diff --git a/docs/todos.md b/docs/todos.md
index 130ecab..533db15 100644
--- a/docs/todos.md
+++ b/docs/todos.md
@@ -1,37 +1,38 @@
 # Todos
 
 - [x] How to capture arguments passed to a C program
-    
+
       ```c
-      // argc is the number of args passed
-      // argc is always 1 or more
-      // argc always has name/path of program as first arg
-      int main(int argc, char *argv[]) {
-      // do stuff with the args
-      }
-      ```
+          // argc is the number of args passed
+          // argc is always 1 or more
+          // argc always has name/path of program as first arg
+          int main(int argc, char *argv[]) {
+          // do stuff with the args
+          }
+          ```
+
 - [x] How to print argument value
-      
-      ```
-      printf("%s", argv[1]);
+
       ```
+          printf("%s", argv[1]);
+          ```
 
 - [x] Read a file
-    
-      ```c
-      // open file in read mode. returns NULL if doesn't exist
-      FILE *file_ptr = fread(file_path, "r");
-      
-      // seeking to end of file.
-      // useful telling number of bytes
-      fseek(file_ptr, 0, SEEK_END);
 
-      // get number of bytes
-      int num_of_bytes = ftell(file_ptr);
-      
-      // seek to begin of file
-      fseek(file_ptr, 0, SEEK_SET);
-      ```
+      ```c
+          // open file in read mode. returns NULL if doesn't exist
+          FILE *file_ptr = fread(file_path, "r");
+
+          // seeking to end of file.
+          // useful telling number of bytes
+          fseek(file_ptr, 0, SEEK_END);
+
+          // get number of bytes
+          int num_of_bytes = ftell(file_ptr);
+
+          // seek to begin of file
+          fseek(file_ptr, 0, SEEK_SET);
+          ```
 
 - [x] Store contents of file in memory
 - [x] Print file contents
@@ -42,16 +43,16 @@
 - [x] Write all CHIP-8 IBM logo opcodes to CSV file
 - [x] Implement opcodes present in the IMB logo CHIP-8 file
 
-  | x | Opcode | Type | Description                  |
-  |---|--------|------|------------------------------|
-  | x | `00E0` | 00E0 | Clear display                |
-  | x | `1nnn` | 1nnn | Jump to address              |
-  | x | `3xkk` | 3xkk | Skip next if Vx == kk        |
-  | x | `6xkk` | 6xkk | Load register with immediate |
-  | x | `7xkk` | 7xkk | Add immediate to Vx          |
-  | x | `ANNN` | ANNN | Set index register           |
-  | x | `Bnnn` | Bnnn | Jump to V0 + addr            |
-  | x | `Dxyn` | Dxyn | Draw sprite                  |
+  | x   | Opcode | Type | Description                  |
+  | --- | ------ | ---- | ---------------------------- |
+  | x   | `00E0` | 00E0 | Clear display                |
+  | x   | `1nnn` | 1nnn | Jump to address              |
+  | x   | `3xkk` | 3xkk | Skip next if Vx == kk        |
+  | x   | `6xkk` | 6xkk | Load register with immediate |
+  | x   | `7xkk` | 7xkk | Add immediate to Vx          |
+  | x   | `ANNN` | ANNN | Set index register           |
+  | x   | `Bnnn` | Bnnn | Jump to V0 + addr            |
+  | x   | `Dxyn` | Dxyn | Draw sprite                  |
 
