The AMS PDA is seen in Both House of The Dead 3 , and House of The Dead 4 and House of The Dead 4 Special. The original PDA is seen in the fourth game, and an updated PDA is seen in the third game. The AMS PDA is used for several things: weakpoints of bosses, (in all three games) chosing between paths, (THoTD4 and THoTD4 SP) and self - destructing. (Possibly all three games)
The PDA came into House of The Dead to replace the original book formula that was used to show the boss weakpoints in the first two games. Like the book weakpoint system, the PDA doesn't show the weakpoints of the final boss; classing them as 'unknown'.