
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@2
  [1] main::i#4 = phi( main/0, main::@2/main::i#1 )
  [2] if(0!=MSG[main::i#4]) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@1 main::@4
  [3] main::i#6 = phi( main::@1/0, main::@4/main::i#3 )
  [4] if(BASIC[main::i#6]!='0') goto main::@4
  to:main::@return
main::@return: scope:[main]  from main::@3
  [5] return 
  to:@return
main::@4: scope:[main]  from main::@3
  [6] main::$2 = BASIC[main::i#6] & $3f
  [7] (SCREEN+$28)[main::i#6] = main::$2
  [8] main::i#3 = ++ main::i#6
  to:main::@3
main::@2: scope:[main]  from main::@1
  [9] SCREEN[main::i#4] = MSG[main::i#4]
  [10] main::i#1 = ++ main::i#4
  to:main::@1
