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Altera_Forum's avatar
Altera_Forum
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13 years ago

simulate a vhdl code of a function with ISE

I've started to learn vhdl recently.i write a vhdl code to detemine the arith statement,but it dosen't work.actually when i simulate it;the output dose not change and it remains 0.0; i don't k...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I'm nut even sure how this code can run in a simulator without any errors but you should maybe check your algorithm first. In this line

sum:=sum + x(k)*y(n-k);
(n-k) can take a lot of values outside of the range 0 to 1, and that should cause an error in the simulator real quick.

You do realize that this code isn't synthesizable on real hardware, don't you?