Hi, I am currently doing a project about Built-In Self Test and I used my BIST to test on a 8 bit full adder circuit, but the simulation turned out that my FA inputs are showing 1111 1111 instead of transferring test patterns from LFSR.

[BGuan1]

I suspect the problem is with the LFSR configurations, but I am not sure where, here I attached with the LFSR testbench, codes and the simulation result. SOS!!!!

[ShafiqY_Intel]

Hi BGuan1,

I may need your VHDL code file and TB file to duplicate it.

And also, can you explain step-by-step how you simulate? (I need to understanding on how you simulate the project)

Looking forward for your reply.

Thanks 😉