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Special cases:
INC and DEC do not take operands.
Valid instructions:
| OPCODE(hex) | OPCODE | OPERANDS | Explanation |
| a0 | ADD | #address | Add the contents of #address to the accumulator |
| A0 | ADD | value | Add the value to the accumulator |
| a2 | SUB | #address | Subtract the contents of #address from the accumulator |
| A2 | SUB | value | Subtract the value from the accumulator |
| a3 | MUL | #address; | Mulitply the accumulator by the contents of #address |
| A3 | MUL | value | Multiply the accumulator by this value |
| a4 | DIV | #address; | Divide the accumulator by the contens of #address |
| A4 | DIV | #address; | Divide the accumulator by this value |
| A5 | INC | no operand | Increment the accumulator |
| A6 | DEC | no operand | Decrement the accumulator |
| C0 | JMP | #address; | Jump to this address |
| C1 | JMPZ | #address; | If the accumulator is zero, jump to this address |
| C2 | JMPN | #address; | If the accumulator is negative, jump to this address |
| D2 | LOAD | #address; | Load the contents of this address into memory |
| D3 | STORE | #address; | Store the contents of the accumulator into memory |
| FF | HALT; | no operand | Stop the machine. Input this as your final instruction. Not required if program loops infinitely. |