23 Apr
2001
23 Apr
'01
6:39 p.m.
Looking at the manual, it would appear that the PGC
would not be much use
for displaying bitmapped graphics. It's designed to display lines, arcs,
polygons, etc, described as such (i.e. draw a line from point 1 to point
2). It would appear to be a reasonable card (for the time) for CAD, or
graph plotting, or something like that.
It does support image display to some extent. It has an
image_write function (0xd9) that will write a bunch of pixels.
The function (only available in binary command mode) is of the format
{0xd9,y_start,x_start,x_end} followed by packets containing the pixel values.
It certainly wasn't fast, but it was faster than setting each pixel
individually. Wouldn't recommend trying to write a graphics intensive
game for it, though.
Eric