failing on the 6th step

contracts/MIPSMemory.sol

@@ -2,12 +2,8 @@
 pragma solidity ^0.7.3;
 
 import "./lib/Lib_Keccak256.sol";
-//import "hardhat/console.sol";
 import "./lib/Lib_MerkleTrie.sol";
 
-//import { Lib_RLPReader } from "./lib/Lib_RLPReader.sol";
-//import { Lib_BytesUtils } from "./lib/Lib_BytesUtils.sol";
-
 contract MIPSMemory {
   // TODO: the trie library should read and write from this as appropriate
   mapping(bytes32 => bytes) public trie;
@@ -74,14 +70,6 @@ contract MIPSMemory {
     return ret;
   }
 
-  /*mapping(bytes32 => mapping(uint32 => bytes)) proofs;
-
-  function AddMerkleProof(bytes32 stateHash, uint32 addr, bytes calldata proof) public {
-    // validate proof
-    Lib_MerkleTrie.get(tb(addr), proof, stateHash);
-    proofs[stateHash][addr] = proof;
-  }*/
-
   function WriteMemory(bytes32 stateHash, uint32 addr, uint32 value) public returns (bytes32) {
     require(addr & 3 == 0, "write memory must be 32-bit aligned");
     return Lib_MerkleTrie.update(tb(addr>>2), tb(value), trie, stateHash);
@@ -140,46 +128,6 @@ contract MIPSMemory {
     } else {
       return fb(value);
     }
-
-    /*bytes memory key = Lib_BytesUtils.toNibbles(tb(addr>>2));
-    bytes32 cnode = stateHash;
-    uint256 idx = 0;
-
-    while (true) {
-      Lib_RLPReader.RLPItem[] memory node = Lib_RLPReader.readList(trie[cnode]);
-      if (node.length == BRANCH_NODE_LENGTH) {
-        //revert("node length bnl");
-        uint8 branchKey = uint8(key[idx]);
-        if (idx == key.length-1) {
-          //if (addr != 0xc0000080) revert("here");
-          Lib_RLPReader.RLPItem[] memory lp = Lib_RLPReader.readList(node[branchKey]);
-          require(lp.length == 2, "wrong RLP list length");
-          return fb(Lib_RLPReader.readBytes(lp[1]));
-        } else {
-          cnode = Lib_RLPReader.readBytes32(node[branchKey]);
-          idx += 1;
-        }
-      } else if (node.length == LEAF_OR_EXTENSION_NODE_LENGTH) {
-        bytes memory path = Lib_BytesUtils.toNibbles(Lib_RLPReader.readBytes(node[0]));
-        uint8 prefix = uint8(path[0]);
-        if (prefix == PREFIX_LEAF_EVEN || prefix == PREFIX_LEAF_ODD) {
-          // TODO: check match
-          //return fb(Lib_RLPReader.readList(node[1]));
-          // broken
-        } else if (prefix == PREFIX_EXTENSION_EVEN || prefix == PREFIX_EXTENSION_ODD) {
-          // TODO: check match
-          if (prefix == PREFIX_EXTENSION_EVEN) {
-            idx += path.length - 2;
-          } else {
-            idx += path.length - 1;
-          }
-          cnode = Lib_RLPReader.readBytes32(node[1]);
-        }
-      } else {
-        revert("node in trie broken");
-      }
-    }*/
-    //return fb(get(tb(addr>>2), stateHash));
   }
 
 }
\ No newline at end of file

mipsevm/full.go

@@ -57,15 +57,16 @@ func RunFull() {
 	ZeroRegisters(ram)
 	ram[0xC000007C] = 0x5EAD0000
 	root := RamToTrie(ram)
-	fmt.Println("state root", root, "nodes", len(Preimages))
-	ParseNode(root, 0)
+	//ParseNode(root, 0)
 
 	for k, v := range Preimages {
 		fmt.Println("AddTrieNode", k)
 		addTrieNode(v, interpreter, statedb)
 	}
 	fmt.Println("trie is ready, let's run")
+	fmt.Println("state root", root, "nodes", len(Preimages))
 
+	for step := 0; step < 10; step++ {
 		// it's run o clock
 		from := common.Address{}
 		to := common.HexToAddress("0x1337")
@@ -86,6 +87,8 @@ func RunFull() {
 			}
 			log.Fatal(err)
 		} else {
-		fmt.Println("exited", common.BytesToHash(dat))
+			root = common.BytesToHash(dat)
+			fmt.Println("new state root", step, root)
+		}
 	}
 }

mipsevm/minievm.go

@@ -56,7 +56,9 @@ func (b *StateDB) ForEachStorage(addr common.Address, cb func(key, value common.
 }
 func (s *StateDB) GetBalance(addr common.Address) *big.Int { return common.Big0 }
 func (s *StateDB) GetCode(addr common.Address) []byte {
+	if s.Debug >= 1 {
 		fmt.Println("GetCode", addr)
+	}
 	return s.Bytecodes[addr]
 }
 func (s *StateDB) GetCodeHash(addr common.Address) common.Hash { return common.Hash{} }
@@ -70,7 +72,9 @@ func (s *StateDB) GetRefund() uint64                   { return 0 }
 func (s *StateDB) GetState(fakeaddr common.Address, hash common.Hash) common.Hash {
 	if s.useRealState {
 		// TODO: fakeaddr?
+		if s.Debug >= 1 {
 			fmt.Println("GetState", fakeaddr, hash)
+		}
 		return s.RealState[hash]
 	}
 	ram := s.Ram
@@ -147,7 +151,9 @@ func (s *StateDB) SetCode(addr common.Address, code []byte) {
 func (s *StateDB) SetNonce(addr common.Address, nonce uint64) {}
 func (s *StateDB) SetState(fakeaddr common.Address, key, value common.Hash) {
 	if s.useRealState {
+		if s.Debug >= 1 {
 			fmt.Println("SetState", fakeaddr, key, value)
+		}
 		s.RealState[key] = value
 		return
 	}