Hi, all. I am working on a variant system where I am running two identical modules under the testbench. The only difference between these two modules is some unique data in the memory.
module Top();
MAGIC_AND c1(A, B, O, O_diff);
endmodule
module Testbench();
Top dut();
Top variant();
endmodule
module MAGIC_AND(
input A,
input B,
output O,
output O_diff
);
assign O = A & B;
if (under variant)
O_diff = 0;
else // under dut
O_diff = O ^ Testbench.variant.c1.O;
endmodule
I am planning to create a MAGIC cell that can gather the value of dut.c1.O and variant.c1.O, and produce an alert if they are not the same. However, I am facing a challenge since I am working on a netlist with thousands of cells. I am wondering if there is any way to access the same hierarchy cell in another module.
Thanks.