Intel 80386
E637382
The Intel 80386 is a 32-bit x86 microprocessor that marked a major evolution in PC computing by introducing protected mode, virtual memory support, and hardware multitasking capabilities.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Intel 80386 microprocessor | 1 |
Statements (57)
| Predicate | Object |
|---|---|
| instanceOf |
CPU
ⓘ
microprocessor ⓘ x86 microprocessor ⓘ |
| addressBusWidth | 32-bit ⓘ |
| alsoKnownAs |
80386
NERFINISHED
ⓘ
Intel 386 NERFINISHED ⓘ i386 NERFINISHED ⓘ |
| announcementDate | 1985-10-17 ⓘ |
| architecture | x86 NERFINISHED ⓘ |
| backwardCompatibleWith |
Intel 80286
NERFINISHED
ⓘ
Intel 8086 NERFINISHED ⓘ Intel 8088 NERFINISHED ⓘ |
| bitWidth | 32-bit ⓘ |
| commercialAvailabilityYear | 1986 ⓘ |
| compatibleWith | x86 instruction set ⓘ |
| dataBusWidth | 32-bit ⓘ |
| designer | Intel NERFINISHED ⓘ |
| enabledOperatingSystem | Windows 3.x in 386 enhanced mode NERFINISHED ⓘ |
| enabledOperatingSystem |
early 32-bit Unix variants on PCs
ⓘ
early Linux kernels ⓘ |
| family | Intel 386 family NERFINISHED ⓘ |
| initialClockSpeed |
12 MHz
ⓘ
16 MHz ⓘ 20 MHz ⓘ |
| introductionYear | 1985 ⓘ |
| laterClockSpeed |
25 MHz
ⓘ
33 MHz ⓘ |
| manufacturer | Intel NERFINISHED ⓘ |
| market |
personal computers
ⓘ
servers ⓘ workstations ⓘ |
| maxAddressableMemory | 4 GB ⓘ |
| notableImpact |
enabled advanced memory protection on PCs
ⓘ
enabled preemptive multitasking on x86 platforms ⓘ introduced 32-bit computing to mainstream x86 PCs ⓘ |
| notableUse | IBM PC compatibles NERFINISHED ⓘ |
| packageType | PGA ⓘ |
| predecessor | Intel 80286 NERFINISHED ⓘ |
| processTechnology |
1 µm
ⓘ
1.5 µm ⓘ |
| successor | Intel 80486 NERFINISHED ⓘ |
| supportsFeature |
32-bit linear address space
ⓘ
32-bit registers ⓘ debug registers ⓘ hardware multitasking ⓘ new instructions for task management ⓘ on-chip memory management unit ⓘ paging ⓘ privilege levels ⓘ ring-based protection ⓘ segmentation ⓘ virtual memory ⓘ |
| supportsMode |
protected mode
ⓘ
real mode ⓘ virtual 8086 mode ⓘ |
| transistorCount | 275000 ⓘ |
| wordSize | 32-bit ⓘ |
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Intel 80386 microprocessor