KmilaProcesses and sensitivity lists
What a process really is, and why leaving a signal off the sensitivity list is a bug.
Sequential logic
Circuits that remember. Flip-flops, registers, shift registers, counters.
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Sample: D flip-flop with async reset
The simplest stateful element. Watch d propagate to q only on rising clock edges.
Sample: 8-bit shift register
Serial-in / parallel-out shift register — useful inside UARTs, SPI controllers, deserializers.
Fix it: the accidental latch
This combinational design synthesizes a latch. Identify why and fix the code so only a flip-flop is inferred.