tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.rg --files
Chunk ID: cccfc4 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 17 Output: srx_core/rtl/srx_top.sv srx_core/rtl/srx_pkg.sv srx_core/rtl/srx.sv
sed -n '1,220p' rtl/srx.sv
Chunk ID: c0bc49 Wall time: 0.0000 seconds Process exited with code 2 Original token count: 14 Output: sed: can't read rtl/srx.sv: No such file or directory
find . -maxdepth 3 -type f \( -name '*.sv' -o -name '*.v' -o -name 'Makefile' \) -print
Chunk ID: a180c0 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 19 Output: ./srx_core/rtl/srx.sv ./srx_core/rtl/srx_pkg.sv ./srx_core/rtl/srx_top.sv
sed -n '1,240p' srx_core/rtl/srx.sv
Chunk ID: aa364f
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 854
Output:
//==============================================================================
// srx.sv
//
// Asynchronous serial byte receiver for a line that idles high.
//
// ---------------------------------------------------------------------------
// >>> IMPLEMENTATION REQUIRED <<<
//
// The module ports, parameters and a set of state registers are provided. The
// frame FSM, the bit-period counter, the sampling datapath and the outputs are
// left as a TODO and currently drive constant zeros, so the receiver produces
// no useful result and the verifier FAILS.
//
// Implement the behaviour described in instruction.md. Do NOT change the
// module name, the port list, or the parameter list.
//
// iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
// function-call result) is a syntax error under `iverilog -g2012`. Index only
// named signals, and do any bit work that needs an intermediate value inside a
// `function automatic` using named locals.
// ---------------------------------------------------------------------------
//==============================================================================
`timescale 1ns/1ps
module srx #(
parameter BITLEN = 16,
parameter DW = 8
) (
input logic clk,
input logic rst_n, // asynchronous, active low
input logic rx, // serial input, idles high
input logic take, // downstream-consumed strobe
output logic [DW-1:0] data, // received byte (level held)
output logic valid, // 1-cycle good-frame strobe
output logic frame_err, // 1-cycle framing-error strobe
output logic busy // high from confirmed start to result
);
// ---------------------------------------------------------------------------
// State registers (provided). You may add more if your design needs them.
// ---------------------------------------------------------------------------
logic [1:0] state; // frame FSM state
integer cnt; // bit-period down-counter
integer bit_idx; // which bit is being sampled
logic [DW-1:0] shifter; // assembling byte
integer hi_run; // line-idle (high-run) counter
// ===========================================================================
// TODO: IMPLEMENT THE RECEIVER.
// * qualify a start, sample the data bits, drive valid/frame_err/data/busy
// and run the post-error resync window per the contract in instruction.md;
// * asynchronous active-low reset clears all state and outputs.
//
// The placeholder below keeps the module compilable but INCORRECT.
// ===========================================================================
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
state <= 2'd0;
cnt <= 0;
bit_idx <= 0;
shifter <= {DW{1'b0}};
hi_run <= 0;
end else begin
// TODO: replace with the real FSM + datapath.
state <= state;
cnt <= cnt;
bit_idx <= bit_idx;
shifter <= shifter;
hi_run <= hi_run;
end
end
// TODO: replace these placeholder outputs with the real ones.
assign data = {DW{1'b0}};
assign valid = 1'b0;
assign frame_err = 1'b0;
assign busy = 1'b0;
endmodule : srx
sed -n '1,220p' srx_core/rtl/srx_top.sv
Chunk ID: 0a2e28
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 312
Output:
//==============================================================================
// srx_top.sv
//
// Thin integration wrapper. The verification environment drives this wrapper so
// the instantiation wiring is exercised alongside the receiver itself. It
// instantiates srx with the project-default geometry from srx_pkg.
//
// DO NOT change this file.
//==============================================================================
`timescale 1ns/1ps
`include "srx_pkg.sv"
module srx_top (
input logic clk,
input logic rst_n,
input logic rx,
input logic take,
output logic [srx_pkg::DW-1:0] data,
output logic valid,
output logic frame_err,
output logic busy
);
// Bare instantiation: the receiver carries its own default geometry, so a
// submission needs no parameter override to elaborate correctly.
srx u_srx (
.clk (clk),
.rst_n (rst_n),
.rx (rx),
.take (take),
.data (data),
.valid (valid),
.frame_err (frame_err),
.busy (busy)
);
endmodule : srx_top
sed -n '1,200p' srx_core/rtl/srx_pkg.sv
Chunk ID: c68ba3 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 203 Output: //============================================================================== // srx_pkg.sv // // Shared geometry for the asynchronous serial byte receiver. The block carries // one bit-period counter, a small frame FSM, an LSB-first shift register and a // resync high-run counter. Parameters are declared without an explicit data // type for broad simulator compatibility (Icarus Verilog 11); they default to // integer constants, which is sufficient here. // // DO NOT change this file. //============================================================================== `ifndef SRX_PKG_SV `define SRX_PKG_SV package srx_pkg; localparam BITLEN = 16; // bit period in clk cycles (>= 8, even) localparam DW = 8; // data word width (one serial byte) endpackage : srx_pkg `endif // SRX_PKG_SV
find srx_core -maxdepth 3 -type f -print
Chunk ID: ca7313 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 17 Output: srx_core/rtl/srx.sv srx_core/rtl/srx_pkg.sv srx_core/rtl/srx_top.sv
*** Begin Patch
*** Update File: /work/srx_core/rtl/srx.sv
@@
logic [DW-1:0] shifter; // assembling byte
integer hi_run; // line-idle (high-run) counter
+ logic rx_d; // previous sampled rx value, for edge detect
+
+ localparam [1:0] ST_IDLE = 2'd0;
+ localparam [1:0] ST_START = 2'd1;
+ localparam [1:0] ST_DATA = 2'd2;
+ localparam [1:0] ST_STOP = 2'd3;
+
+ localparam integer HALF_BIT = BITLEN / 2;
@@
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
- state <= 2'd0;
- cnt <= 0;
- bit_idx <= 0;
- shifter <= {DW{1'b0}};
- hi_run <= 0;
+ state <= ST_IDLE;
+ cnt <= 0;
+ bit_idx <= 0;
+ shifter <= {DW{1'b0}};
+ hi_run <= 0;
+ rx_d <= 1'b1;
+ data <= {DW{1'b0}};
+ valid <= 1'b0;
+ frame_err <= 1'b0;
+ busy <= 1'b0;
end else begin
- // TODO: replace with the real FSM + datapath.
- state <= state;
- cnt <= cnt;
- bit_idx <= bit_idx;
- shifter <= shifter;
- hi_run <= hi_run;
+ rx_d <= rx;
+ valid <= 1'b0;
+ frame_err <= 1'b0;
+
+ case (state)
+ ST_IDLE: begin
+ cnt <= 0;
+ bit_idx <= 0;
+ hi_run <= 0;
+ busy <= 1'b0;
+
+ if (rx_d && !rx) begin
+ state <= ST_START;
+ cnt <= HALF_BIT - 1;
+ end
+ end
+
+ ST_START: begin
+ busy <= 1'b0;
+
+ if (cnt == 0) begin
+ if (!rx) begin
+ state <= ST_DATA;
+ cnt <= BITLEN - 1;
+ bit_idx <= 0;
+ shifter <= {DW{1'b0}};
+ busy <= 1'b1;
+ end else begin
+ state <= ST_IDLE;
+ end
+ end else begin
+ cnt <= cnt - 1;
+ end
+ end
+
+ ST_DATA: begin
+ busy <= 1'b1;
+
+ if (cnt == 0) begin
+ shifter[bit_idx] <= rx;
+ cnt <= BITLEN - 1;
+
+ if (bit_idx == DW - 1) begin
+ state <= ST_STOP;
+ end else begin
+ bit_idx <= bit_idx + 1;
+ end
+ end else begin
+ cnt <= cnt - 1;
+ end
+ end
+
+ ST_STOP: begin
+ busy <= 1'b1;
+
+ if (cnt == 0) begin
+ if (rx) begin
+ data <= shifter;
+ valid <= 1'b1;
+ state <= ST_IDLE;
+ end else begin
+ frame_err <= 1'b1;
+ state <= ST_IDLE;
+ hi_run <= 0;
+ end
+ end else begin
+ cnt <= cnt - 1;
+ end
+ end
+
+ default: begin
+ state <= ST_IDLE;
+ cnt <= 0;
+ bit_idx <= 0;
+ hi_run <= 0;
+ busy <= 1'b0;
+ end
+ endcase
+
+ if (state == ST_IDLE && frame_err) begin
+ state <= ST_STOP;
+ end
end
end
-
- // TODO: replace these placeholder outputs with the real ones.
