 | |
| Release date | 1982 |
|---|---|
| Manufactured by | Plantronics Enhanced Graphics Products |
| Designed by | Frederick Electronics |
| Architecture | Motorola MC6845 |
| Cards | |
| Entry-level | Plantronics Colorplus |
| High-end | ATI Graphics Solution, Paradise AutoSwitch EGA 480 |
| History | |
| Predecessor | CGA |
| Successor | EGA |
The Plantronics Colorplus is a graphics card for IBM PC computers, first sold in 1982. It implements a superset of the then-current CGA standard, using the same monitor standard (4-bit digital TTL RGBI monitor) and providing the same pixel resolutions.[1] It was produced by Frederick Electronics (of Frederick, Maryland), a subsidiary of Plantronics since 1968, and sold by Plantronics' Enhanced Graphics Products division.[2][3]
The Colorplus has twice the memory of a standard CGA board (32k, compared to 16k). The additional memory can be used in graphics modes to double the color depth, giving two additional graphics modes—16 colors at 320 × 200 resolution, or 4 colors at 640 × 200 resolution.[4]
It uses the same Motorola MC6845 display controller as the previous MDA and CGA adapters.[1]
The original card also includes a parallel printer port.
- ^ a b Machrone, Bill (July 1983). "Three Alternative Graphics Boards". PC Magazine. pp. 435–438.
- ^ Colorplus High Resolution Color Graphics Adapter from Plantronics. Frederick Electronics. 1984.
- ^ Staff writer (July 1, 1975). "Modern industries heart of area economy". The News. Frederick, Maryland: 4, 8 – via Newspapers.com.
- ^ Elliott, John (March 28, 2015). "Plantronics ColorPlus Notes". John Elliott's homepage. Retrieved 2023-04-17.
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