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Robot Odyssey - Low Latency 4-way Flip Flop

2,921 views · Published 5 April 2009 · 0:31 · Indexed 6 October 2026

Channel: scanlime · 2009 · Gaming

One design for a 4-way flip-flop chip in Robot Odyssey. This is a flip-flop that has four inputs and four outputs. When one input is on, its corresponding output turns on and all others turn off. This chip can be the basis for lots of interesting robot motion circuits, including the Wall Hugger.

This design uses a positive edge detector (the AND and NOT gate in the middle) to reset the other flip flops. Without this circuit, the 'off' signal at the output flip-flops would still be high even after the 'on' signal has disappeared, so the flip-flop would not latch. Another alternative would be to add a two-gate propagation delay to the 'on' signals, so they don't disappear too early. This method has lower latency than that approach: The 'on' signal appears with no extra gate delay.

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Robot Odyssey - Low Latency 4-way Flip Flop

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