Texas Instruments TravelMate 2000 - Manual (Page 174)

Screen Standards
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 2000 LCD screen does not
support HGC graphics mode. To display HGC graphics, connect a multi-frequency monitor to the CRT
connector on the optional CRT adaptor.
Screen Standards J-5