Quadram Quadcolor

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] and providing the same pixel resolutions.

Quadram Quadcolor
Release date1983 (1983)
Manufactured byQuadram Corporation
Designed byQuadram Corporation
Cards
Entry-levelQuadram Quadcolor I
History
PredecessorCGA
SuccessorEGA

Description

The Quadcolor has twice the memory of a standard CGA board (32k, compared to 16k).[1] The additional memory can be used in graphics modes to double the color depth, giving two additional graphics modes — 136 colors at 320 × 200 resolution, or 16 colors at 640 × 200 resolution.

Models

  • Quadram Quadcolor I
  • Quadram Quadcolor II[2]

Output capabilities

CGA compatible modes:

  • 320 × 200 in 4 colors from a 16 color hardware palette.

In addition to the CGA modes, it offers:

  • 320 × 200 with 136 colors
  • 640 × 200 with 16 colors

See also

References

  1. "Quadcolor 1". Total Hardware 1999 – Jumper settings for 18655 devices.
  2. "Manuals – Quadram". minus zerodegrees (−0º) IBM 51xx PC Family Computers. Retrieved 2023-09-04.
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