VHDL-200X Fixed Point Divider

[Divyang M]

Hi,

I was wondering if the VHDL-200X fixed point divider is synthesizable
(by Altera Quartus)?

If so, what is the expected performance (speed / area) and is it
possible to pipeline the function for greater speed?

Thanks,
Divyang M

 

[David Bishop]

Hi,

I was wondering if the VHDL-200X fixed point divider is synthesizable
(by Altera Quartus)?

If so, what is the expected performance (speed / area) and is it
possible to pipeline the function for greater speed?

It depends. The fixed point divide uses a signed divide from
numeric_std. It works in Synplicity, but I don't know about quartus.

I just finished a Newton Raphson divide routine for fixed point that I
will post soon. That one takes about 8 multiplies.

 

[Divyang M]

Thanks David. I will look forward to the divide routine.

I still owe you the part of the code using the fixed_pkg that works
with Quartus 4.2 but not with Quartus 5.0 (from one of my earlier
posts). I will e-mail it as soon as I pack it into a user-friendly
fashion.

--Divyang M.