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The Enhanced Graphics Adapter (EGA) is an IBM PC graphics adapter [2] [3] and de facto computer display standard from 1984 that superseded the CGA standard introduced with the original IBM PC, and was itself superseded by the VGA standard in 1987.
The Enhanced Graphics Adapter (EGA) supports all CGA modes and add three more: two 320×200 and 640×200 graphic modes, both with the full CGA 16-color palette (intended to be used with the same "digital RGB" CGA color monitor of 200 scan lines) and an extra 640×350 graphic mode with 16 colors chosen from a 6-bit RGB (64 colors) palette for ...
The CGA card was succeeded in the consumer space by IBM's Enhanced Graphics Adapter (EGA) card, which supports most of CGA's modes and adds an additional resolution (640 × 350) as well as a software-selectable palette of 16 colors out of 64 in both text and graphics modes.
Front and rear views of the TVM MD-3 cathode-ray tube monitor (Enhanced Graphics Adapter era). Note the DE-9 connector, cryptic mode switch, contrast and brightness controls at front, and the V-Size and V-Hold knobs at rear, which allow the control of the scaling and signal to CRT refresh rate synchronization respectively.
Genoa Systems Spectra EGA (Model 4800), ISA graphics card from 1985 Genoa Systems was founded in 1984 in San Jose, California, as a subsidiary of the Ching Fong Investment Company, a Taiwanese holding company headquartered in the United States in San Francisco.
It is in fact not a limitation of the graphics cards, but of the monitor, as the original EGA monitor, the IBM 5154 falls back to a CGA compatibility mode when CGA frequencies are present, as it does not detect whether the two extra pins used for the 64 EGA colors are driven by the card (as an EGA card would do) or grounded respectively ...
Early examples include the IBM EGA video adapter. [2] Several standards existed for feature connectors, depending on the bus and graphics card type. Most of them were simply an 8, 16 or 32-bit wide internal connector, transferring data between the graphics card and another device, bypassing the system's CPU and memory completely.
EGABTR (EGA for enhanced graphics adapter), [1] sometimes pronounced "Eggbeater", was a Trojan horse program [2] that achieved some level of notoriety in the late 1980s and early 1990s.