To divide by a number other than 2, you can multiply by its reciprocal to an arbitrary precision. For example, to divide by 3, you can multiply by 21845, then shift the result right by 16 bits, which divides by 65536. 21845/65536 is about 1/3. For a more precise result, use more bits!

Appreciate the elaboration. When I took a digital design course in college, my professor didn't explain the SIgned and Unsigned stuff properly. Then again, I wasn't aware of FPGAs until my last semester in college. smh.

In the beginning, isn't what was explained as the two's compliment of 1 actually -1. This is going by another simple way to explain 2's compliment, which is to say that every bit is the weight of a power of 2, except for the most significant bit, which has a weight of the NEGATIVE of its respective power of 2.

You learn to add in 1st grade....many start in Kindergarten. I just ordered the Go Board - look forward to the lessons. Already watched most of the videos!

Excellent explanation. I just wondered how to divide with anything that 2,4,8 and so on. You gave me the coolest answer I ever heard - complicated. That is so true. Thanks. EDIT: Typo: should be ...anything than 2,4,8... that makes sentence different.

Awesome video! Definitely learned a lot from this, thank you.

Hey Dear Russel , I'm one of the many people who used your tutorials on the GoBoard to learn a few things and take the first steps into the FPGA world . First I wanted to thank u for all the great help and guidance that actually helped me get my first Job related to FPGA development . I've been working on a more complex development board for myself with some more components like HDMI , MicroController and . . . But I can't figure out how to make a programmer on board using the FTDI chip like u did on the GoBoard in a way i can use it both for Serial interface and Programming the FPGA . I Would really appreciate it if u could give me a hand on this since I have almost no idea how to make one . Best Regards

Thanks for your work, man! Keep it up! Really keeps me motivated to spend my free time tinkering with FPGAs. By the way do you plan on covering fixed point arithmetic on an FPGA?

Hello, awesome video honestly, can you make a video with Time to digital convertor explained and ring oscillator explained

I'd like to know what happens when you assign an output as X in a case for don't care values

Very well explained! Thanks alot.

Great video, helped me a lot!

Division is simple. division is subtraction with right shift divisor: 135/10=13 (%=5) -->> 135-("0"*'160')-("1"*'80')-("1"*'40')-("0"*'20')-("1"*'10') -->> Result="01101b"=13 Remainder=5

How to perform fixed-point addition in verilog?

Speaking of integer division, it is slow on CPUs as well. When the divisor is known at design time, what compilers tend to do instead of dividing is a trick involving shifting, multiplying by some constant and then shifting again. The constant and shift amounts can be chosen in such a way as to get the same result as if division had been performed. Does anyone do this on FPGAs?

Veeeeeeeeeeeeeeerrrrrrrrrrrrrrrrrrrry nice video for VHDL，thanks ，man。

Regarding how one should use the verilog 'signed' and 'unsigned' keyword whenever comparing or doing math operations for synthesis (not simulation).. does the sign get extended automatically or does one need to do it manually? For example, would : reg signed [7:0] var; var

after addding 1 how did it go to 1010?

Hi! Thanks for your work! How to implement multiplication on FPGA when there is an arbitrary number of inputs? Is there a way to do so?

Is your Go Board still available for purchase? I am unable to reach the sales page.. Thanks!

I have a question: typically when multiplying, the result will have a width equals to the total sum of the width of both factors. However i think that in signed multiplication it always end up with 1 extra bit which is the extended sign bit. Can we trunkcate this so the result could get better resource utilization?

Is there is way to solve polynomial functions using Verilog on a FPGA?

u dont have to use 2s complement, but i probably will. do it however u wish.

But all that is like high level VHDL, what happents in real life? Behind the plus sign vhdl creates all the full adders or what?

I dont think I have ever seen such a small whiteboard lol

Hi, I've had a signed number problem alot lately. Sometimes either the compiler or (?) flips my number assignment, that is, for example, I declare a number as a signed number, but it treats it as an unsigned number, and vise versa. This problem comes and goes, so it's some sort of instability, but I can't seem to put a finger on it, and don't know how to fix it. Any encounter this before? Any help would be appreciated!

Why do you depend to continue making videos on the sales number of your board? Don't you have fun doing these videos in your free time to educate your viewers?