diff --git a/include/aefa_opcodes.hrl b/include/aefa_opcodes.hrl
index abc189e..a401c9f 100644
--- a/include/aefa_opcodes.hrl
+++ b/include/aefa_opcodes.hrl
@@ -100,6 +100,7 @@
 -define('SHA3'           , 16#65).
 -define('SHA256'         , 16#66).
 -define('BLAKE2B'        , 16#67).
+-define('RETURNR'        , 16#68).
 
 -define('FUNCTION'       , 16#fe).
 -define('EXTEND'         , 16#ff).
diff --git a/src/aefa_asm.erl b/src/aefa_asm.erl
index 0d6f1e9..0553af1 100644
--- a/src/aefa_asm.erl
+++ b/src/aefa_asm.erl
@@ -419,7 +419,7 @@ to_list_of_types(Tokens) ->
     case to_type(Tokens) of
         {Type, [{',', _} |  Rest]} ->
             {MoreTypes, Rest2} = to_list_of_types(Rest),
-            {[Type|MoreTypes], Rest2}
+            {[Type|MoreTypes], Rest2};
         {Type, [{']', _} |  Rest]} ->
             {[Type], Rest}
     end.
diff --git a/src/aefa_asm_scan.xrl b/src/aefa_asm_scan.xrl
index 84168e5..2a6ea2a 100644
--- a/src/aefa_asm_scan.xrl
+++ b/src/aefa_asm_scan.xrl
@@ -26,6 +26,7 @@ a              : {token, {stack, TokenLine, 0}}.
 a{INT}         : {token, {stack, TokenLine, parse_acc(TokenChars)}}.
 
 RETURN         : {token, {mnemonic, TokenLine, 'RETURN'}}.
+RETURNR        : {token, {mnemonic, TokenLine, 'RETURNR'}}.
 CALL           : {token, {mnemonic, TokenLine, 'CALL'}}.
 FUNCTION       : {token, {function, TokenLine, 'FUNCTION' }}.
 NOP            : {token, {mnemonic, TokenLine, 'NOP'}}.
diff --git a/src/aefa_opcodes.erl b/src/aefa_opcodes.erl
index 89e44d4..0d4cc56 100644
--- a/src/aefa_opcodes.erl
+++ b/src/aefa_opcodes.erl
@@ -26,6 +26,7 @@ opcode({comment,X}) -> ?COMMENT(X).
 
 mnemonic(?NOP)         -> 'NOP'        ;
 mnemonic(?RETURN)      -> 'RETURN'     ;
+mnemonic(?RETURNR)     -> 'RETURNR'    ;
 mnemonic(?PUSH)        -> 'PUSH'       ;
 mnemonic(?JUMP)        -> 'JUMP'       ;
 mnemonic(?JUMPIF)      -> 'JUMPIF'     ;
@@ -49,11 +50,13 @@ mnemonic(?EGT)         -> 'EGT'        ;
 mnemonic(?ELT)         -> 'ELT'        ;
 mnemonic(?EQ)          -> 'EQ'         ;
 mnemonic(?NEQ)         -> 'NEQ'        ;
+mnemonic(?STORE)       -> 'STORE'      ;
 mnemonic(OP)           -> {OP, nothandled}.
 
 m_to_op('NOP')         -> ?NOP         ;
 m_to_op('COMMENT')     -> ?COMMENT("") ;
 m_to_op('RETURN')      -> ?RETURN      ;
+m_to_op('RETURNR')     -> ?RETURNR     ;
 m_to_op('PUSH')        -> ?PUSH        ;
 m_to_op('JUMP')        -> ?JUMP        ;
 m_to_op('JUMPIF')      -> ?JUMPIF      ;
@@ -73,6 +76,7 @@ m_to_op('ELT')         -> ?ELT         ;
 m_to_op('EGT')         -> ?EGT         ;
 m_to_op('EQ')          -> ?EQ          ;
 m_to_op('NEQ')         -> ?NEQ         ;
+m_to_op('STORE')       -> ?STORE       ;
 m_to_op('CALL')        -> ?CALL        ;
 m_to_op('CALL_T')      -> ?CALL_T      ;
 m_to_op('CALL_R')      -> ?CALL_R      ;
@@ -82,6 +86,7 @@ args(?NOP)     -> 0;
 args(?RETURN)  -> 0;
 args(?INC)     -> 0;
 
+args(?RETURNR) -> 1;
 args(?PUSH)    -> 1;
 args(?JUMP)    -> 1;
 args(?CALL)    -> 1;
@@ -91,6 +96,7 @@ args(?JUMPIF)  -> 2;
 args(?CALL_R)  -> 2;
 args(?CALL_TR) -> 2;
 args(?NOT)     -> 2;
+args(?STORE)   -> 2;
 
 args(?ADD)     -> 3;
 args(?SUB)     -> 3;
@@ -109,6 +115,7 @@ args(?NEQ)     -> 3;
 args(_) -> 0. %% TODO do not allow this
 
 end_bb(?RETURN) -> true;
+end_bb(?RETURNR)-> true;
 end_bb(?JUMP)   -> true;
 end_bb(?JUMPIF) -> true;
 end_bb(?CALL)   -> true;
diff --git a/test/asm_code/memory.fate b/test/asm_code/memory.fate
new file mode 100644
index 0000000..e162daa
--- /dev/null
+++ b/test/asm_code/memory.fate
@@ -0,0 +1,31 @@
+;; CONTRACT memory
+FUNCTION call(integer):integer
+  STORE var1 arg0
+  PUSH  0
+  CALL  write
+  PUSH  var1
+  RETURN
+
+FUNCTION write(integer):integer
+  STORE    var1 arg0
+  RETURNR  var1
+
+FUNCTION dest_add(integer, integer): integer
+  STORE var1 arg0
+  STORE var2 arg1
+  ADD   var3 var1 var2
+  PUSH  var3
+  RETURN
+
+FUNCTION dest_add_imm(integer):integer
+  STORE var1 arg0
+  ADD   var3 var1 2
+  PUSH  var3
+  RETURN
+
+FUNCTION dest_add_stack(integer, integer): integer
+  STORE var1 arg0
+  PUSH  arg1
+  ADD   var3 var1 a
+  PUSH  var3
+  RETURN