codellama:13b | RAG on

module SNG(
    input seed,
    input enable,
    input reset,
    input clk,
    output reg [7:0] out_L
);

// Register to store the current state of the LFSR
reg [7:0] state;

// Wire for feedback calculation
wire [3:0] feedback;

// Assign initial value to state register
always @(posedge clk) begin
    if (reset) begin
        state <= seed;
    end else begin
        // Shift left and insert new feedback bit at LSB
        state <= {state[6:0], feedback};
    end
end

// Calculate feedback based on taps 7, 6, 5, and 4 of the register
always @(posedge clk) begin
    if (enable) begin
        feedback <= ^({state[7], state[6], state[5], state[4]});
    end else begin
        feedback <= 0;
    end
end
...

[stderr]
/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:28: error: feedback is not a valid l-value in SNG.
/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:13:      : feedback is declared here as wire.
/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:30: error: feedback is not a valid l-value in SNG.
/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:13:      : feedback is declared here as wire.
2 error(s) during elaboration.

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:28: error: feedback is not a valid l-value in SNG.\n/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:13:      : feedback is declared here as wire.\n/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:30: error: feedback is not a valid l-value in SNG.\n/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_1/generated.v:13:      : feedback is declared here as wire.\n2 error(s) during elaboration.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": false,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input seed,
    input enable,
    input reset,
    input clk,
    output reg [7:0] out_L
);

// Registers and wires
reg [7:0] out;
wire feedback;

// Feedback logic
assign feedback = (out[7] ^ out[6]) & (out[5] ^ out[4]);

// Shift register
always @(posedge clk) begin
    if (reset) begin
        out <= seed;
    end else begin
        out <= {out[6:0], feedback};
    end
end

// Output assignment
assign out_L = out;

endmodule

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input wire [7:0] seed,
    input wire enable,
    input wire reset,
    input wire clk,
    output reg [7:0] out_L
);

// Registers and wires
reg [7:0] out;
wire [3:0] feedback;

// Feedback logic
assign feedback = {out[7], out[6], out[5], out[4]};

always @(posedge clk) begin
    if (reset) begin
        out <= seed;
    end else if (enable) begin
        out <= {feedback, out[3:0]} ^ feedback;
    end
end

assign out_L = out;

endmodule

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input wire [7:0] seed,
    input wire enable,
    input wire reset,
    input wire clk,
    output reg [7:0] out_L
);

// Register for storing the current state of the LFSR
reg [7:0] lfsr;

// Wire for storing the feedback value
wire [3:0] feedback;

// Assign initial seed value to the register
always @(posedge clk) begin
    if (reset == 1'b1) begin
        lfsr <= seed;
    end
end

// Compute feedback value based on taps
assign feedback = ^lfsr[7:4];

// Shift register left and insert new feedback value at LSB
always @(posedge clk) begin
    if (enable == 1'b1) begin
        lfsr <= {lfsr[6:0], feedback};
    end
end

// Assign output port to current state of the register
...

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input wire [7:0] seed,
    input wire enable,
    input wire reset,
    input wire clk,
    output reg [7:0] out
);

// Registers
reg [7:0] out_L;
reg [7:0] feedback;

// Wires
wire [3:0] taps = {seed[7], seed[6], seed[5], seed[4]};

// Logic
always @(posedge clk) begin
    if (reset) begin
        out_L <= seed;
    end else begin
        out_L <= out_L << 1;
    end
end

assign feedback = taps ^ {out_L[7], out_L[6], out_L[5], out_L[4]};

always @(posedge clk) begin
    if (enable) begin
        out <= out_L ^ feedback;
    end else begin
        out <= 0;
    end
...

[stderr]
/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_5/generated.v:33: syntax error
I give up.

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:33: syntax error
I give up.

[error]
None

[
  {
    "stage": "syntax",
    "code": "syntax.iverilog_failed",
    "message": "/data/eval/out/run_20260426_075435_225972_f32200/tmp/codellama/rtllm__13_rtllm_memory__task_04/sample_5/generated.v:33: syntax error\nI give up.\n",
    "retryable": false,
    "details": {}
  },
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:33: syntax error\nI give up.\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": false,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input wire [7:0] seed,
    input wire enable,
    input wire reset,
    input wire clk,
    output reg [7:0] out
);

// Register to store the current state of the LFSR
reg [7:0] out_L;

// Wire for feedback calculation
wire [3:0] feedback;

// Assign initial value to out_L on reset
always @(posedge clk) begin
    if (reset) begin
        out_L <= seed;
    end
end

// Shift the register left and insert new feedback bit on positive edge of clock
always @(posedge clk) begin
    if (enable) begin
        out_L <= {out_L[6:0], feedback};
    end
end

// Calculate feedback using XOR of specific bits in the register
assign feedback = out_L[7] ^ out_L[6];

// Assign output value to out
...

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input wire [7:0] seed,
    input wire enable,
    input wire reset,
    input wire clk,
    output reg [7:0] out_L
);

// Registers and wires for the LFSR
reg [7:0] out;
wire [3:0] feedback;

// Feedback logic
always @(posedge clk) begin
    if (reset) begin
        out <= seed;
    end else begin
        out <= {out[6:0], feedback};
    end
end

// Feedback calculation
assign feedback = ^out[7:4];

// Output assignment
assign out_L = out;

endmodule

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input wire clk,
    input wire reset,
    input wire enable,
    input wire [7:0] seed,
    output reg [7:0] out_L
);

// Registers and wires
reg [7:0] feedback;
wire [7:0] out_H;

// Feedback calculation
always @(posedge clk) begin
    if (reset) begin
        feedback <= seed;
    end else begin
        feedback <= {feedback[6:0], feedback[7] ^ feedback[5]};
    end
end

// Shift register
always @(posedge clk) begin
    if (enable) begin
        out_L <= {out_H, feedback[7]};
    end else begin
        out_L <= seed;
    end
end

// Output assignment
assign out_H = {feedback[6:0], feedback[7] ^ feedback[5]};
...

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input seed,
    input enable,
    input reset,
    input clk,
    output reg [7:0] out
);

// Registers and wires
reg [7:0] out_L; // Output register
wire [3:0] feedback; // Feedback wire

// Initialization
always @(posedge reset) begin
    out <= seed;
end

// Shifting operation
always @(posedge clk) begin
    if (enable == 1'b1) begin
        out_L <= {out[6:0], feedback}; // Shift left and insert feedback bit
    end
end

// Feedback calculation
assign feedback = out[7] ^ out[6]; // XOR of bits 7 and 6

endmodule

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}

module SNG(
    input wire [7:0] seed,
    input wire enable,
    input wire reset,
    input wire clk,
    output reg [7:0] out_L
);

// Registers for storing the current state of the LFSR
reg [7:0] out;
reg [7:0] feedback;

// Taps for feedback calculation
wire tap1 = seed[7];
wire tap2 = seed[6];
wire tap3 = seed[5];
wire tap4 = seed[4];

// Feedback calculation
assign feedback = {tap1, tap2, tap3, tap4};

always @(posedge clk) begin
    if (reset) begin
        out <= seed;
    end else begin
        // Shift the register left by one bit
        out <= {out[6:0], feedback};
    end
end

assign out_L = out;
...

[stderr]
/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR
2 error(s) during elaboration.
*** These modules were missing:
        LFSR referenced 1 times.
***

[error]
None

[
  {
    "stage": "functional",
    "code": "functional.testbench_failed",
    "message": "/workspace/banchmarks/rtllm/13_rtllm_memory/task_04/tb.v:6: error: Unknown module type: LFSR\n2 error(s) during elaboration.\n*** These modules were missing:\n        LFSR referenced 1 times.\n***\n",
    "retryable": false,
    "details": {}
  }
]

{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": false,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}