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Video Display Generator: Difference between revisions
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===VDG=== | |||
[[Image:Coco2boot.png|thumb|320px|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==== | |||
The | [[Image:Cocobvdg.png|thumb|320px|Sample character set display of 6847 VDG]] | ||
The CoCo is physically wired such that its default alphanumeric display is actually "Semigraphics 4" mode. | |||
Revision as of 09:54, 12 February 2015
VDG
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
The CoCo is physically wired such that its default alphanumeric display is actually "Semigraphics 4" mode.