https://github.com/hkzlab/cga_schematics

IBM Colour Graphics Adapter schematics redrawn in KiCad
https://github.com/hkzlab/cga_schematics

cga ibm isa retrocomputing schematics

Last synced: 3 days ago
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IBM Colour Graphics Adapter schematics redrawn in KiCad

• Host: GitHub
• URL: https://github.com/hkzlab/cga_schematics
• Owner: hkzlab
• Created: 2021-03-14T12:08:18.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2023-10-13T16:23:59.000Z (over 1 year ago)
• Last Synced: 2023-10-15T06:31:51.529Z (over 1 year ago)
• Topics: cga, ibm, isa, retrocomputing, schematics
• Homepage:
• Size: 4.61 MB
• Stars: 13
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# IBM Colour Graphics Adapter (CGA) Schematics

This is a redrawing in KiCad of the original IBM CGA card schematics.

I intend to use these to help me repair original boards and build a clone.

![IBM CGA](pics/CGA_board.png)

Original picture under CC BY-SA 4.0, found [here](https://en.wikipedia.org/wiki/Color_Graphics_Adapter#/media/File:IBM_Color_Graphics_Adapter.jpg)

## WARNING

**Help in double checking** and finding issues is appreciated: you can find the original manual [here](docs/Color_Graphics_Adapter_-_Manual.pdf), 

see pages 32-37.

I used this schematic with kicad to build a clone (CGA Redux), which apparently works fine.