INDIRECT THREADED CODE --------------------------------------------------------------
In direct threaded code, QUADRUPLE would look like:
+------------------+
| addr of DOUBLE --------------------> (assembly code to do the double)
+------------------+ NEXT
%esi -> | addr of DOUBLE |
+------------------+
9
: DOUBLE DUP + ;
2 DOUBLE .
4 .s
3 .
3 .s
: QUADRUPLE DOUBLE DOUBLE ;
2 QUADRUPLE .
8
n
9