User guide

2-38
Modeling Your Design
$lsi_dumpports(test.u0.u1,"dump.out2");
end
top u0 (a);
endmodule
module top(a);
input a;
middle u1 (a);
endmodule
module middle(a);
input a;
wire b;
buf(b,a);
endmodule
By using the method in this example, the port a of instance u1 is
driven from the outside, and when $lsi_dumpports checks for the
drivers it reports a code of D as desired.
Signal Value/Strength Codes
The enhanced state character set is based on the TSSI Standard
Events Format State Character set with additional expansion to
include more unknown states. The supported character set is as
follows:
Testbench Level (only z drivers from the DUT)
Dlow
Uhigh
N unknown
Ztristate
d low (2 or more test fixture drivers active)
u high (2 or more test fixture drivers active)
DUT Level (only z drivers from the testbench)
Llow