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XGA, the eXtended Graphics Array, is an IBM display standard introduced in 1990. Today, it is the most common appellation of the 1024 × 768 pixels display resolution, but the official definition is broader than that. It was not a new and improved replacement for Super VGA, but rather became one particular subset of the broad range of capabilities covered under the "Super VGA" umbrella. International Business Machines Corporation (IBM, or colloquially, Big Blue) (NYSE: IBM) (incorporated June 15, 1911, in operation since 1888) is headquartered in Armonk, New York, USA. The company manufactures and sells computer hardware, software, and services. ...
1990 (MCMXC) was a common year starting on Monday of the Gregorian calendar. ...
This example shows an image with a portion greatly enlarged, in which the individual pixels are rendered as little squares and can easily be seen. ...
It has been suggested that this article or section be merged with List of common resolutions. ...
Super Video Graphics Array, almost always abbreviated to Super VGA or just SVGA is a broad term that covers a wide range of computer display standards. ...
The initial version of XGA expanded upon IBM's VGA, adding support for two resolutions: VGA redirects here. ...
- 800 × 600 pixels with high colour (16 bits per pixel, i.e. 65,536 colors).
- 1024 × 768 pixels with a palette of 256 colours (8 bits per pixel)
Like its predecessor (the IBM 8514), XGA offered fixed function hardware acceleration to offload processing of 2D drawing tasks. XGA and 8514 could offload line-draw, bitmap-copy (bitblt), and color-fill operations from the host CPU. XGA's acceleration was faster than 8514's, and more comprehensive in that it supported more drawing primitives and XGA's 16 bits per pixel (65,536 color) display-mode. A palette, in computer graphics, is a designated subset of the total range of colors supported by a computer graphics system. ...
The 8514 is an IBM graphics computer display standard supporting a display resolution of 1024×768 pixels with 256 colours at 43. ...
Bit blit (bitblt, blitting etc. ...
Die of an Intel 80486DX2 microprocessor (actual size: 12×6. ...
XGA-2 added true-color mode for 640×480, 1024×768 support for high colour and higher refresh rates, and improved accelerator performance. All XGA modes have a 4:3 aspect ratio rounded to 8 pixels. The refresh rate (or vertical refresh rate, vertical scan rate for CRTs) is the number of times in a second that a display is illuminated. ...
4:3 is a ratio. ...
The aspect ratio of an image is its displayed width divided by its height (usually expressed as x:y). For instance, the aspect ratio of a traditional television screen is 4:3, or 1. ...
XGA should not be confused with VESA's EVGA (Extended Video Graphics Array) that was released at a similar time. The Video Electronics Standards Association (VESA) is an international body, founded in the late 1980s by NEC Home Electronics and eight other video display adapter manufacturers. ...
Extended Video Graphics Array (or EVGA) is a standard created by the Video Electronics Standards Association in 1991 denoting a non-interlaced resolution of 1024x768 at a maximum of 70Hz refresh rate. ...
Clone hardware XGA hardware was not cloned as extensively as VGA hardware. Nevertheless, at least one graphics company made several XGA-compatible chips, the IIT AGX.
Reference This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL. The Free On-line Dictionary of Computing (FOLDOC) is an online, searchable encyclopedic dictionary of computing subjects. ...
GNU logo (similar in appearance to a gnu) The GNU Free Documentation License (GNU FDL or simply GFDL) is a copyleft license for free content, designed by the Free Software Foundation (FSF) for the GNU project. ...
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