@begin: scope:[]  from
  [0] phi() [ ] ( )
  to:@1
@1: scope:[]  from @begin
  [1] phi() [ ] ( )
  [2] call main param-assignment [ ] ( )
  to:@end
@end: scope:[]  from @1
  [3] phi() [ ] ( )
main: scope:[main]  from @1
  [4] *((const byte*) main::screen#0) ← (byte/signed byte/word/signed word/dword/signed dword) 1 [ ] ( main:2 [ ] )
  [5] *((const byte*) BGCOL#0) ← (const byte) RED#0 [ ] ( main:2 [ ] )
  to:main::@return
main::@return: scope:[main]  from main
  [6] return  [ ] ( main:2 [ ] )
  to:@return
