SCO Xenix screen painter

[Emuleomo]

I wrote some code that does 

a) Lotus style menus, 
b) Pop-up menus,
c) Limited windows
d) Pull-down menus

and then I ported it to SCO Xenix 386.
Alas, whenever I run it on a VGA color monitor, THE SCREEN IS FILLED WITH SNOW!!
I am NOT using color, but it is based on terminfo (not curses)
How can I get round this problem.


I noticed that the Informix/SQL menu which also uses Lotus style menus, does
not have this problem!!
-- 
** Writing error-free code MUST be magic! Why else is it sooo difficult to do?