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Four interrupts, one each inside the top four rows of puzzle cells. This updates the Y coordinates of the drop shadows and enables the appropriate columns with a write to $D015. One of these four will also be responsible for moving the other three sprites into their lower positions, thus handling the bottom half of the left-side shadow and the corners.
，这一点在体育直播中也有详细论述
Offer ends March 13.
An example use case: let’s say we have a module that is responsible for synchronizing data with an external system. We could implement the first version with support only for direct, synchronous HTTP calls. If the module’s interface is well-designed, we would be able to substitute it later for a new version that utilizes an outbox pattern (where the synchronization is paused when there’s no internet connection).