| Command | opcode | Description |
|---|---|---|
| Command | 0000 | Description |
| No-Operation | 0000 | System is idle, and stays in a ready state |
| Reset | 0001 | Clear all value to 0, and go to ready state |
| ADD | 0100 | Add the input to current value of accumulator |
| SUBTRACT | 0101 | Subtract the input from current value |
| AND | 1000 | perform an AND operation the current value with the input value |
| OR | 1001 | perform an OR operation the current value with the input value |
| XOR | 1010 | perform an XOR operation the current value with the input value |
| NAND | 1011 | perform an NAND operation the current value with the input value |
| NOR | 1100 | perform an NOR operation the current value with the input value |
| NOT | 1101 | perform an NOT operation the current value |