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VGA section on the motherboard in IBM PS/55. The color palette random access memory (RAM) and its corresponding digital-to-analog converter (DAC) were integrated into one chip (the RAMDAC) and the cathode-ray tube controller was integrated into a main VGA chip, which eliminated several other chips in previous graphics adapters, so VGA only additionally required external video RAM and timing ...
The Video Graphics Array (VGA) connector is a standard connector used for computer video output. Originating with the 1987 IBM PS/2 and its VGA graphics system, the 15-pin connector went on to become ubiquitous on PCs, [ 1 ] as well as many monitors, projectors and HD television sets.
The VGA text buffer is located at physical memory address 0xB8000. [14] Since this address is usually used by 16-bit x86 processes operating in real-mode, it is also the first half of memory segment 0xB800. The text buffer data can be read and written, and bitwise operations can be applied. A part of text buffer memory above the scope of the ...
An analog standard once used by Sun Microsystems, SGI and IBM. DMS-59: A connector that provides a DVI or VGA output on a single connector. DE-9: The historical connector used by EGA and CGA graphics cards is a female nine-pin D-subminiature . The signal standard and pinout are backward-compatible with CGA, allowing EGA monitors to be used on ...
They used NTSC or PAL-compliant televisions and monochrome, composite video or RGB-component monitors. The interlaced (i or I) mode produced visible flickering of finer details, eventually fixable by use of scan doubler devices and VGA monitors. 720×480i/576i maximum. Typically 640×400i/512i or 640×200/256 NI, and 320×200/256 NI for games ...
It defines a new license-free, royalty-free, digital audio/video interconnect, intended to be used primarily between a computer and its display monitor, or a computer and a home-theater system. The video signal is not compatible with DVI or HDMI, but a DisplayPort connector can pass these signals through.
A 15-pin VGA connector for a personal computer A 21-pin SCART or JP21 connector for a television. The various RGB (red, green, blue) analog component video standards (e.g., RGBS, RGBHV, RGsB) use no compression and impose no real limit on color depth or resolution, but require large bandwidth to carry the signal and contain a lot of redundant data since each channel typically includes much of ...
Much the way the system BIOS provides a set of functions that are used by software programs to access the system hardware, the video BIOS provides a set of video-related functions that are used by programs to access the video hardware as well as storing vendor-specific settings such as card name, clock frequencies, VRAM types & voltages.