Quadram Quadcolor Explained

Quadram Quadcolor
Manufacturer:	Quadram Corporation
Entry:	Quadram Quadcolor I
Highend:	Quadram Quadcolor II
Predecessor:	CGA

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]} and providing the same pixel resolutions.

Description

The Quadcolor has twice the memory of a standard CGA board (32k, compared to 16k),^[3] and offers a 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 — resolution with 136 colors, or resolution with 16 colors.^[5]

This card is supported by Dr. Hallo II and Turbo Pascal Graphix Toolbox.^{[6] [7]}

Models

• Quadram Quadcolor I
• Quadram Quadcolor II^[8]

Output capabilities

Quadram Quadcolor I offers the following modes:

• with 4 colors (standard CGA mode)
• with 2 colors (from a 4-bit RGBI hardware palette)

With the Quadcolor II enhancement board, Quadram Quadcolor offers the following modes:

• with 136 colors (obtained from a mix of two 16 color palettes)
• with 16 colors (4-bit RGBI hardware palette).

See also

• Tandy Graphics Adapter, a graphics hardware system with similar capabilities.
• Plantronics Colorplus
• Hercules InColor Card
• Orchid Graphics Adapter

External links

• Quadram Quadcolor I and II Drivers
• Quadram Quadcolor I – Operation Manual
• Quadram Quadcolor II – Operation Manual
• Quadram Quadjet manual

Notes and References

1. Web site: QUADCOLOR 1 . 2023-12-05 . arvutimuuseum.ee.
2. Book: Longley . Dennis . Expanding and Networking Microcomputers: Most Comprehensive Guide for Apple II and I. B. M.Personal Computers . Shain . Michael . 1985-06-18 . Springer . 978-1-349-07625-3 . 28 . en.
3. Web site: Quadcolor 1 . Total Hardware 1999 – Jumper settings for 18655 devices.
4. Book: Quadcolor I Operation Manual . Quadram Corporation . 2.
5. Book: Quadcolor II - Operation Manual . Quadram Corporation . 1, 21, 22.
6. Web site: Maltais . Sylvain . 2020 . Logiciel - Dr. HALO II - Carte vidéo supporté . 2023-12-05 . www.gladir.com.
7. Book: Turbo Pascal Graphix Toolbox . Borland International, Inc. . 1985 . 14.
8. Web site: Manuals – Quadram . 2023-09-04 . minus zerodegrees (−0º) IBM 51xx PC Family Computers.