I didn't see any mention of the '283, but perhaps I just missed it. I think he said something about a 555 circuit, so I'm assuming that is what he is intending to use for the clock. For now, I'm focusing only on the datapath and establishing what the control unit needs to do and then we can worry about making the control unit do it later.

Because I know what has to happen to make this approach work, I am assuming that the ADD is a command that tells the adder to either add the multiplicand or zero to the bits brought up from the register. I'm not sure if the adder he is using can implement that functionality directly or not, but there are simple ways to get around that if not.

 

Hi cmuraztaz

You Are Also There:
http://www.dutchforce.com/~eforum/index.php?showtopic=39567&st=0&pid=347099&#entry347099
http://www.electronicspoint.com/help-logic-circuit-serial-multiplier-t249870.html
http://www.edaboard.com/thread258878.html

Nobody Has Given A Satisfactory Answer For You.
May I Can Help?
First Of All I Need To See The Entire Document Where You Got Those Pictures That You Enclose Here.
It Probably Has Some Idea Of ​​How To Develop The Circuit.

The Picture Which Shows A Circuit Developed In ISIS Proteus Does Nothing Because The 4 BIT ADDER Is Only An Picture As Are The Pictures Called: SHIFT & ADD.

The Only Ones That Could Be Simulated In Proteus ISIS ARE Those Named: A7495 And B7495 But They Has Missing Their Control Signals: MODE, SL And SR.
Also Is Missing The Entire Circuitry Of The Module Called: "Shift And Add Control Logic."

So Let Me Review The Full Document To Help You.

Cordially.

 

Hi cmuraztaz,
I have developed a gate level circuit of to multiply 12 x 12 bits pure binary then converted to bcd for 7segmetn display, perhaps this is same with what your asking? The circuit is tested working using a digital simulator software. I know it will be alot easier to learn once you see an example as i experienced but without doing your assignment definitely you will not know how to explain the flow of logic and no way to learn, if still interested you may email me.

Cheers/

 

Sorry I must say let me know your email add and I can send part of the circuit.
Cheers/