Verilog Help
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
You are currently reading a thread in /g/ - Technology
You are currently reading a thread in /g/ - Technology
I have been bashing my head against the wall for like 5 hours trying to get this simple Verilog circuit to work.
I know this is low chance, but would anyone be able to help me?
It is pretty simple, 4 inputs into 4 AND gates and then the 4 AND gets input into an OR gate.
I get f = 0 no matter what input I give a, b, x, y.module exp3veri(x, y, a, b, f);
input x;
input y;
input a;
input b;
output f;
wire nXAB = (~x & a & b);
wire YAnB = (y & a & ~b);
wire YnAB = (y & ~a & b);
wire XnAnB = (x & ~a & ~b);
assign f = (nXAB | YAnB | YnAB | XnAnB);
endmodule
module exp3veri(x, y, a, b, f);
input x, y, a, b;
output f;
wire nXAB;
wire YAnB;
wire YnAB;
wire XnAnB;
assign nXAB = (~x & a & b);
assign YAnB = (y & a & ~b);
assign YnAB = (y & ~a & b);
assign XnAnB = (x & ~a & ~b);
assign f = (nXAB | YAnB | YnAB | XnAnB);
endmodule
If this doesn't work, your logic is incorrect.
>>54866780
wow you are right. i guess my logic is wrong. fuck i just been wasting like 5 hours cuase of this. fuck me in the ass.
>>54866942
Should've used VHDL
>>54866780
>>54866942
nope. i am just an idiot who doesn't understand how Xilinx works. I was not actually running the simulation. just going off the test bench where the value of f doesn't change.
holy fuck fuck me.
>>54866967
It takes awhile to get used to the weird tools in the FPGA world. No worries. At least you figured it out.
>>54866989
thanks for the support
thanks for the help if there is more than one person here. i appreciate it.
>tfw 3 weeks working on a real-time image thresholder
>finally finished
Feels good desu
>>54866212
You know you are suppose to describe the logic on a higher level than basic bitwise arithmetic with things like verilog/vhdl right?
>>54866212
>I have been bashing my head against the wall for like 5 hours trying to get this simple Verilog circuit to work.
http://danluu.com/why-hardware-development-is-hard/
