FIR by megafunction or write fir by myself?

Hi,

I'm new in VHDL, I'm intend to design a filtr typ FIR. I have used Megafunction in Quartus.

But it supports only 37 taps for each fir. I need about twice taps of that.

I'm thinking about connect 2 filtrs serial, or design one filtr by myself using Matlab to canculate coeficients and write it in vhdl.

By your experiments, can you give me some advice, should I write it myself or using 2 megafunction filters. Or any another suggestion.

Which of those is most optimal for speed, resource...:confused: :confused: :confused:

Thank you!!!