Multiple assign statements targeting the same wire, Computer Engineering

Assignment Help:

What logic is inferred when there are multiple assign statements targeting the same wire?

It's illegal to specify multiple assign statements to the same wire in a synthesizable code that will become  an  output  port  of  module.  Synthesis  tools  give  a  syntax  error  that  a  net  is  being driven by more than one source.

Illegal Code

Wire temp;

Assign temp = in1 & in2;

Assign temp = in3 & in4;

However, it is legal to drive a three-state wire by multiple assign statements.

Legal code

Wire temp;

Assign temp = enable1? (In1 & in2): 1'bz;

Assign temp = enable2? (In3 & in4): 1'bz

 


Related Discussions:- Multiple assign statements targeting the same wire

Microprocessors Instruction sets, Write a program to mask bits D3D2D1D0 and...

Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to invert bits D7D6 of the AX register.

Explain time switching, Explain Time Switching. Time Switches: The ...

Explain Time Switching. Time Switches: The principle of a time switch is demonstrated in figure. This connects an incoming n channel PCM highway to an outgoing n channel PC

Project cost, I need help in my M.Sc project ,but im wondering how the cost...

I need help in my M.Sc project ,but im wondering how the cost is calculated

Show the simple arithmetic application, Q. Show the Simple Arithmetic Appli...

Q. Show the Simple Arithmetic Application? The question is why can't we simply employ XCHG instruction with 2 memory variables as operand? To answer the question let's look int

How the at-user command serves mainly in lists, How the at-user command ser...

How the at-user command serves mainly in lists? The AT USER-COMMAND event serves mostly to handle own function codes.  In this case, you should make an individual interface wit

What is an event handler, An event handler is a part of a computer program ...

An event handler is a part of a computer program formed to tell the program how to act in response to a definite event.

What is the meaning of aliasing, a. What is the meaning of aliasing? What a...

a. What is the meaning of aliasing? What are its drawbacks? Describe a method to remove aliasing, using post filtering. b. How can you copy a Pixmap from one place to another

Positive logic nand gate is equivalent to negative logic nor, Show that a p...

Show that a positive logic NAND gate is equivalent to negative logic NOR gate. Ans:  Positive logic denotes True or 1 with a high voltage and False or 0 with a low volt

Carry save addition and generated and propagate function, Explain carry sav...

Explain carry save addition (CSA) process. Ans: Instead of allowing the carries ripple along the rows, they can be saved and then introduced into the next roe at the right wei

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd