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{{Merge|Video Display Generator}} | |||
{{Merge|Motorola 6847}} | |||
The '''VDG''' or '''MC6847''' is the video display generator from Motorola used in the [[TRS-80 Color Computer]] | The '''VDG''' or '''MC6847''' is the video display generator from Motorola used in the [[TRS-80 Color Computer]] | ||
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It can display a maximum of 9 colors: black, green, yellow, blue, red, buff (almost-but-not-quite white), cyan, magenta, and orange. | 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 | It is also used in the following computers of the time: [[MC-10]], [[Dragon]], [[Laser 200]] and [[Acorn Atom]]. | ||
{| class="wikitable" | {| class="wikitable" | ||
! Video Mode !! Resolution !! Colors !! Bytes | ! Video Mode !! Resolution !! Colors !! Bytes !! Shorthand !! PMODE !! SCREEN !! $FF22 value | ||
|- | |- | ||
|Alphanumeric Internal | |Alphanumeric Internal | ||
| Line 14: | Line 16: | ||
|8 + Black | |8 + Black | ||
|512 | |512 | ||
| | |||
|- | |- | ||
|Alphanumeric External | |Alphanumeric External | ||
| Line 19: | Line 22: | ||
|8 + Black | |8 + Black | ||
|512 | |512 | ||
| | |||
|- | |- | ||
|Semigraphics 4 | |Semigraphics 4 | ||
| Line 24: | Line 28: | ||
|8 + Black | |8 + Black | ||
|512 | |512 | ||
| | |||
|- | |- | ||
|Semigraphics 6 | |Semigraphics 6 | ||
| Line 29: | Line 34: | ||
|4 + Black | |4 + Black | ||
|512 | |512 | ||
| | |||
|- | |- | ||
|Color Graphics 1 | |Color Graphics 1 | ||
| Line 34: | Line 40: | ||
|4 | |4 | ||
|1024 | |1024 | ||
| | |||
|- | |- | ||
|Resolution Graphics 1 | |Resolution Graphics 1 | ||
| Line 39: | Line 46: | ||
|Black & White | |Black & White | ||
|1024 | |1024 | ||
| | |||
|- | |- | ||
|Color Graphics 2 | |Color Graphics 2 | ||
| Line 44: | Line 52: | ||
|4 | |4 | ||
|2048 | |2048 | ||
| | |||
|- | |- | ||
|Resolution Graphics 2 | |Resolution Graphics 2 | ||
| Line 49: | Line 58: | ||
|Black & White | |Black & White | ||
|1536 | |1536 | ||
| | |||
|- | |- | ||
|Color Graphics 3 | |Color Graphics 3 | ||
| Line 54: | Line 64: | ||
|4 | |4 | ||
|3072 | |3072 | ||
| | |||
|- | |- | ||
|Resolution Graphics 3 | |Resolution Graphics 3 | ||
| Line 59: | Line 70: | ||
|Black & White | |Black & White | ||
|3072 | |3072 | ||
| | |||
|- | |- | ||
|Color Graphics 6 | |Color Graphics 6 | ||
|128 × 192 | |128 × 192 | ||
|4 | |4 (GYBR) | ||
|6144 | |||
|6C0 | |||
|3 | |||
|1,0 | |||
|d0 | |||
|- | |||
|Color Graphics 6 | |||
|128 × 192 | |||
|4 (WCMO) | |||
|6144 | |||
| | |||
| | |||
| | |||
|e0 | |||
|- | |||
|Resolution Graphics 6 | |||
|256 × 192 | |||
|Green & White | |||
|6144 | |6144 | ||
| | |||
| | |||
| | |||
|f0 | |||
|- | |- | ||
|Resolution Graphics 6 | |Resolution Graphics 6 | ||
| Line 69: | Line 103: | ||
|Black & White | |Black & White | ||
|6144 | |6144 | ||
| | |||
| | |||
| | |||
|f8 | |||
|} | |} | ||
==See Also== | |||
*[[Video Display Generator]] | |||
*[[Motorola 6847]] | |||
[[Category:Hardware]] | |||
Latest revision as of 18:31, 6 February 2025
| Merge |
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| It has been suggested that this page be merged with Video Display Generator (Discuss) |
| Merge |
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| It has been suggested that this page be merged with Motorola 6847 (Discuss) |
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: MC-10, Dragon, Laser 200 and Acorn Atom.
| Video Mode | Resolution | Colors | Bytes | Shorthand | PMODE | SCREEN | $FF22 value |
|---|---|---|---|---|---|---|---|
| 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 (GYBR) | 6144 | 6C0 | 3 | 1,0 | d0 |
| Color Graphics 6 | 128 × 192 | 4 (WCMO) | 6144 | e0 | |||
| Resolution Graphics 6 | 256 × 192 | Green & White | 6144 | f0 | |||
| Resolution Graphics 6 | 256 × 192 | Black & White | 6144 | f8 |