Color Graphics Adaptor
| Release date | 1981 |
|---|---|
| Architecture | Motorola MC6845, ATI CW16800 |
| Cards | |
| Entry-level | IBM Color Graphics Adapter, ATi Graphics Solution Rev 3, ATi Color Emulation Card, Tseng Labs ColorPAK, |
| Mid-range | ATi Graphics Solution plus, ATi Graphics Solution Plus SP, ATi Graphics Solution SR, Number Nine Graphics System |
| High-end | ATi Small Wonder Graphics Solution, Tseng Labs EVA/480 |
| Enthusiast | ATi Small Wonder Graphics Solution with game port |
| History | |
| Successor |
Plantronics Colorplus |
Plantronics Colorplus
PCjr/Tandy Graphics Adapter
Enhanced Graphics Adapter
Multi-Color Graphics Array
The Color Graphics Adapter (CGA), originally also called the Color/Graphics Adapter or IBM Color/Graphics Monitor Adapter, introduced in 1981, was IBM's first graphics card and first color display card for the IBM PC. For this reason, it also became that computer's first color computer display standard.
The standard IBM CGA graphics card was equipped with 16 kilobytes of video memory and could be connected either to a dedicated direct-drive CRT monitor using a 4-bit digital (TTL) RGBI interface, such as the IBM 5153 color display, or to an NTSC-compatible television or composite video monitor via an RCA connector. The RCA connector provided only baseband video, so to connect the CGA card to a standard television set required a separate RF modulator unless the TV had an RCA jack though with the former combined with an amplifier sometimes was more practical since one could then hook up an antenna to the amplifier and get wireless video.
Built around the Motorola MC6845 display controller, the CGA card featured several graphics and text modes. The highest display resolution of any mode was 640×200, and the highest color depth supported was 4-bit (16 colors).
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