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by Scarlett
Fri Oct 31, 2014 8:04 am
Forum: Games
Topic: Space Invaders (Midway)
Replies: 5
Views: 10340

Re: Space Invaders (Midway)

A last thing to know : If none of the Joystick switches is actuated, then the six inputs will be at logic state 1. It means that when a switch is actuated, the logic status of the corresponding input changes to 0. To know the status of the JS you just have to read the port A of VIA. (LDA$301) My JS ...