Video Signal Generator Owner's And Programmer's Manual

4-31
Hatch_10i, Hatch_10o, Hatch_12i, Hatch_12o,
Hatch_24i, Hatch_24o, Hatch_24s, Hatch_G,
Hatch_M, GRN_HTCH, and MAGENTA
Description The primary versions consist of a white, green (G
and GRN), or magenta (M) crosshatch drawn on a
black background. The lines form square boxes.
A single pixel dot is located in the center of each
crosshatch box. The number of boxes formed
depends on the version of the image selected and
the screen aspect ratio of the currently loaded
format. The number in the image’s name refers to
the number of boxes that are formed along the
minor axis for most aspect ratios. The firmware
calculates the ratio and then finds the closest match
from the table on the next page. Versions ending
in i draw from the inside (center) out. Any partial
boxes are placed around the perimeter of the image.
Versions ending in o draw from the outside in.
Any partial boxes are placed along the centerlines
of the image. Versions ending in s are the “i” version
plus a 1 pixel thick border.
The secondary versions invert the images to black
lines and dots on a white background. Hatch_G,
Hatch_M, GRN_HTCH and Magenta do not have
secondary versions.