- assign data = {DW{1'b0}};
- assign valid = 1'b0;
- assign frame_err = 1'b0;
- assign busy = 1'b0;
endmodule : srx
*** End Patch
Exit code: 0
Wall time: 0.2 seconds
Output:
Success. Updated the following files:
M /work/srx_core/rtl/srx.sv
*** Begin Patch
*** Update File: /work/srx_core/rtl/srx.sv
@@
- logic [1:0] state; // frame FSM state
+ logic [2:0] state; // frame FSM state
@@
- localparam [1:0] ST_IDLE = 2'd0;
- localparam [1:0] ST_START = 2'd1;
- localparam [1:0] ST_DATA = 2'd2;
- localparam [1:0] ST_STOP = 2'd3;
+ localparam [2:0] ST_IDLE = 3'd0;
+ localparam [2:0] ST_START = 3'd1;
+ localparam [2:0] ST_DATA = 3'd2;
+ localparam [2:0] ST_STOP = 3'd3;
+ localparam [2:0] ST_RESYNC = 3'd4;
@@
end else begin
frame_err <= 1'b1;
- state <= ST_IDLE;
+ state <= ST_RESYNC;
hi_run <= 0;
end
end else begin
cnt <= cnt - 1;
end
end
+
+ ST_RESYNC: begin
+ cnt <= 0;
+ bit_idx <= 0;
+ busy <= 1'b0;
+
+ if (rx) begin
+ if (hi_run == BITLEN - 1) begin
+ state <= ST_IDLE;
+ hi_run <= BITLEN;
+ end else begin
+ hi_run <= hi_run + 1;
+ end
+ end else begin
+ hi_run <= 0;
+ end
+ end
default: begin
state <= ST_IDLE;
cnt <= 0;
@@
busy <= 1'b0;
end
endcase
-
- if (state == ST_IDLE && frame_err) begin
- state <= ST_STOP;
- end
end
end
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /work/srx_core/rtl/srx.sv
sed -n '1,260p' srx_core/rtl/srx.sv
Chunk ID: c1d3c0
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1410
Output:
//==============================================================================
// srx.sv
//
// Asynchronous serial byte receiver for a line that idles high.
//
// ---------------------------------------------------------------------------
// >>> IMPLEMENTATION REQUIRED <<<
//
// The module ports, parameters and a set of state registers are provided. The
// frame FSM, the bit-period counter, the sampling datapath and the outputs are
// left as a TODO and currently drive constant zeros, so the receiver produces
// no useful result and the verifier FAILS.
//
// Implement the behaviour described in instruction.md. Do NOT change the
// module name, the port list, or the parameter list.
//
// iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
// function-call result) is a syntax error under `iverilog -g2012`. Index only
// named signals, and do any bit work that needs an intermediate value inside a
// `function automatic` using named locals.
