Simple FIR filter using VHDL

I suggest to read the principles of FIR first of all. After that decide floating point or fixed point implementation. Than you can write a state machine for it with multiplication, summing and shifting. Altera provides core for FIR design with GUI interface and manual. I only use my own code for IIR code with small number of floating point coeffs, for other applications fir compiler is much more useful.