Texas Instruments TravelMate 2000 - Manual (Page 172)

Screen Standards
Color graphics are supported in three resolutions, each with standard and expanded modes:
Resolution: 320 by 200 in 16 shades of gray
Standard
One pixel is converted to a 2 x 2 cell
Display area: 640 x 400
Expanded
Every fifth line is displayed twice
One pixel is converted to a 2 x 2 or 2 x 4 cell (every fifth line)
Display area: 640 x 480
Resolution: 640 by 200 in 16 shades of gray
Standard
One pixel is converted to a 1 x 2 cell
Display area: 640 x 400
Expanded
Every fifth line is displayed twice
One pixel is converted to a 1 x 2 or 1 x 4 cell (every fifth fine)
Display area: 640 x 480
Resolution: 640 by 350 pixels with 16 shades of gray or monochrome
Standard
One pixel is displayed as a 1 x 1 cell
Display area: 640 x 350
Expanded
Every third line is displayed twice
Display area: 640 x 466
Screen Standards J-3