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VESA ( Video Electronics Standards Association ) Local Bus worked alongside the ISA bus ; it acted as a high-speed conduit for memory-mapped I / O and DMA, while the ISA bus handled interrupts and port-mapped I / O.
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VESA and Video
M1-DA connectors are sometimes labeled as DVI-M1 ; they are used for the VESA Enhanced Video Connector and VESA Plug and Display schemes.
Coordinated Video Timings-Reduced Blanking ( CVT-RB ) is a VESA standard which offers reduced horizontal and vertical blanking for non-CRT based displays.
VESA (; Video Electronics Standards Association ) is an international standards body for computer graphics formed in 1988 by NEC Home Electronics, maker of the MultiSync monitor line, and eight video display adapter manufacturers: ATI Technologies, Genoa Systems, Orchid Technology, Renaissance GRX, STB Systems, Tecmar, Video 7 and Western Digital / Paradise Systems.
* VESA Enhanced Video Connector, an obsolete standard for reducing the number of cables around computers.
The closest to an " official " definition was in the VBE extensions defined by the Video Electronics Standards Association ( VESA ), an open consortium set up to promote interoperability and define standards.
The Modeline is based on the Generalized Timing Formula or the Coordinated Video Timings standards produced by VESA.
Enhanced Graphics Adapter ( EGA ) and better adapters natively support text modes beyond 80 × 25 character cells: 80 × 43 ( EGA ), 80 × 50 ( Video Graphics Array, VGA ), 132 × 50 and 132 × 60 ( VESA compatible Super VGA ), etc., increasing the simulated graphic resolution available, doubled again through the half block characters.
* Recommended-Pentium 90 MHz or better, 16 Mb RAM, VESA Local Bus ( VLC ) or PCI video card with fast DOS access & 1Mb of video memory, VESA 2. 0 Compliant Video card ( or software driver ), 4X speed CD-ROM and speed compensating joystick
DisplayPort is a digital display interface developed by the Video Electronics Standards Association ( VESA ).
VESA and Standards
According to Kendall Bennett, developer of the VBE / AF standard, the VESA Software Standards Committee was closed down due to a lack of interest resulting from charging high prices for specifications.
PCI video cards and other cards that contain a BIOS are problematic, although video cards conforming to VESA Standards may be used for secondary monitors.
VESA and Local
By the time there was a strong market need for a bus of these speeds and capabilities, the VESA Local Bus and later PCI filled this niche and EISA vanished into obscurity.
For general desktop computer use it has been supplanted by later buses such as IBM Micro Channel, VESA Local Bus, Peripheral Component Interconnect and other successors.
The PCI Local Bus was first implemented in IBM PC compatibles, where it displaced the combination of ISA plus one VESA Local Bus as the bus configuration.
The VESA Local Bus was designed as a stopgap solution to the problem of the ISA bus's limited bandwidth.
When the Pentium processor arrived there were major differences in its bus design, and was not easily adaptable to a VESA Local Bus implementation.
Most PCs that used VESA Local Bus had only one or two VLB capable ISA slots from the 5 or 6 available ( thus 4 ISA slots generally were just that, ISA only ).
Despite these problems, the VESA Local Bus became very commonplace on later 486 motherboards, with a majority of later ( post 1993 ) 486-based systems featuring a VESA Local Bus video card.
PCI also displaced the VESA Local Bus in the remaining 486 market, with some of the last 80486 motherboards featuring PCI slots instead of VLB slots.
Compaq ) and then the VESA Local Bus Standard, were late 1980s expansion buses that were tied but not exclusive to the 80386 and 80486 CPU bus.
The PC clone market did not want to pay royalties to IBM in order to use this new technology, and for desktop machines vendors of PC-compatibles stayed largely with the 16-bit AT bus, ( embraced and renamed as ISA to avoid IBM's " AT " trademark ) and manual configuration, although the VESA Local Bus was briefly popular for Intel ' 486 machines.
VESA and worked
These kits only worked with CRT computer displays and employed either VGA pass-through, VESA Stereo or proprietary interface for left – right synchronization.
The most prominent example was the ELSA Revelator glasses, which worked exclusively in Nvidia cards through a proprietary interface based on VESA Stereo.
The utility worked with all MCGA games, but was completely incompatible with games using " Mode X " VGA display mode, which could not be emulated using the VESA mode.
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