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The latter method is considerably faster, and allows quick reading of the text buffer, for which reason it is preferred for advanced TUI programs. 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 ...
Under Windows 9x, the screen buffer mirrors the structure of VGA text buffer, with two bytes per character cell: one byte for character code, one byte for attributes (the character must be in OEM character set, the attribute is with high-intensity background/no blinking). This speeds up operation considerably if the actual VGA text mode is used.
Text mode is a computer display mode in which content is internally represented on a computer screen in terms of characters rather than individual pixels.Typically, the screen consists of a uniform rectangular grid of character cells, each of which contains one of the characters of a character set; at the same time, contrasted to graphics mode or other kinds of computer graphics modes.
a text buffer is a region in memory where text is temporarily stored while it is being worked on by the CPU. The CPU can write and read to and from a text buffer, essentially manipulating text. The CPU might be moving it from one location to another to fulfil a request by a user. see Data buffer; a part of video adapter's memory in a text mode;
Text modes use 16 KB divided into 4 or 8 pages, for 80×25 or 40×25 text formats respectively; any part of the 16 KB not used for text display pages can be used as general RAM. In graphical modes, the base 128 KB of RAM is divided into eight 16 KB banks. [25] The PCjr can use any bank for video generation, in a video mode that uses 16 KB.
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A Chinese hack compromised even more U.S. telecoms than previously known, including Charter Communications, Consolidated Communications and Windstream, the Wall Street Journal reported late on ...
The Hercules Graphics Card (HGC) is a computer graphics controller formerly made by Hercules Computer Technology, Inc. that combines IBM's text-only MDA display standard with a bitmapped graphics mode, also offering a parallel printer port. [1] [2] This allows the HGC to offer both high-quality text and graphics from a single card.