VDG

Merge
It has been suggested that this page be merged with Video Display Generator (Discuss)

Merge
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: Dragon 32/64, 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

See Also