MediaWiki:Sitenotice:
2024-03-02: The wiki ran out of disk space, so things were not working. This has been resolved by adding another 5GB of quota ;-) Thanks to Tim Lindner for reporting the issues. 2020-05-17: If a page gives you an error about some revision not being found, just EDIT the page and the old page should appear in the editor. If it does, just SAVE that and the page should be restored. OS-9 Al (talk) 12:22, 17 May 2020 (CDT)

VDG: Difference between revisions

From CoCopedia - The Tandy/Radio Shack Color Computer Wiki
Jump to navigation Jump to search
No edit summary
No edit summary
Line 8: Line 8:


{| class="wikitable"
{| class="wikitable"
! Video Mode !! Resolution !! Colours !! Bytes
! Video Mode !! Resolution !! Colors !! Bytes
|-  
|-  
|Alphanumeric Internal
|Alphanumeric Internal
|32 × 16
|32 × 16
|1 + Black
|8 + Black
|512
|512
|-  
|-  
|Alphanumeric External
|Alphanumeric External
|32 × 16
|32 × 16
|1 + Black
|8 + Black
|512
|512
|-
|-
Line 37: Line 37:
|Resolution Graphics 1
|Resolution Graphics 1
|128 × 64
|128 × 64
|1 + Black
|Black & White
|1024
|1024
|-
|-
Line 47: Line 47:
|Resolution Graphics 2
|Resolution Graphics 2
|128 × 96
|128 × 96
|1 + Black
|Black & White
|1536
|1536
|-
|-
Line 57: Line 57:
|Resolution Graphics 3
|Resolution Graphics 3
|128 × 192
|128 × 192
|1 + Black
|Black & White
|3072
|3072
|-
|-
Line 67: Line 67:
|Resolution Graphics 6
|Resolution Graphics 6
|256 × 192
|256 × 192
|1 + Black
|Black & White
|6144
|6144
|}
|}

Revision as of 11:31, 14 May 2013

The VDG or MC6847 is the video display generator from Motorola used in the TRS-80 Color Computer

It can display text and graphics within a matrix of 256 pixels wide by 192 lines high.

It can display a maximum of 9 colors: black, green, yellow, blue, red, buff (almost-but-not-quite white), cyan, magenta, and orange.

It is also used in the following computers of the time: Dragon 32/64, Laser 200 and Acorn Atom.

Video Mode Resolution Colors Bytes
Alphanumeric Internal 32 × 16 8 + Black 512
Alphanumeric External 32 × 16 8 + Black 512
Semigraphics 4 64 × 32 8 + Black 512
Semigraphics 6 64 × 48 4 + Black 512
Color Graphics 1 64 × 64 4 1024
Resolution Graphics 1 128 × 64 Black & White 1024
Color Graphics 2 128 × 64 4 2048
Resolution Graphics 2 128 × 96 Black & White 1536
Color Graphics 3 128 × 96 4 3072
Resolution Graphics 3 128 × 192 Black & White 3072
Color Graphics 6 128 × 192 4 6144
Resolution Graphics 6 256 × 192 Black & White 6144