Memory added plus basic memory operations

bin/example.wasm

@@ -1,3 +1,5 @@
+DECLARE MEMORY_SIZE $4096;
+
 addi $10 $-5 %A;
 subi %A $2 %B;
 muli $2 %B %C;
@@ -7,7 +9,7 @@ divi $2 %C %D;
 seti %A $0;
 
 # Loop from 0 to 10
-loop:
+count_loop:
 addi $1 %A %A;
 
 # Print the current value
@@ -18,7 +20,7 @@ int $0;
 seti %A %B;
 
 lti %A $10;
-jmp loop;
+jmp count_loop;
 
 # Hello world
 seti %A $72;  # H
@@ -31,5 +33,24 @@ int $0;
 seti %A $111; # o
 int $0;
 
+seti %A $32; # space
+int $0;
+
+pushi $68; # D
+pushi $76; # L
+pushi $82; # R
+pushi $79; # O 
+pushi $87; # W
+
+seti %B $5;
+
+world_loop:
+popi %A;
+int $0;
+
+subi %B $1 %B;
+gti %B $0;
+jmp world_loop;
+
 seti %A $10; # newline
 int $0;