// ---------------------------------------------------------------------------
//==============================================================================
`timescale 1ns/1ps
module srx #(
parameter BITLEN = 16,
parameter DW = 8
) (
input logic clk,
input logic rst_n, // asynchronous, active low
input logic rx, // serial input, idles high
input logic take, // downstream-consumed strobe
output logic [DW-1:0] data, // received byte (level held)
output logic valid, // 1-cycle good-frame strobe
output logic frame_err, // 1-cycle framing-error strobe
output logic busy // high from confirmed start to result
);
// ---------------------------------------------------------------------------
// State registers (provided). You may add more if your design needs them.
// ---------------------------------------------------------------------------
logic [2:0] state; // frame FSM state
integer cnt; // bit-period down-counter
integer bit_idx; // which bit is being sampled
logic [DW-1:0] shifter; // assembling byte
integer hi_run; // line-idle (high-run) counter
logic rx_d; // previous sampled rx value, for edge detect
localparam [2:0] ST_IDLE = 3'd0;
localparam [2:0] ST_START = 3'd1;
localparam [2:0] ST_DATA = 3'd2;
localparam [2:0] ST_STOP = 3'd3;
localparam [2:0] ST_RESYNC = 3'd4;
localparam integer HALF_BIT = BITLEN / 2;
// ===========================================================================
// TODO: IMPLEMENT THE RECEIVER.
// * qualify a start, sample the data bits, drive valid/frame_err/data/busy
// and run the post-error resync window per the contract in instruction.md;
// * asynchronous active-low reset clears all state and outputs.
//
// The placeholder below keeps the module compilable but INCORRECT.
// ===========================================================================
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
state <= ST_IDLE;
cnt <= 0;
bit_idx <= 0;
shifter <= {DW{1'b0}};
hi_run <= 0;
rx_d <= 1'b1;
data <= {DW{1'b0}};
valid <= 1'b0;
frame_err <= 1'b0;
busy <= 1'b0;
end else begin
rx_d <= rx;
valid <= 1'b0;
frame_err <= 1'b0;
case (state)
ST_IDLE: begin
cnt <= 0;
bit_idx <= 0;
hi_run <= 0;
busy <= 1'b0;
if (rx_d && !rx) begin
state <= ST_START;
cnt <= HALF_BIT - 1;
end
end
ST_START: begin
busy <= 1'b0;
if (cnt == 0) begin
if (!rx) begin
state <= ST_DATA;
cnt <= BITLEN - 1;
bit_idx <= 0;
shifter <= {DW{1'b0}};
busy <= 1'b1;
end else begin
state <= ST_IDLE;
end
end else begin
cnt <= cnt - 1;
end
end
ST_DATA: begin
busy <= 1'b1;
if (cnt == 0) begin
shifter[bit_idx] <= rx;
cnt <= BITLEN - 1;
if (bit_idx == DW - 1) begin
state <= ST_STOP;
end else begin
bit_idx <= bit_idx + 1;
end
end else begin
cnt <= cnt - 1;
end
end
ST_STOP: begin
busy <= 1'b1;
if (cnt == 0) begin
if (rx) begin
data <= shifter;
valid <= 1'b1;
state <= ST_IDLE;
end else begin
frame_err <= 1'b1;
state <= ST_RESYNC;
hi_run <= 0;
end
end else begin
cnt <= cnt - 1;
end
end
ST_RESYNC: begin
cnt <= 0;
bit_idx <= 0;
busy <= 1'b0;
if (rx) begin
if (hi_run == BITLEN - 1) begin
state <= ST_IDLE;
hi_run <= BITLEN;
end else begin
hi_run <= hi_run + 1;
end
end else begin
hi_run <= 0;
end
end
default: begin
state <= ST_IDLE;
cnt <= 0;
bit_idx <= 0;
hi_run <= 0;
busy <= 1'b0;
end
endcase
end
end
endmodule : srx
iverilog -g2012 -I srx_core/rtl -o /tmp/srx_elab.vvp srx_core/rtl/srx_pkg.sv srx_core/rtl/srx.sv srx_core/rtl/srx_top.sv
Chunk ID: 802a73 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
cat > /tmp/srx_tb.sv <<'EOF'
