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Title *

Slug *

Module Name *

Difficulty *

Vector Array Logic

Implement a module that uses a vector array (4-bit elements) to store and retrieve values.

Module Interface

Inputs:
- clk: Clock signal
- reset: Reset signal (active high)
- addr: 2-bit address
Output:
- data_out: 4-bit data output

Expected Behavior

On reset: Initialize array with values [0001, 0010, 0100, 1000]
On each clock edge: Output the value at array[addr]

Hints (Optional)

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Create an array of 4-bit vectors. Initialize them with the specified pattern in the reset condition.

Initial Code *

Testbench *

Correct Output (JSON) *

{
  "testbench": {
    "clk": [
      0,
      1,
      0,
      1,
      0,
      1,
      0,
      1,
      0,
      1,
      0,
      1,
      0,
      1,
      0,
      1,
      0
    ],
    "uut": {
      "clk": [
        0,
        1,
        0,
        1,
        0,
        1,
        0,
        1,
        0,
        1,
        0,
        1,
        0,
        1,
        0,
        1,
        0
      ],
      "addr": [
        0,
        0,
        0,
        0,
        0,
        0,
        1,
        1,
        1,
        1,
        2,
        2,
        2,
        2,
        3,
        3,
        3
      ],
      "reset": [
        1,
        1,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0,
        0
      ],
      "data_out": [
        1,
        1,
        1,
        1,
        1,
        2,
        2,
        2,
        2,
        4,
        4,
        4,
        4,
        8,
        8,
        8,
        8
      ]
    },
    "addr": [
      0,
      0,
      0,
      0,
      0,
      0,
      1,
      1,
      1,
      1,
      2,
      2,
      2,
      2,
      3,
      3,
      3
    ],
    "reset": [
      1,
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ],
    "data_out": [
      1,
      1,
      1,
      1,
      1,
      2,
      2,
      2,
      2,
      4,
      4,
      4,
      4,
      8,
      8,
      8,
      8
    ]
  }
}

Enter the expected output as valid JSON format that will be used to verify student submissions.