Texas Instruments 3000 HGC (Hercules Graphics Card)

Screen Standards
The TravelMate 3000 LCD screen supports VGA by displaying text in an 80-column by
25-line text display with 16 shades of gray (selectable from 32 shades) in an 8-by- 16 pixel
character box in a 640-by-400 pixel display area centered on the screen.
The TravelMate 3000 supports color graphics by displaying colors as 32 shades of gray in
two modes:
Resolution: 320 by 200 pixels with 256 shades of gray mapped into 32 shades
One pixel is converted to a 2 x 2 cell
Display area: 640 x 400
Resolution 640 by 480 with 16 shades of 32 shades of gray
One pixel is a 1 x 1 cell
Display area: 640 x 480
HGC (Hercules Graphics Card)
The HGC standard supports a high-resolution 720-by-348 pixel monochrome text or
graphics display. The text display for HGC mode is the same as for MDA mode. The
TravelMate 3000 LCD screen does not support HGC graphics mode. To display HGC
graphics, connect a multifrequency monitor to the external monitor connector on the left
side panel of the computer.
Screen Standards H-3