MediaWiki:Sitenotice
2026-03-12: Cocopedia.com is now using a new caching system that should make things faster. Please let me know if you encounter any new issues.

2026-03-15: MediaWiki has been reinstalled and the old database and files restored. It was pretty clogged up from being upgraded so many times since 2004. I am also testing out Cloudflare to see if it can prevent the 'bot assaults that took the site down last year.

2026-03-16: Special thanks to Don Barber for hosting a backup mirror of CoCopedia: https://cocopedia.dgb3.net

Video Display Generator

From CoCopedia - The Tandy/Radio Shack Color Computer Wiki
Revision as of 05:54, 12 February 2015 by Luis46coco (talk | contribs)
Jump to navigationJump to search

VDG

Power-on screen of a CoCo 2

The MC6847 is display generator capable of displaying text and graphics contained within a roughly square display matrix 256 pixels wide by 192 lines high. It can display 9 colors: black, green, yellow, blue, red, buff (almost-but-not-quite white), cyan, magenta, and orange.

Alphanumeric/Semigraphics display

Sample character set display of 6847 VDG

The CoCo is physically wired such that its default alphanumeric display is actually "Semigraphics 4" mode.

Retrieved from "https://www.cocopedia.com/wiki/index.php?title=Video_Display_Generator&oldid=7159"