Сохранение состояния симуляции
$dumpfile (filename);
$dumpvars;
$dumpvars (level, scope);module dumpfile_tb;
reg a, b, c, d;
initial begin
repeat (5) begin
#1; c = b & a;
d = a | b;
end
end
initial begin
#2 a = 0; b = 1;
#2 a = 1'bz; b = 1'bz;
end
initial begin
$dumpfile("dump.vcd");
$dumpvars(0, dumpfile_tb);
#10 $finish;
end
endmodule
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