Quadram Quadcolor
Early CGA-compatible graphics adapter
From Wikipedia, the free encyclopedia
The Quadram Quadcolor is a graphics card for IBM PC computers by Quadram Corporation, first sold in 1983. It is a superset of the then-current CGA standard, using the same monitor standard (4-bit digital TTL RGBI monitor or NTSC composite video)[1][2][3] and providing the same pixel resolutions.
| Release date | 1983 |
|---|---|
| Manufactured by | Quadram Corporation |
| Cards | |
| Entry-level | Quadram Quadcolor I |
| High-end | Quadram Quadcolor II |
| History | |
| Predecessor | CGA |
Description
The Quadcolor has twice the memory of a standard CGA board (32k, compared to 16k),[1][2] and offers a 640 × 200 mode with two freely definable colours.[4] If used with the Quadcolor II enhancement board, the additional memory can be used in graphics modes to double the color depth, allowing for two additional graphics modes — 320 × 200 resolution with 136 colors[dubious – discuss], or 640 × 200 resolution with 16 colors.[2][5]
This card is supported by Dr. Halo II and Turbo Pascal Graphix Toolbox.[dubious – discuss][6][7]
Models
Output capabilities
Quadram Quadcolor I offers the following modes:[4]
- 320 × 200 with 4 colors (standard CGA mode)
- 640 × 200 with 2 colors (from a 4-bit RGBI hardware palette)
With the Quadcolor II enhancement board, Quadram Quadcolor offers the following modes: [5]
- 320 × 200 with 136 colors (obtained from a mix of two 16 color palettes)[5]
- 640 × 200 with 16 colors (4-bit RGBI hardware palette).[1][5]
See also
- Tandy Graphics Adapter, a graphics hardware system with similar capabilities.
- Plantronics Colorplus
- Hercules InColor Card
- Orchid Graphics Adapter