 - [x] Refactor main
 - [x] Migrate drawing to raylib window
@@ -60,19 +61,32 @@
 
 - [ ] Implement remaining instructions
 
-  | x | Opcode | Type | Description                  |
-  |---|--------|------|------------------------------|
-  | x | `00EE` | 00EE | Return from subroutine       |
-  | x | `2nnn` | 2nnn | Call subroutine at nnn       |
-  | x | `4xkk` | 4xkk | Skip next if Vx != kk        |
-  | x | `5xy0` | 5xy0 | Skip next if Vx == Vy        |
-  | x | `8xy0` | 8xy0 | Stores Vy in Vx              |
-  | x | `8xy1` | 8xy1 ||
-  | x | `8xy2` | 8xy2 ||
-  | x | `8xy3` | 8xy3 ||
-  | x | `8xy4` | 8xy4 ||
-  | x | `8xy5` | 8xy5 ||
-  | x | `8xy6` | 8xy6 ||
-  | x | `8xy7` | 8xy7 ||
-  | x | `8xy8` | 8xy8 ||
-  | x | `Cxkk` | Cxkk ||
+  |  x  | Opcode | Type | Description                                                     |
+  | --- | ------ | ---- | --------------------------------------------------------------- |
+  |  x  | `00EE` | 00EE | Return from subroutine                                          |
+  |  x  | `2nnn` | 2nnn | Call subroutine at nnn                                          |
+  |  x  | `4xkk` | 4xkk | Skip next if Vx != kk                                           |
+  |  x  | `5xy0` | 5xy0 | Skip next if Vx == Vy                                           |
+  |  x  | `8xy0` | 8xy0 | Stores Vy in Vx                                                 |
+  |  x  | `8xy1` | 8xy1 | Set Vx = Vx OR Vy                                               |
+  |  x  | `8xy2` | 8xy2 | Set Vx = Vx AND Vy                                              |
+  |  x  | `8xy3` | 8xy3 | Set Vx = Vx XOR Vy                                              |
+  |  x  | `8xy4` | 8xy4 | Set Vx = Vx + Vy, set VF = carry                                |
+  |  x  | `8xy5` | 8xy5 | Set Vx = Vx - Vy, set VF = NOT borrow                           |
+  |  x  | `8xy6` | 8xy6 | Set Vx = Vx SHR 1                                               |
+  |  x  | `8xy7` | 8xy7 | Set Vx = Vy - Vx, set VF = NOT borrow                           |
+  |  x  | `8xyE` | 8xyE | Set Vx = Vx SHL 1                                               |
+  |     | `9xy0` | 9xy0 | Skip next if Vx != Vy                                           |
+  |  x  | `Cxkk` | Cxkk | Set Vx = random byte AND kk                                     |
+  |     | `Ex9E` | Ex9E | Skip next if key Vx is pressed                                  |
+  |     | `ExA1` | ExA1 | Skip next if key Vx is not pressed                              |
+  |     | `Fx07` | Fx07 | Set Vx = delay timer value                                      |
+  |     | `Fx0A` | Fx0A | Wait for key press, store key in Vx                             |
+  |     | `Fx15` | Fx15 | Set delay timer = Vx                                            |
+  |     | `Fx18` | Fx18 | Set sound timer = Vx                                            |
+  |     | `Fx1E` | Fx1E | Set I = I + Vx                                                  |
+  |     | `Fx29` | Fx29 | Set I = location of sprite for digit Vx                         |
+  |     | `Fx33` | Fx33 | Store BCD representation of Vx in memory                        |
+  |     | `Fx55` | Fx55 | Store registers V0 through Vx in memory starting at location I  |
+  |     | `Fx65` | Fx65 | Read registers V0 through Vx from memory starting at location I |
+  |     | `0nnn` | 0nnn | Jump to machine code routine (ignored)                          |
diff --git a/main.c b/main.c
index f4b075f..457640e 100644
--- a/main.c
+++ b/main.c
@@ -275,7 +275,7 @@ int main(int argc, char *argv[]) {
           } else if (n == 7) {
             chip->V[15] = (chip->V[y] > chip->V[x]) ? 1 : 0;
             chip->V[x] = chip->V[y] - chip->V[x];
-          } else if (n == 8) {
+          } else if (n == 14) {
             uint8_t flag = (chip->V[x] & 128) >> 7;
             chip->V[15] = flag;
             chip->V[x] *= 2;