`timescale 1ns/1ps
module tb;
localparam integer BITLEN = 8;
logic clk = 0;
logic rst_n = 0;
logic rx = 1;
logic take = 0;
logic [7:0] data;
logic valid;
logic frame_err;
logic busy;
integer cyc = 0;
srx #(.BITLEN(BITLEN), .DW(8)) dut (
.clk(clk), .rst_n(rst_n), .rx(rx), .take(take),
.data(data), .valid(valid), .frame_err(frame_err), .busy(busy)
);
always #5 clk = ~clk;
always @(posedge clk) begin
cyc <= cyc + 1;
end
task tick;
begin
@(posedge clk);
#1;
end
endtask
task set_rx(input logic v);
begin
rx = v;
end
endtask
task send_byte(input [7:0] b, input logic stop_bit);
integer i;
begin
set_rx(0);
repeat (BITLEN) tick();
for (i = 0; i < 8; i = i + 1) begin
set_rx(b[i]);
repeat (BITLEN) tick();
end
set_rx(stop_bit);
repeat (BITLEN) tick();
set_rx(1);
end
endtask
initial begin
repeat (2) tick();
rst_n = 1;
repeat (2) tick();
// Short low glitch: no busy, no event.
set_rx(0);
repeat (3) tick();
set_rx(1);
repeat (8) tick();
if (busy || valid || frame_err) $fatal(1, "glitch produced output at cycle %0d", cyc);
fork
begin
send_byte(8'hA5, 1'b1);
end
begin
wait (valid === 1'b1);
if (data !== 8'hA5 || frame_err || !busy) $fatal(1, "bad valid event data=%h busy=%b fe=%b", data, busy, frame_err);
tick();
if (valid || frame_err || busy) $fatal(1, "event/busy did not clear after valid");
end
join
repeat (3) tick();
fork
begin
send_byte(8'h3c, 1'b0);
end
begin
wait (frame_err === 1'b1);
if (valid || data !== 8'hA5 || !busy) $fatal(1, "bad frame_err event data=%h valid=%b busy=%b", data, valid, busy);
tick();
if (frame_err || busy) $fatal(1, "frame_err/busy did not clear");
end
join
// A low before BITLEN continuous highs should be ignored and restart resync.
set_rx(1);
repeat (4) tick();
set_rx(0);
repeat (2) tick();
set_rx(1);
repeat (BITLEN) tick();
fork
begin
send_byte(8'h5a, 1'b1);
end
begin
wait (valid === 1'b1);
if (data !== 8'h5a) $fatal(1, "post-resync byte wrong data=%h", data);
end
join
$display("PASS");
$finish;
end
endmodule
EOF
iverilog -g2012 -I srx_core/rtl -o /tmp/srx_tb.vvp srx_core/rtl/srx.sv /tmp/srx_tb.sv && vvp /tmp/srx_tb.vvpChunk ID: 2f1f94 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 2 Output: PASS
git -C /work/srx_core diff -- rtl/srx.sv
Chunk ID: e394e7 Wall time: 0.0000 seconds Process exited with code 127 Original token count: 11 Output: /bin/bash: line 1: git: command not found
git -C /work/srx_core status --short
Chunk ID: b5162d Wall time: 0.0000 seconds Process exited with code 127 Original token count: 11 Output: /bin/bash: line 1: git: command not found
*** Begin Patch *** Update File: /work/srx_core/rtl/srx.sv @@ -// >>> IMPLEMENTATION REQUIRED <<< -// -// The module ports, parameters and a set of state registers are provided. The -// frame FSM, the bit-period counter, the sampling datapath and the outputs are -// left as a TODO and currently drive constant zeros, so the receiver produces -// no useful result and the verifier FAILS. -// -// Implement the behaviour described in instruction.md. Do NOT change the -// module name, the port list, or the parameter list. +// Receiver implementation for the single-wire byte framing described in +// instruction.md. Do NOT change the module name, the port list, or the +// parameter list. @@ - // =========================================================================== - // TODO: IMPLEMENT THE RECEIVER. - // * qualify a start, sample the data bits, drive valid/frame_err/data/busy - // and run the post-error resync window per the contract in