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Running hwinfo --framebuffer reports graphics information, including VESA modes on a "Mode" line. mdt is a Linux or DOS tool that uses VESA BIOS functions to read monitor data. [11] The Linux Real Mode Interface (LRMI) has a vbetest program that prints out VESA info. SciTech Software had a unrelated vbetest for DOS that dates back to 1994.
The software started out as The Universal VESA TSR (UNIVESA), written by Kendall Bennett. It was renamed to Universal VESA BIOS Extensions (UniVBE) in version 4.2 at the request of VESA organisation, and is no longer freeware. In version 5.1, VBE/Core 2.0 support was added. In version 5.2, it was renamed to Scitech Display Doctor.
VESA Advanced Feature Connector (VAFC), newer version of the VFC that widens the bus to either a 16-bit or 32-bit bus; VESA Local Bus (VLB), once used as a fast video bus (akin to the more recent Accelerated Graphics Port (AGP)) VESA BIOS Extensions (VBE), used for enabling standard support for advanced video modes
Video BIOS is the BIOS of a graphics card in a (usually IBM PC-derived) computer. It initializes the graphics card at the computer's boot time. It also implements INT 10h interrupt and VESA BIOS Extensions (VBE) [ 1 ] [ 2 ] for basic text and videomode output before a specific video driver is loaded.
Furthermore, on a modern x86 system, BIOS calls can only be performed in Real mode, or Virtual 8086 mode. v8086 is not an option in Long mode. This means that a modern operating system, which operates in Protected mode (32 bit), or Long mode (64 bit), would need to switch into real mode and back to call the BIOS - a hugely expensive operation.
Device Dependent X (DDX), another 2D graphics device driver for X.Org Server; The DRM is kernel-specific. A VESA driver is generally available for any operating system. The VESA driver supports most graphics cards without acceleration and at display resolutions limited to a set programmed in the Video BIOS by the manufacturer. [15]
The VESA Local Bus (usually abbreviated to VL-Bus or VLB) is a short-lived expansion bus introduced during the i486 generation of x86 IBM-compatible personal computers.Created by VESA (Video Electronics Standards Association), the VESA Local Bus worked alongside the then-dominant ISA bus to provide a standardized high-speed conduit intended primarily to accelerate video (graphics) operations.
Mode setting is a software operation that activates a display mode (screen resolution, color depth, and refresh rate) for a computer's display controller by using VESA BIOS Extensions or UEFI Graphics extensions (on more modern computers). The display mode is set by the kernel.