This shot features a mixed mode display of 40 character hardware text mode (1 line), 80 character software text mode (1 line), and 16-color hires (yes, it can get lower than this) graphics mode (rest of screen).
This shot shows the 256-color hires mode and 16-color lowres mode (bottom of screen). (For the web this gif image was made to use only 32 colors, dithering was applied to simulate the ones missing).
This shot demonstrates the attribute graphics mode, in combination with different colormaps for every line-parameter-block (= 9 scanlines). Also note that the hardware text font has been (partly) changed.
"It's Nick Dave, but not as we know him"