diff --git a/Makefile b/Makefile
index fca8a95..e7ba771 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
 comp:
 	lex compiler/lex.l
 	yacc -d compiler/grammar.y
-	gcc -o bin/main y.tab.c lex.yy.c compiler/create.c compiler/compiler.c compiler/codegen.c main/main.c
+	gcc -o bin/main y.tab.c lex.yy.c compiler/create.c compiler/compiler.c compiler/codegen.c compiler/opcode.c main/main.c
diff --git a/compiler/opcode.c b/compiler/opcode.c
new file mode 100644
index 0000000..f32fcce
--- /dev/null
+++ b/compiler/opcode.c
@@ -0,0 +1,88 @@
+#include "../include/SVM_code.h"
+
+OpcodeInfo dvm_opcode_info[] = {
+    {"FALSE", "", -1},
+    {"PUSHDATA1", "b", 1},
+    {"PUSHDATA2", "s", 1},
+    {"PUSHDATA4", "l", 1},
+    {"NEGATE", "", 0},
+    {"NOP", "", 1},
+    {"JUMP", "", -1},
+    {"JUMPIF", "", -1},
+    {"VERIFY", "", -1},
+    {"FAIL", "", -1},
+    {"TOALTSTACK", "", 1},
+    {"FROMALTSTACK", "", 1},
+    {"DROP2", "", -1},
+    {"DUP2", "", 1},
+    {"DUP3", "", 1},
+    {"OVER2", "", 1},
+    {"ROT2", "", 1},
+    {"SWAP2", "", 1},
+    {"IFDUP", "", 1},
+    {"DEPTH", "", 1},
+    {"DROP", "", -1},
+    {"DUP", "", 1},
+    {"NIP", "", 1},
+    {"OVER", "", 1},
+    {"PICK", "", 1},
+    {"ROLL", "", 1},
+    {"ROT", "", 1},
+    {"SWAP", "", 1},
+    {"TUCK", "", 1},
+    {"CAT", "", 1},
+    {"SUBSTR", "", 1},
+    {"LEFT", "", 1},
+    {"RIGHT", "", 1},
+    {"SIZE", "", 1},
+    {"CATPUSHDATA", "", 1},
+    {"INVERT", "", 1},
+    {"AND", "", -1},
+    {"OR", "", -1},
+    {"XOR", "", -1},
+    {"EQUAL", "", -1},
+    {"EQUALVERIFY", "", -1},
+    {"ADD1", "", -1},
+    {"SUB1", "", -1},
+    {"MUL2", "", -1},
+    {"DIV2", "", -1},
+    {"NEGATE", "", -1},
+    {"ABS", "", 0},
+    {"NOT", "", 0},
+    {"NOTEQUAL0", "", 0},
+    {"ADD", "", -1},
+    {"SUB", "", -1},
+    {"MUL", "", -1},
+    {"DIV", "", -1},
+    {"MOD", "", -1},
+    {"LSHIFT", "", -1},
+    {"RSHIFT", "", -1},
+    {"BOOLAND", "", -1},
+    {"BOOLOR", "", -1},
+    {"NUMEQUAL", "", -1},
+    {"NUMEQUALVERIFY", "", -1},
+    {"NUMNOTEQUAL", "", -1},
+    {"LESSTHAN", "", -1},
+    {"GREATERTHAN", "", -1},
+    {"LESSTHANOREQUAL", "", -1},
+    {"GREATERTHANOREQUAL", "", -1},
+    {"MIN", "", -1},
+    {"MAX", "", -1},
+    {"WITHIN", "", -1},
+    /**********/
+    {"SHA256", "", 0},
+    {"SHA3", "", 0},
+    {"HASH160", "", 0},
+    {"CHECKSIG", "", -1},
+    {"CHECKMULTISIG", "", -1},
+    {"TXSIGHASH", "", 0},
+    /**********/
+    {"CHECKOUTPUT", "", -1},
+    {"ASSET", "", -1},
+    {"AMOUNT", "", -1},
+    {"PROGRAM", "", -1},
+    {"INDEX", "", -1},
+    {"ENTRYID", "", -1},
+    {"OUTPUTID", "", -1},
+    {"BLOCKHEIGHT", "", -1},
+};
\ No newline at end of file
diff --git a/include/SVM_code.h b/include/SVM_code.h
new file mode 100644
index 0000000..0f6a887
--- /dev/null
+++ b/include/SVM_code.h
@@ -0,0 +1,97 @@
+#ifndef _SVMCODE_H_
+#define _SVMCODE_H_
+
+typedef enum {
+    FALSE = 1,
+    PUSHDATA1,
+    PUSHDATA2,
+    PUSHDATA4,
+    NEGATE1,
+    NOP,
+    JUMP,
+    JUMPIF,
+    VERIFY,
+    FAIL,
+    TOALTSTACK,
+    FROMALTSTACK,
+    DROP2,
+    DUP2,
+    DUP3,
+    OVER2,
+    ROT2,
+    SWAP2,
+    IFDUP,
+    DEPTH,
+    DROP,
+    DUP,
+    NIP,
+    OVER,
+    PICK,
+    ROLL,
+    ROT,
+    SWAP,
+    TUCK,
+    CAT,
+    SUBSTR,
+    LEFT,
+    RIGHT,
+    SIZE,
+    CATPUSHDATA,
+    INVERT,
+    AND,
+    OR,
+    XOR,
+    EQUAL,
+    EQUALVERIFY,
+    ADD1,
+    SUB1,
+    MUL2,
+    DIV2,
+    NEGATE,
+    ABS,
+    NOT,
+    NOTEQUAL0,
+    ADD,
+    SUB,
+    MUL,
+    DIV,
+    MOD,
+    LSHIFT,
+    RSHIFT,
+    BOOLAND,
+    BOOLOR,
+    NUMEQUAL,
+    NUMEQUALVERIFY,
+    NUMNOTEQUAL,
+    LESSTHAN,
+    GREATERTHAN,
+    LESSTHANOREQUAL,
+    GREATERTHANOREQUAL,
+    MIN,
+    MAX,
+    WITHIN,
+    /**********/
+    SHA256,
+    SHA3,
+    HASH160,
+    CHECKSIG,
+    CHECKMULTISIG,
+    TXSIGHASH,
+    /**********/
+    CHECKOUTPUT,
+    ASSET,
+    AMOUNT,
+    PROGRAM,
+    INDEX,
+    ENTRYID,
+    OUTPUTID,
+    BLOCKHEIGHT
+}SVM_Opcode;
+
+typedef struct {
+    char        *mnemonic;
+    char        *parameter;
+    int         stack_increment;
+} OpcodeInfo;
+
+#endif
\ No newline at end of file