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hardware:magic_system [2016/06/11 12:30] ex_writer [Intercept Register (Collision Detection)] |
hardware:magic_system [2016/06/11 12:35] (current) ex_writer [Example: Space Invaders] |
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| - | Directly after the pattern write, intercept status is loaded in A, then A is ORed to see if any bits are set (indicating an intercept). If the OR result is 0, no collision occurs, and the collision check subroutine exits. | + | Directly after the pattern write, intercept status is loaded in A, then A is ORed to see if any bits are set (indicating an intercept). If the OR result is 0, no collision occurs, and the collision check subroutine exits. (//Football// uses an identical check.) |
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