VL-Bus
E699613
VL-Bus is a now-obsolete local computer bus standard developed in the early 1990s to provide faster connections between a PC’s CPU and expansion cards, particularly for graphics.
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
computer bus standard
ⓘ
local bus ⓘ |
| abbreviation | VLB NERFINISHED ⓘ |
| architectureType | processor-local bus ⓘ |
| backwardCompatibility | ISA NERFINISHED ⓘ |
| busWidth | 32-bit ⓘ |
| category |
PC expansion bus
ⓘ
computer hardware standard ⓘ |
| clockSource | CPU bus clock ⓘ |
| coexistsWith | ISA bus NERFINISHED ⓘ |
| connectorType | edge connector ⓘ |
| designedFor | Intel 486 architecture NERFINISHED ⓘ |
| developer |
VESA
NERFINISHED
ⓘ
Video Electronics Standards Association NERFINISHED ⓘ |
| electricalInterface | derived from 486 CPU bus ⓘ |
| era | 1990s PC hardware ⓘ |
| fullName | VESA Local Bus NERFINISHED ⓘ |
| governedBy | VESA specification NERFINISHED ⓘ |
| intendedUse | provide faster connections between CPU and expansion cards ⓘ |
| introductionPeriod | early 1990s ⓘ |
| limitation |
poor scalability to newer processors
ⓘ
signal integrity issues at higher speeds ⓘ tight coupling to CPU clock ⓘ |
| market | IBM PC compatible computers ⓘ |
| maxSlotsPerSystem | 3 ⓘ |
| mechanicalDesign | extension of ISA slot with additional connector ⓘ |
| mountingLocation | motherboard expansion slot ⓘ |
| performanceAdvantageOver | ISA NERFINISHED ⓘ |
| primaryUse |
disk controllers
ⓘ
graphics adapters ⓘ |
| reasonForObsolescence | adoption of PCI as a processor-independent bus ⓘ |
| replacedBy | PCI NERFINISHED ⓘ |
| standardizationBody | Video Electronics Standards Association NERFINISHED ⓘ |
| status | obsolete ⓘ |
| supersededBy | Peripheral Component Interconnect NERFINISHED ⓘ |
| supports | bus mastering (in some implementations) ⓘ |
| targetPlatform | 486-based desktop PCs ⓘ |
| typicalClockFrequency | 33 MHz ⓘ |
| typicalUseCase | high-performance video cards for DOS and early Windows ⓘ |
| usedIn | 486 motherboards ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.