diff --git a/13display_digit.asm b/13display_digit.asm
new file mode 100644
index 0000000..a9282d1
--- /dev/null
+++ b/13display_digit.asm
@@ -0,0 +1,6 @@
+    lui     $s0,    0x4000
+    addi    $s0,    $s0,    0x10
+    addi    $s1,    $zero,  0x1ff
+    sw      $s1,    0($s0)
+end:
+    j       end
\ No newline at end of file
diff --git a/13display_digit.txt b/13display_digit.txt
new file mode 100644
index 0000000..6ac9038
--- /dev/null
+++ b/13display_digit.txt
@@ -0,0 +1,5 @@
+20'd0: instruction <= 32'h3c104000;
+20'd1: instruction <= 32'h22100010;
+20'd2: instruction <= 32'h201101ff;
+20'd3: instruction <= 32'hae110000;
+20'd4: instruction <= 32'h08000004;
diff --git a/13display_digit_mars.txt b/13display_digit_mars.txt
new file mode 100644
index 0000000..42af9b3
--- /dev/null
+++ b/13display_digit_mars.txt
@@ -0,0 +1,5 @@
+3c104000
+22100010
+201101ff
+ae110000
+08000004
diff --git a/bcd_digits.md b/bcd_digits.md
new file mode 100644
index 0000000..bc0f049
--- /dev/null
+++ b/bcd_digits.md
@@ -0,0 +1,18 @@
+| Digit |  Binary   |  Hex   |
+| :---: | :-------: | :----: |
+|   0   | `0111111` | `0x3f` |
+|   1   | `0000110` | `0x6`  |
+|   2   | `1011011` | `0x5b` |
+|   3   | `1001111` | `0x4f` |
+|   4   | `1100110` | `0x66` |
+|   5   | `1101101` | `0x6d` |
+|   6   | `1111101` | `0x7d` |
+|   7   | `0000111` | `0x7`  |
+|   8   | `1111111` | `0x7f` |
+|   9   | `1101111` | `0x6f` |
+|   A   | `1110111` | `0x77` |
+|   B   | `1111100` | `0x7c` |
+|   C   | `1011000` | `0x58` |
+|   D   | `1011110` | `0x5e` |
+|   E   | `1111001` | `0x79` |
+|   F   | `1110001` | `0x71` |
diff --git a/create_verilog_from_asm.py b/create_verilog_from_asm.py
index e65b294..f298f51 100644
--- a/create_verilog_from_asm.py
+++ b/create_verilog_from_asm.py
@@ -1,5 +1,7 @@
 file_name = input("File name: ")
-with open(file_name) as fl:
+with open(file_name + "_mars.txt") as fl:
     file_content = fl.readlines()
-for idx, inst in enumerate(file_content):
-    print("20'd%d: instruction <= 32'h%s;" % (idx, inst.strip()))
\ No newline at end of file
+with open(file_name + ".txt", "w") as fl:
+    for idx, inst in enumerate(file_content):
+        # print("20'd%d: instruction <= 32'h%s;" % (idx, inst.strip()))
+        fl.write("20'd%d: instruction <= 32'h%s;\n" % (idx, inst.strip()))