The current DMux8Way.cmp file in the Nand2tetris Software Suite Version 2.7 download is blank.
The file should (and has in previous downloads) contain:
| in | sel | a | b | c | d | e | f | g | h |
| 0 | 000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 001 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 010 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 011 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 101 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 110 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 111 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 000 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 001 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 010 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 1 | 011 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| 1 | 100 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 1 | 101 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 1 | 110 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 1 | 111 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |