In-circuit programming of M-8 chips

Question: How to program M8 Chips in-circuit?

 

Answer:

We recommend that the M8 chips be programmed prior to being soldered on the board. This negates the possibility of other components on the board affecting the signals going into the ROM. If the customers must program the M8 chips in circuit, they'll need to make sure that the discrete components on the board will not have any impact on the programming signals that come from the programmer.