | ||
== Members == | == Members == | ||
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{| class="wikitable" | {| class="wikitable" | ||
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! Model !! Introduction !! Ext. Bus !! Frequency !! Notes | ! Model !! Introduction !! Ext. Bus !! Frequency !! Notes | ||
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− | | {{\| | + | | {{\|80386-12}} || October 1985 || 32-bit || 12 MHz || rowspan="3" | Renamed with "DX" suffix upon the introduction of the "SX" version. |
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− | | {{\| | + | | {{\|80386-16}} || 1985 || 32-bit || 16 MHz |
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− | | {{\| | + | | {{\|80386-20}} || February 1987 || 32-bit || 20 MHz |
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− | | {{\| | + | | {{\|80386DX-16}} || 1988 || 32-bit || 16 MHz || |
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− | | {{\| | + | | {{\|80386DX-20}} || 1988 || 32-bit || 20 MHz || |
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− | | {{\| | + | | {{\|80386DX-25}} || 1988 || 32-bit || 25 MHz || |
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− | + | | {{\|80386DX-33}} || 1988 || 32-bit || 33 MHz || | |
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− | | {{\| | + | | {{\|80386DX-16 IV}} || || 32-bit || 16 MHz || |
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− | | {{\| | + | | {{\|80386DX-20 IV}} || || 32-bit || 20 MHz || |
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− | | {{\| | + | | {{\|80386DX-25 IV}} || || 32-bit || 25 MHz || |
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− | | {{\|80386DX- | + | | {{\|80386DX-33 IV}} || || 32-bit || 33 MHz || |
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− | | {{\| | + | | {{\|80386SX-16}} || June 1988 || 16-bit || 16 MHz || |
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− | | {{\| | + | | {{\|80386SX-20}} || June 1988 || 16-bit || 20 MHz || |
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− | | {{\| | + | | {{\|80386SX-25}} || June 1988 || 16-bit || 25 MHz || |
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− | | {{\| | + | | {{\|80386SX-33}} || October 1992 || 16-bit || 33 MHz || |
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− | | {{\| | + | | {{\|80386SL-20}} || October 1992 || 16-bit || 33 MHz || |
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− | | {{\| | + | | {{\|80386SL-25}} || October 1992 || 16-bit || 33 MHz || |
|} | |} | ||
− | == | + | == Suppport Chips == |
{| class="wikitable" | {| class="wikitable" | ||
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== Clones == | == Clones == | ||
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− | == | + | == Architecture == |
− | + | {{empty section}} | |
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Facts about "80386 - Intel"
designer | Intel + |
first announced | June 1984 + |
first launched | October 1985 + |
full page name | intel/80386 + |
instance of | microprocessor family + |
instruction set architecture | IA-32 + |
main designer | Intel + |
manufacturer | Intel + |
microarchitecture | 80386 + |
name | Intel 80386 + |
package | PGA-132 + and PQFP-132 + |
process | 1,500 nm (1.5 μm, 0.0015 mm) + and 1,000 nm (1 μm, 0.001 mm) + |
technology | CMOS + |
word size | 32 bit (4 octets, 8 nibbles) + |