esp bug 8

innologic doesn't properly allow seed specification with $random.

$random(seed) should change the value of seed so that the next call to $random(seed) will deliver a different pseudo-random value.

Currently ESP (XV v2.2.0) doesn't set the seed, so the random call returns the same value each time:

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module top;

integer seed;
initial seed = 42;

initial begin
        $write("hey %h %h\n",$random(seed),seed);
        $write("hey %h %h\n",$random(seed),seed);
        $write("hey %h %h\n",$random(seed),seed);
        $write("hey %h %h\n",$random(seed),seed);
end

endmodule
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