[GRASSLIST:5733] Displaying rasters on a two bit monitor

[H Bowman]

I've got grass running on through a monochrome NCD x-terminal (circa
1992). Everything I've tried so far works fine, except for displaying
rasters. They just come back as black, even if the color table is set to
all white.

d.mon start=x0 reports:
using default visual which is StaticGray
ncolors: 2
Graphics driver [x0] started


d.vect, d.sites, d.text, and d.barscale all work as expected, as long as
I choose a light color.

But d.rast and friends won't output in any color but black.

What does seem to work is:
d.erase color=white
d.rast -o roads

but it working in negatives gets confusing very quickly and doesn't work
all that well......

any ideas or experience?


thanks