mirror of
https://github.com/steveicarus/iverilog.git
synced 2026-09-03 01:33:07 +02:00
Stephen Williams
cea237b407
By adding ivtest to the iverilog source tree, it is easier to keep the regression test synchronized with the source that is being tested. This should be especially helpful for PRs that add a new feature, and have a matching ivtest PR with the regression test for that feature.
227 lines
7.1 KiB
Verilog
227 lines
7.1 KiB
Verilog
module top;
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reg [24*8-1:0] str;
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real rval;
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reg [7:0] array [0:7];
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reg [7:0] array2 [8:15];
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reg [7:0] array3 [-1:7];
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integer idx, istr;
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task clear_array;
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for (idx = 0; idx < 8; idx = idx + 1) begin
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array[idx] = 0;
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array2[idx+8] = 0;
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end
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endtask
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initial begin
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// An invalid string.
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$readmemb(str, array);
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$readmemb(istr, array);
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// Check a valid string.
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str = "ivltests/readmemb.txt";
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$readmemb(str, array);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemb 1, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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// Check a string with a non-printing character.
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str[7:0] = 'd2;
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$readmemb(str, array);
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// This should load, but will print a warning about the real.
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rval = 0.0;
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clear_array;
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$readmemb("ivltests/readmemb.txt", array, rval);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemb 2, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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// This should load, but will print a warning about the real.
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rval = 7.0;
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clear_array;
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$readmemb("ivltests/readmemb.txt", array, 0, rval);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemb 3, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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// These should not load the array.
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clear_array;
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$readmemb("ivltests/readmemb.txt", array, -1, 7);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== 0) begin
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$display("Failed: for index %0d of readmemb 4, expected 0, got %0d",
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idx, array[idx]);
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end
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end
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$readmemb("ivltests/readmemb.txt", array2, 7, 15);
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for (idx = 8; idx < 16; idx = idx + 1) begin
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if (array2[idx] !== 0) begin
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$display("Failed: for index %0d of readmemb 5, expected 0, got %0d",
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idx, array2[idx]);
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end
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end
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$readmemb("ivltests/readmemb.txt", array, 0, 8);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== 0) begin
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$display("Failed: for index %0d of readmemb 6, expected 0, got %0d",
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idx, array[idx]);
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end
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end
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$readmemb("ivltests/readmemb.txt", array2, 8, 16);
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for (idx = 8; idx < 16; idx = idx + 1) begin
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if (array2[idx] !== 0) begin
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$display("Failed: for index %0d of readmemb 7, expected 0, got %0d",
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idx, array2[idx]);
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end
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end
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// Check that a warning is printed if we have the wrong number of values.
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clear_array;
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$readmemb("ivltests/readmemb.txt", array, 0, 6);
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for (idx = 0; idx < 7; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemb 8, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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if (array[7] !== 0) begin
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$display("Failed: for index 7 of readmemb 8, expected 0, got %0d",
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array[7]);
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end
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$readmemb("ivltests/readmemb.txt", array3, -1, 7);
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for (idx = -1; idx < 7; idx = idx + 1) begin
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if ($signed(array3[idx]) !== idx + 2) begin
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$display("Failed: for index %0d of readmemb 9, expected %0d, got %0d",
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idx, idx+2, array3[idx]);
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end
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end
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if (array3[7] !== 8'bx) begin
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$display("Failed: for index 7 of readmemb 9, expected 'dx, got %0d",
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array3[7]);
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end
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// Check what an invalid token returns.
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$readmemb("ivltests/readmem-error.txt", array);
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// An invalid string.
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str = 'bx;
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$readmemh(str, array);
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$readmemh(istr, array);
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// Check a valid string.
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str = "ivltests/readmemh.txt";
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$readmemh(str, array);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemh 1, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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// Check a string with a non-printing character.
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str[7:0] = 'd2;
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$readmemh(str, array);
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// This should load, but will print a warning about the real.
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rval = 0.0;
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clear_array;
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$readmemh("ivltests/readmemh.txt", array, rval);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemh 2, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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// This should load, but will print a warning about the real.
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rval = 7.0;
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clear_array;
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$readmemh("ivltests/readmemh.txt", array, 0, rval);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemh 3, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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// These should not load the array.
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clear_array;
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$readmemh("ivltests/readmemh.txt", array, -1, 7);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== 0) begin
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$display("Failed: for index %0d of readmemh 4, expected 0, got %0d",
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idx, array[idx]);
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end
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end
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$readmemh("ivltests/readmemh.txt", array2, 7, 15);
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for (idx = 8; idx < 16; idx = idx + 1) begin
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if (array2[idx] !== 0) begin
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$display("Failed: for index %0d of readmemh 5, expected 0, got %0d",
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idx, array2[idx]);
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end
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end
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$readmemh("ivltests/readmemh.txt", array, 0, 8);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (array[idx] !== 0) begin
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$display("Failed: for index %0d of readmemh 6, expected 0, got %0d",
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idx, array[idx]);
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end
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end
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$readmemh("ivltests/readmemh.txt", array2, 8, 16);
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for (idx = 8; idx < 16; idx = idx + 1) begin
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if (array2[idx] !== 0) begin
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$display("Failed: for index %0d of readmemh 7, expected 0, got %0d",
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idx, array2[idx]);
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end
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end
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// Check that a warning is printed if we have the wrong number of values.
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clear_array;
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$readmemh("ivltests/readmemh.txt", array, 0, 6);
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for (idx = 0; idx < 7; idx = idx + 1) begin
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if (array[idx] !== idx + 1) begin
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$display("Failed: for index %0d of readmemh 8, expected %0d, got %0d",
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idx, idx+1, array[idx]);
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end
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end
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if (array[7] !== 0) begin
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$display("Failed: for index 7 of readmemh 8, expected 0, got %0d",
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array[7]);
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end
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$readmemh("ivltests/readmemh.txt", array3, -1, 7);
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for (idx = -1; idx < 7; idx = idx + 1) begin
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if ($signed(array3[idx]) !== idx + 2) begin
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$display("Failed: for index %0d of readmemh 9, expected %0d, got %0d",
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idx, idx+2, array3[idx]);
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end
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end
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if (array3[7] !== 8'bx) begin
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$display("Failed: for index 7 of readmemh 9, expected 'dx, got %0d",
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array3[7]);
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end
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// Check what an invalid token returns.
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$readmemh("ivltests/readmem-error.txt", array);
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end
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endmodule
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