Plantronics Colorplus
| 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. It was produced by Frederick Electronics (of Frederick, Maryland), a subsidiary of Plantronics since 1968, and sold by Plantronics' Enhanced Graphics Products division.
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.
It uses the same Motorola MC6845 display controller as the previous MDA and CGA adapters.
The original card also includes a parallel printer port.