Quadram Quadcolor

From HandWiki
Short description: An early CGA-compatible graphics adapter with additional features
Quadram Quadcolor
Release date1983; 41 years ago (1983)
Cards
Entry-levelQuadram Quadcolor I
High-endQuadram Quadcolor II
History
PredecessorCGA
Simulated Quadram Quadcolor I 640 x 200 x 2 colors mode (corrected for aspect ratio)
Simulated Quadram Quadcolor II 320 x 200 x 136 colors mode (corrected for aspect ratio)
Simulated Quadram Quadcolor II 640 x 200 x 16 colors mode (corrected for aspect ratio)

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.

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, or 640×200 resolution with 16 colors.[2][5]

This card is supported by Dr. Hallo II and Turbo Pascal Graphix Toolbox.[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

References

  1. ↑ 1.0 1.1 1.2 "Quadcolor 1". http://arvutimuuseum.ee/th99/v/P-R/52513.htm. 
  2. ↑ 2.0 2.1 2.2 "QUADCOLOR 1". https://arvutimuuseum.ee/th99/v/P-R/52513.htm. 
  3. ↑ Longley, Dennis; Shain, Michael (1985-06-18) (in en). Expanding and Networking Microcomputers: Most Comprehensive Guide for Apple II and I. B. M.Personal Computers. Springer. pp. 28. ISBN 978-1-349-07625-3. https://books.google.pt/books?id=fpOvCwAAQBAJ&pg=PA28&lpg=PA28&dq=%22Quadram+Quadcolor%22+-wiki&source=bl&ots=5PwfbdD4kB&sig=ACfU3U363w5fLcJniUkhiyCV74jhjcYNKQ&hl=pt-PT&sa=X&ved=2ahUKEwjq_5TA2--DAxW7gf0HHYb2AKU4FBDoAXoECAQQAw#v=onepage&q=%22Quadram%20Quadcolor%22%20-wiki&f=false. 
  4. ↑ 4.0 4.1 4.2 Quadcolor I Operation Manual. Quadram Corporation. pp. 2. https://minuszerodegrees.net/manuals/Quadram/Quadram%20Quadcolor%20I%20-%20Operation%20Manual.pdf. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 Quadcolor II - Operation Manual. Quadram Corporation. pp. 1, 21, 22. https://minuszerodegrees.net/manuals/Quadram/Quadram%20Quadcolor%20II%20-%20Operation%20Manual.pdf. 
  6. ↑ 6.0 6.1 6.2 Maltais, Sylvain (2020). "Logiciel - Dr. HALO II - Carte vidéo supporté". https://www.gladir.com/SOFTWARE/DRHALOII/video-card-supported.htm. 
  7. ↑ 7.0 7.1 7.2 Turbo Pascal Graphix Toolbox. Borland International, Inc.. 1985. pp. 14. http://www.bitsavers.org/pdf/borland/turbo_pascal/Turbo_Pascal_Graphix_Toolbox_Version_1_1985.pdf. 
  8. ↑ "Manuals – Quadram". https://minuszerodegrees.net/manuals.htm#Quadram. 

External links



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