diff --git a/README.md b/README.md
index 7ecb85c..5a08f53 100644
--- a/README.md
+++ b/README.md
@@ -1,31 +1,32 @@
 # r16
 
 | number | instruction | argument 1 | argument 2 | explanation                                       |
-|-------:|:-----------:|:----------:|:----------:|---------------------------------------------------|
-|   0x00 |     HLT     |            |            | halts the CPU                                     |
-|   0x01 |     ADD     |   value 1  |   value 2  | ACU = value 1 + value 2                           |
-|   0x02 |     SUB     |   value 1  |   value 2  | ACU = value 1 - value 2                           |
-|   0x03 |     MUL     |   value 1  |   value 2  | ACU = value 1 * value 2                           |
-|   0x04 |     DIV     |   value 1  |   value 2  | ACU = value 1 / value 2                           |
-|   0x05 |     LBS     |    value   |   amount   | ACU = value << amount                             |
-|   0x06 |     RBS     |    value   |   amount   | ACU = value << amount                             |
-|   0x07 |     BAN     |   value 1  |   value 2  | ACU = value 1 & value 2                           |
-|   0x08 |     BOR     |   value 1  |   value 2  | ACU = value 1 \| value 2                          |
-|   0x09 |     BXO     |   value 1  |   value 2  | ACU = value 1 ^ value 2                           |
-|   0x0A |     BNO     |    value   |            | ACU = ~ value                                     |
-|   0x0B |     PUS     |    value   |            | pushes value onto the stack                       |
-|   0x0C |     POP     |            |            | pops a value from the stack and stores it in ACU  |
-|   0x0D |     JMP     |   address  |            | jumps to address                                  |
-|   0x0E |     JEQ     |   address  |    value   | jumps to address, if value is equal to ACU        |
-|   0x0F |     JNZ     |   address  |    value   | jumps to address, if value is not zero            |
-|   0x10 |     CAL     |   address  |            | pushes PC + 1 to the stack, then jumps to address |
-|   0x11 |     RET     |            |            | pops value from stack and jumps to it             |
-|   0x12 |     REG     |  int type  |   address  | registers int type to address                     |
-|   0x13 |     INT     |  int type  |            | interrupts as int type                            |
-|   0x14 |     INP     |            |            | inputs a character into ACU                       |
-|   0x15 |     OUT     |    value   |            | outputs value                                     |
-|   0x16 |     DIN     |  location  |            | reads value from disk at location to ACU          |
-|   0x17 |     DOT     |  location  |    value   | writes value to disk at location                  |
+|--------|-------------|------------|------------|---------------------------------------------------|
+| 0x00   | HLT         |            |            | halts the CPU                                     |
+| 0x01   | ADD         | value 1    | value 2    | ACU = value 1 + value 2                           |
+| 0x02   | SUB         | value 1    | value 2    | ACU = value 1 - value 2                           |
+| 0x03   | MUL         | value 1    | value 2    | ACU = value 1 * value 2                           |
+| 0x04   | DIV         | value 1    | value 2    | ACU = value 1 / value 2                           |
+| 0x05   | LBS         | value      | amount     | ACU = value << amount                             |
+| 0x06   | RBS         | value      | amount     | ACU = value << amount                             |
+| 0x07   | BAN         | value 1    | value 2    | ACU = value 1 & value 2                           |
+| 0x08   | BOR         | value 1    | value 2    | ACU = value 1 \                                   |
+| 0x09   | BXO         | value 1    | value 2    | ACU = value 1 ^ value 2                           |
+| 0x0A   | BNO         | value      |            | ACU = ~ value                                     |
+| 0x0B   | PUS         | value      |            | pushes value onto the stack                       |
+| 0x0C   | POP         |            |            | pops a value from the stack and stores it in ACU  |
+| 0x0D   | JMP         | address    |            | jumps to address                                  |
+| 0x0E   | JEQ         | address    | value      | jumps to address, if value is equal to ACU        |
+| 0x0F   | JNZ         | address    | value      | jumps to address, if value is not zero            |
+| 0x10   | CAL         | address    |            | pushes PC + 1 to the stack, then jumps to address |
+| 0x11   | RET         |            |            | pops value from stack and jumps to it             |
+| 0x12   | REG         | int type   | address    | registers int type to address                     |
+| 0x13   | INT         | int type   |            | interrupts as int type                            |
+| 0x14   | INP         |            |            | inputs a character into ACU                       |
+| 0x15   | OUT         | value      |            | outputs value                                     |
+| 0x16   | DIN         | location   |            | reads value from disk at location to ACU          |
+| 0x17   | DOT         | location   | value      | writes value to disk at location                  |
+| 0x18   | MOV         | value 1    | value 2    | move value 2 to value 1                           |
 
 | Number | Register | Usage           |
 |-------:|---------:|-----------------|
diff --git a/emu/cpu_const.h b/emu/cpu_const.h
new file mode 100644
index 0000000..23dabc3
--- /dev/null
+++ b/emu/cpu_const.h
@@ -0,0 +1,56 @@
+#ifndef EMU_CPU_CONST_H
+#define EMU_CPU_CONST_H
+
+typedef enum
+{
+    HLT = 0x00,
+    ADD = 0x01,
+    SUB = 0x02,
+    MUL = 0x03,
+    DIV = 0x04,
+    LBS = 0x05,
+    RBS = 0x06,
+    BAN = 0x07,
+    BOR = 0x08,
+    BXO = 0x09,
+    BNO = 0x0A,
+    PUS = 0x0B,
+    POP = 0x0C,
+    JMP = 0x0D,
+    JEQ = 0x0E,
+    JNZ = 0x0F,
+    CAL = 0x10,
+    RET = 0x11,
+    REG = 0x12,
+    INT = 0x13,
+    INP = 0x14,
+    OUT = 0x15,
+    DIN = 0x16,
+    DOT = 0x17,
+    MOV = 0x18
+} CpuInstructions;
+
+typedef enum
+{
+    R0  = 0x0,
+    R1  = 0x1,
+    R2  = 0x2,
+    R3  = 0x3,
+    ACU = 0x4,
+    PC  = 0x5,
+    SP  = 0x6
+} CpuRegisters;
+
+typedef enum
+{
+    value               = 0x0,
+    register            = 0x1,
+    ram                 = 0x2,
+    pointerInRegister   = 0x3
+} ArgumentInfo;
+
+#define INSTRUCTION_BIT_MASK        0b1111111111110000
+#define INSTRUCTION_ARG_1_INFO_MASK 0b0000000000001100
+#define INSTRUCTION_ARG_2_INFO_MASK 0b0000000000000011
+
+#endif
\ No newline at end of file