NEG                         NEG Negate                                NEG

  Operation:  Negate Accumulator                        N V - B D I Z C
                                                        / . . . . . / .

 4510 Versions:

  +----------------+-----------------------+---------+---------+----------+
  | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles|
  +----------------+-----------------------+---------+---------+----------+
  |  Accumulator    |   NOP                |   $42   |    1    |    1s    |
  +----------------+-----------------------+---------+---------+----------+
  s Instruction requires 2 cycles when CPU is run at 1 MHz or 2 MHZ