mirror of
https://github.com/steveicarus/iverilog.git
synced 2026-09-03 05:43:53 +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.
218 lines
7.5 KiB
Verilog
218 lines
7.5 KiB
Verilog
module top;
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reg [20*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] check [0:7];
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integer idx, istr;
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initial begin
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for (idx = 0; idx < 8; idx = idx + 1) array[idx] = idx + 1;
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for (idx = 8; idx < 16; idx = idx + 1) array2[idx] = 0;
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// An invalid string.
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$writememb(str, array);
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$writememb(istr, array);
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// Check a valid string.
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str = "work/writemem.txt";
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb(str, array);
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$readmemb(str, check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 1, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// Check a string with a non-printing character.
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str[7:0] = 'd2;
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$writememb(str, array);
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// This should write, but will print a warning about the real.
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rval = 0.0;
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb("work/writemem.txt", array, rval);
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$readmemb("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 2, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// This should write, but will print a warning about the real.
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rval = 7.0;
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb("work/writemem.txt", array, 0, rval);
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$readmemb("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 3, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// These should not write the array.
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb("work/writemem.txt", check, -1, 7);
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$readmemb("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 4, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb("work/writemem.txt", array2, 7, 15);
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$readmemb("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 5, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb("work/writemem.txt", check, 0, 8);
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$readmemb("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 6, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb("work/writemem.txt", array2, 8, 16);
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$readmemb("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 7, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// Check that we can write part of an array.
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememb("work/writemem.txt", array, 0, 6);
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$readmemb("work/writemem.txt", check, 0, 6);
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for (idx = 0; idx < 7; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememb 8, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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if (check[7] !== 0) begin
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$display("Failed: for index 7 of writememb 8, expected 0, got %0d",
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check[7]);
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end
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// An invalid string.
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str = 'bx;
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$writememh(str, array);
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$writememh(istr, array);
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// Check a valid string.
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str = "work/writemem.txt";
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh(str, array);
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$readmemh(str, check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 1, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// Check a string with a non-printing character.
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str[7:0] = 'd2;
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$writememh(str, array);
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// This should write, but will print a warning about the real.
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rval = 0.0;
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh("work/writemem.txt", array, rval);
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$readmemh("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 2, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// This should write, but will print a warning about the real.
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rval = 7.0;
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh("work/writemem.txt", array, 0, rval);
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$readmemh("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 3, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// These should not write the array.
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh("work/writemem.txt", check, -1, 7);
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$readmemh("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 4, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh("work/writemem.txt", array2, 7, 15);
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$readmemh("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 5, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh("work/writemem.txt", check, 0, 8);
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$readmemh("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 6, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh("work/writemem.txt", array2, 8, 16);
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$readmemh("work/writemem.txt", check);
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for (idx = 0; idx < 8; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 7, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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// Check that we can write part of an array.
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for (idx = 0; idx < 8; idx = idx + 1) check[idx] = 0;
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$writememh("work/writemem.txt", array, 0, 6);
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$readmemh("work/writemem.txt", check, 0, 6);
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for (idx = 0; idx < 7; idx = idx + 1) begin
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if (check[idx] !== idx + 1) begin
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$display("Failed: for index %0d of writememh 8, expected %0d, got %0d",
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idx, idx+1, check[idx]);
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end
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end
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if (check[7] !== 0) begin
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$display("Failed: for index 7 of writememh 8, expected 0, got %0d",
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check[7]);
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end
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end
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endmodule
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