🚀 go-pugleaf

      Has anyone tried Logitec's Modula II with HALO graphics on a PC?
The HALO literature claims that it will work.  Does it?

      I would like to map a rectangular array of values into a range
of shades of a color, so that I can display map data (obtained from
a ranging sonar) as a range of colors from red to green.  Can this be
done using HALO under Modula II on a PGA or EGA type display?

      Some questions on Logitec Modula II:

      1.  Are subranges assigned space appropriately?  In particular,
	  does 0..255 occupy only one byte?  

      2.  How well does concurrency work, if at all?  Is it possible
	  to concurrently operate async ports while updating the
	  screen?


					John Nagle