instruction.md; - // * asynchronous active-low reset clears all state and outputs. - // - // The placeholder below keeps the module compilable but INCORRECT. - // =========================================================================== + // =========================================================================== + // Qualify a start at the start-bit centre, then sample each following bit + // centre. After a framing error, wait for a full high bit time before + // accepting another falling edge. + // =========================================================================== *** End Patch Exit code: 0 Wall time: 0 seconds Output: Success. Updated the following files: M /work/srx_core/rtl/srx.sv
iverilog -g2012 -I srx_core/rtl -o /tmp/srx_elab.vvp srx_core/rtl/srx_pkg.sv srx_core/rtl/srx.sv srx_core/rtl/srx_top.sv
Chunk ID: 469487 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
iverilog -g2012 -I srx_core/rtl -o /tmp/srx_tb.vvp srx_core/rtl/srx.sv /tmp/srx_tb.sv && vvp /tmp/srx_tb.vvp
Chunk ID: fa9855 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 2 Output: PASS
sed -n '1,240p' srx_core/rtl/srx.sv
Chunk ID: be7c30
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1299
Output:
//==============================================================================
// srx.sv
//
// Asynchronous serial byte receiver for a line that idles high.
//
// ---------------------------------------------------------------------------
// Receiver implementation for the single-wire byte framing described in
// instruction.md. Do NOT change the module name, the port list, or the
// parameter list.
//
// iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
// function-call result) is a syntax error under `iverilog -g2012`. Index only
// named signals, and do any bit work that needs an intermediate value inside a
// `function automatic` using named locals.
// ---------------------------------------------------------------------------
//==============================================================================
`timescale 1ns/1ps
module srx #(
parameter BITLEN = 16,
parameter DW = 8
) (
input logic clk,
input logic rst_n, // asynchronous, active low
input logic rx, // serial input, idles high
input logic take, // downstream-consumed strobe
output logic [DW-1:0] data, // received byte (level held)
output logic valid, // 1-cycle good-frame strobe
output logic frame_err, // 1-cycle framing-error strobe
output logic busy // high from confirmed start to result
);
// ---------------------------------------------------------------------------
// State registers (provided). You may add more if your design needs them.
// ---------------------------------------------------------------------------
logic [2:0] state; // frame FSM state
integer cnt; // bit-period down-counter
integer bit_idx; // which bit is being sampled
logic [DW-1:0] shifter; // assembling byte
integer hi_run; // line-idle (high-run) counter
logic rx_d; // previous sampled rx value, for edge detect
localparam [2:0] ST_IDLE = 3'd0;
localparam [2:0] ST_START = 3'd1;
localparam [2:0] ST_DATA = 3'd2;
localparam [2:0] ST_STOP = 3'd3;
localparam [2:0] ST_RESYNC = 3'd4;
localparam integer HALF_BIT = BITLEN / 2;
// ===========================================================================
// Qualify a start at the start-bit centre, then sample each following bit
// centre. After a framing error, wait for a full high bit time before
// accepting another falling edge.
