Multiplication on floating point format

Altera have megafunctions for doing floating point arithmatic, so there is no conversion. There is a floating to fixed point megafunction too if you want to do fixed point instead.

Quartus uses IEEE standard float format, as described in detail in the altfp_xxx Megafunctions manual.

Here is the link:

Thanks everyone.:o

floating point is never simple. The floating point mega functions are quite large and have a few clocks of latency. But a couple inside a cyclone 2 should be fine.

I also using NIOS II to boot in the program into DE2 Board. can it work?

Yes - you can do a lot with FPGAs.

Tricky, I am new with MegaFunction. What is the different between the VHDL coding in Megafunction and normal VHDL that I usually use in the lectures? How should i start my VHDL of floating point multiplication program?

A megafunction is a block of Altera IP. Most of it is written in VHDL and/or verilog, so you can simulate it alongside your own bits of HDL. You can create megafunction blocks via the Megawizard in the tools menu. The megawizard will create VHDL files with all of the setup parameters already specified (or if you are more confident, instantiate them straight from your VHDL - you can get all the parameters in the megafunction help section). These can be instantiated in your VHDL. You just treat them as a black box.

I still can't get it. is it first need to create a new custom megafunction variation?