color_bars.bmp (bmp 128 kB) Bars of red, gred, blue and gray, each transitioning smoothly from black to full color (or white). At 16bpp, you should see 32 for red and blue and 64 shades of green (see topic 600 for details). Useful for finding transposed wires in a display cable.
color_bar_test_pattern.bmp (bmp 528k) Includes vertical and horizontal color bars along with single-pixel lines. Esp. useful for finding errors in passive display cables (each wire is a different pixel).
color_bar_test_pattern_qvga.bmp Version of "color_bar_test_pattern.bmp" scaled to 320x240.
16-color gray.bmp Bar with 16 shades of gray progressing from black to white.
800x600x50pct_gray.bmp Alternating black and white dots. Causes maximimum power draw for most displays.