// ===========================================================================
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
state <= ST_IDLE;
cnt <= 0;
bit_idx <= 0;
shifter <= {DW{1'b0}};
hi_run <= 0;
rx_d <= 1'b1;
data <= {DW{1'b0}};
valid <= 1'b0;
frame_err <= 1'b0;
busy <= 1'b0;
end else begin
rx_d <= rx;
valid <= 1'b0;
frame_err <= 1'b0;
case (state)
ST_IDLE: begin
cnt <= 0;
bit_idx <= 0;
hi_run <= 0;
busy <= 1'b0;
if (rx_d && !rx) begin
state <= ST_START;
cnt <= HALF_BIT - 1;
end
end
ST_START: begin
busy <= 1'b0;
if (cnt == 0) begin
if (!rx) begin
state <= ST_DATA;
cnt <= BITLEN - 1;
bit_idx <= 0;
shifter <= {DW{1'b0}};
busy <= 1'b1;
end else begin
state <= ST_IDLE;
end
end else begin
cnt <= cnt - 1;
end
end
ST_DATA: begin
busy <= 1'b1;
if (cnt == 0) begin
shifter[bit_idx] <= rx;
cnt <= BITLEN - 1;
if (bit_idx == DW - 1) begin
state <= ST_STOP;
end else begin
bit_idx <= bit_idx + 1;
end
end else begin
cnt <= cnt - 1;
end
end
ST_STOP: begin
busy <= 1'b1;
if (cnt == 0) begin
if (rx) begin
data <= shifter;
valid <= 1'b1;
state <= ST_IDLE;
end else begin
frame_err <= 1'b1;
state <= ST_RESYNC;
hi_run <= 0;
end
end else begin
cnt <= cnt - 1;
end
end
ST_RESYNC: begin
cnt <= 0;
bit_idx <= 0;
busy <= 1'b0;
if (rx) begin
if (hi_run == BITLEN - 1) begin
state <= ST_IDLE;
hi_run <= BITLEN;
end else begin
hi_run <= hi_run + 1;
end
end else begin
hi_run <= 0;
end
end
default: begin
state <= ST_IDLE;
cnt <= 0;
bit_idx <= 0;
hi_run <= 0;
busy <= 1'b0;
end
endcase
end
end
endmodule : srx
No file changes, the agent left the workspace untouched.
test.sh: compiling with iverilog... ----- iverilog output ----- --------------------------- test.sh: running simulation with vvp... ----- simulation output ----- ERROR busy16 mismatch @t=1606000 got=1 exp=0 ERROR busy16 mismatch @t=3476000 got=1 exp=0 ERROR busy16 mismatch @t=5346000 got=1 exp=0 ERROR busy16 mismatch @t=7216000 got=1 exp=0 ERROR busy16 mismatch @t=10426000 got=1 exp=0 ERROR busy16 mismatch @t=12626000 got=1 exp=0 ERROR busy16 mismatch @t=14496000 got=1 exp=0 ERROR busy16 mismatch @t=18196000 got=1 exp=0 ERROR busy16 mismatch @t=20066000 got=1 exp=0 ERROR busy16 mismatch @t=21686000 got=1 exp=0 ERROR busy16 mismatch @t=23556000 got=1 exp=0 ERROR busy16 mismatch @t=25876000 got=1 exp=0 ERROR busy8 mismatch @t=27266000 got=1 exp=0 ERROR busy16 mismatch @t=28896000 got=1 exp=0 ERROR busy8 mismatch @t=29986000 got=1 exp=0 ERROR busy16 mismatch @t=31656000 got=1 exp=0 ERROR busy8 mismatch @t=32596000 got=1 exp=0 ERROR busy8 mismatch @t=33746000 got=1 exp=0 ERROR busy16 mismatch @t=35406000 got=1 exp=0 ERROR busy8 mismatch @t=36336000 got=1 exp=0 INFO samples=56542 dmiss=0 vmiss=0 femiss=0 bymiss=196 SAMPLES=56542 TEST FAILED total_err=196 samples=56542 ----------------------------- test.sh: FAIL - failure marker present in simulation output
Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_246ab1d177c84493. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.
Trial trial_246ab1d177c84493 · verifier authoritative; classifier explanatory.